dcdc selection guide-e

DC/DC Converters Selection Guide
Rev. 6.1
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Table of Contents
ROHM Website
Secondary Side
Primary Side
2
Product Pickup
Buck Converter (Integrated Switch FET)
3
Buck Controller (External Switch FET)
15
Isolated DC/DC Power Supply
19
Boost Converter
21
AC
DC
AC/DC
Transformer
Switching Regulator
DC/DC
PFC
Wireless power supply
Isolated DC/DC converter
Voltage Detector
Linear Regulator
LDO
High‐side Switch
Power
MOSFET
Lineup
Power Supply Block Schematic Chart
Single Output Buck Converter (Integrated Switch FET)
22
Dual Output Buck Converter (Integrated Switch FET)
26
Buck Controller (External Switch FET)
26
Boost/Buck‐boost/SEPIC and Inverting
27
Product List and Selection Guide
Buck Converter (Integrated Switch FET) 28
Boost/Buck‐boost/SEPIC and Inverting Converters
34
Controller (External Switch FET)
35
Power MOSFET
36
Isolated DC/DC Power Supply
37
Notice
38
DC/DC Converters Selection Guide
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ROHM's product lineup covers the entire area
of power supplies. This selection guide features
DC/DC switching regulators, isolated DC/DC
converters and power MOSFETs.
Pages 3 to 21 introduce select products with
specific characteristics.
Page 3 shows characteristics of the buck
converter BD9x families.
Pages 5 to 13 introduce buck converters with
specific characteristics by input voltage range.
Page 14 shows the buck type switching
regulators that operate at a maximum 6 MHz.
The chip-sized package and coil of low inductor
value allow for a miniature power supply
configuration that is especially suited for
portable equipment.
Pages 15 to 18 show controller ICs that allow
for power supply configurations for high
current output by attaching a MOSFET to the
IC external. Page 15 presents an application
example that delivers both high-speed load
response and high current output in the power
supply for FPGA. Page 16 explains ROHM’s
proprietary H3RegTM high-speed transient
response technology that is used for the
controller ICs.
Page 17 introduces controllers with a 60V
rating and high current applications using ICs.
Page 19 features isolated DC/DC switching
regulators that assuredly improve reliability as
they do not require an optocoupler.
Page 21 shows boost DC/DC switching
regulators that are ideal for stabilizing power
supplies to portable equipment that run on a
one-cell lithium ion battery.
Pages 22 to 27 show lineup tables, and
Page 28 and following pages show product lists.
You can select ICs based on representative
values and functions.
Before using a ROHM IC, be sure to check its
setting values, data and functions against the
latest data sheet.
1
ROHM Website
For ROHM’s power supply IC lineup, visit
the following ROHM website.
http://www.rohm.com
ROHM provides design and technical data
and tools such as data sheets, application
notes, technical notes, reference designs and
evaluation boards to assist developers.
DC/DC Converters
MOSFETs
http://micro.rohm.com/en/techweb/
http://deviceplus.com/
Before using a ROHM IC, be sure to check its setting values, data and functions against the latest data sheet.
2
DC/DC Converters Selection Guide
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Pickup
Buck Converter (Integrated Switch FET)
BD9x Family System Diagram
24V
Input power rail voltage
12V
5.0V
3.3V
Current mode control
BD9Dxxx
Series
BD9Exxx
Series
BD9B100 1A *1
BD9B200 2A *1
BD9B300 3A *1
BD9B400 4A *1
BD9B500 5A *1
BD9B600 6A *1
BD9C301 3A
BD9C401 4A
BD9C501 5A
BD9C601 6A
BD9D320 3A
BD9D321 3A *1
BD9E100 1.0A 1MHz
BD9E101 1.0A 570kHz
BD9E102 1.0A 570kHz *1
BD9E300 2.5A 1MHz
BD9E301 2.5A 570kHz
BD9E302 3.0A 570kHz *1
BD9E303 3.0A 300kHz
On‐time control
Current mode control
Pin compatible
BD9Cxxx
Series
Pin compatible
BD9A100 1A *1
BD9A300 3A *1
BD9A400 4A *1
BD9A600 6A *1
BD9Bxxx
Series
Pin compatible
*2
Pin compatible
Pin compatible
Pin compatible
BD9Axxx
Series
Current mode control
On‐time control
*1: Automatic switching from PWM to PFM at light load
*2: CRs with a single pin must be replaced by a jumper resistor.
The above diagram shows the buck
The BD9Bxxx Series, in the other green
The BD9Cxxx Series in the blue group
light-load high efficiency modes. ICs in
converter BD9x Family systems. These
group, adopts on-time control and
supports an input power rail voltage of
this series are pin-compatible, which
lists are color-coded and ICs of the same
supports output currents of 1A, 2A, 3A,
12V. As a secondary power supply, it is
enables easy replacement according to
color are pin-compatible. The BD9Axxx
4A, 5A and 6A. This series offers faster
available with a 5V input. This series
efficiency requirements under light load.
Series in the green group supports input
load response characteristics and higher
adopts current mode control and supports
The BD9Exxx Series in the red group
power rail voltages of 3.3V and 5.0V.
efficiency at light load than the BD9Axxx
output current of 3A, 4A, 5A and 6A. ICs
supports input power rail voltages of 12V
This series adopts current mode control,
Series. ICs of the BD9Bxxx Series are
in this series are pin-compatible.
and 24V. This series adopts current mode
supports output currents of 1A, 3A, 4A
also pin-compatible. Moreover, ICs are
The BD9Dxxx Series in the orange group
control and supports output currents of
and 6A, and features high-speed load
pin-compatible between the BD9Axxx
supports an input power rail voltage of
1A, 2.5A and 3A and switching
response characteristics. Since ICs of this
Series and BD9Bxxx Series, which
12V. As a secondary power supply, it is
frequencies of 300 kHz, 570 kHz and
series are pin-compatible, replacement is
enables easy replacement in the event of
available with a 5V input. For the output
1MHz. ICs of 1A and 3A include models
easy even when the current design value
urgent design changes, such as in a case
current, only a 3A type is available, but it
that ensure high efficiency under light
changes.
where a faster load response is required.
includes two IC models with/without the
load.
DC/DC Converters Selection Guide
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3
BD9x Family Lineup
○ ‐ Current Mode Control
◎ ‐ On‐time Control
▼ ‐ Light Load Mode
△ ‐ Nonsynchronous
6.0
ROHM’s single output buck DC/DC converters
provide a power supply solution that satisfies your
specification requirements based on a matrix of input
voltage and output current. In the product name of
BD9x Family, the numeric value “9” following “BD”
represents the “buck” topology, the subsequent
alphabet represents the maximum rated input voltage
and the subsequent numeric value represents the
output current.
30V
◎ BD9F800MUX
8.0
Maximum Rating
○ BD9C601EFJ
20V
○ BD9C501EFJ
20V
○ BD9C401EFJ
20V
◎ BD9B600MUV ▼
○ BD9A600MUV ▼
5.0
◎ BD9B500MUV ▼
◎ BD9B400MUV ▼
4.0
Part No. Description
Output Current (A)
○ BD9A400MUV ▼
3.0
◎ BD9D321EFJ ▼
20V
◎ BD9D320EFJ
20V
○ BD9C301FJ / BD9C301FJ‐LB
20V
SW=570kHz
◎ BD9B300MUV / BD9B301MUV‐LB ▼
B
○ BD9G341AEFJ △
9
Topology
9 : Buck
8 : Boost, Buck‐Boost,
Inverting
○ BD9E301EFJ‐LB
40V
○ BD9E300EFJ‐LB
40V
○ BD9E151NUX △
30V
○ BD9E102FJ ▼
30V
○ BD9E101FJ‐LB
40V
Maximum Rated Input Voltage and Control Mode
A : ≤ 7V Current Mode
B : ≤ 7V On‐time
C : ≤ 20V Current Mode
D : ≤ 20V On‐time
E : ≤ 40V Current Mode
F : ≤ 40V On‐time
G : ≤ 80V Current Mode
○ BD9E100FJ‐LB
40V
Note: There are some part numbers that do not conform with this rule ○ BD9G101G △
45V
SW=570kHz
◎ BD9B100MUV ▼
SW=1MHz
○ BD9A100MUV / BD9A101MUV‐LB ▼
0.5
3.3
5.0
Serial No.
00, 01, 02, ･･･
40V
SW=570kHz
1.0
0
○ BD9E303EFJ‐LB
◎ BD9B200MUV ▼
1.2
0
30V
SW=1MHz
2.0
3
○ BD9E302EFJ ▼
SW=570kHz
2.5
A
80V
SW=300kHz
○ BD9A300MUV / BD9A301MUV‐LB ▼
D
12
24
Output Current
1 : ≤ 1A 2 : ≤ 2A
3 : ≤ 3A
4 : ≤ 4A
・
・
A：≤ 10A
・
Z : Controller
48
Input Power Rail Voltage (V)
4
DC/DC Converters Selection Guide
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Pickup
Buck Converter (Integrated Switch FET)
3.3V/5V Power Rail Input
BD9B300MUV light‐load automatic switching mode
Power Supply Solution for Consumer Equipment
BD9A300MUV light‐load automatic switching mode
The BD9A100MUV, BD9A300MUV, BD9A600MUV and BD9B300MUV generate a low voltage of about 1.8 V from power
supplies of 5V or 3.3V.
5V or 3.3V
PC/Tablet board
BD9A300MUV
or
BD9A600MUV
3.3V, 3A
3.3V, 6A
100
90
NAND Flash Memory
80
Enable
BD9A100MUV
EFFICIENCY (%)
Example: Storage
70
1.8V, 1A
DDR Memory
2.5V, 1A
BD9A100MUV
1.2V, 3A
BD9B300MUV
Controller
‐ DDR controller
‐ NAND Flash controller
‐ I/F
‐ I/O
60
50
40
Conditions
VIN = 5.0V
VOUT = 1.8V
fSW = 1MHz
30
20
10
0
0.001
Product example: BD9B300MUV
 Input voltage range
： 2.7V to 5.5V
 Output voltage range ： 0.8V to (VIN×0.8)V
 Reference-voltage
： 0.8V±1.0%
 Output current
： 3A
 Switching frequency ： 1MHz / 2MHz
 Integrated switch FET ： 35mΩ
 Current consumption ： 35μA
 High speed transient response characteristics with
constant-on-time control
 Light-load high-efficiency mode
 Selectable between light-load automatic switching
mode and PWM constant mode
 Adjustable soft start
 Power good output
 Various protection functions
Over current protection (OCP), short-circuit protection
(SCP), thermal shutdown (TSD), undervoltage lockout
(UVLO)
BD9A300MUV PWM constant mode
0.01
0.1
LOAD CURRENT (A)
1
10
Efficiency vs. Load Current
VIN
Enable
10µF
BD9B300MUV
BD9B300MUV
PVIN
PGD
PVIN
PGD
AVIN
AVIN
BOOT
BOOT
EN
15mm×8mm
PGD
CBOOT
0.1µF
VOUT
AGND
AGND
SW
SW
1.0µH
PGND
PGND
R1
SS
CFB
22µF×2
MODE
MODE
CSS
FREQ
FREQ
FB
FB
R2
BD9B300MUV Application Circuit
BD9B300MUV PCB
DC/DC Converters Selection Guide
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5
Selectable from Two Series Depending on the System
The BD9AxxxMUV Series and BD9BxxxMUV Series consist of pin-compatible ICs of 1A to 6A. Thus, you can select the best IC for your application. These series operate in the PWM mode
for an application with high load current, and automatically switch to power-saving operation with SLLMTM (PFM mode) for an application with low load current. The BD9BxxxMUV is a
high-performance version of the BD9AxxxMUV series. Both versions can be interchangeably replaced by changing the PCB layout of a single pin. Also, by drawing a PCB layout compatible
with both series in the initial stage of development, ICs can be easily changed.
Product name
Control mode
High performance
Upper
Compatible
Light‐load operation
BD9B100MUV
BD9B200MUV
BD9B300MUV
BD9B301MUV‐LB
BD9B400MUV
BD9B500MUV
BD9B600MUV
Constant‐on‐time
Deep SLLM
BD9A100MUV
BD9A101MUV‐LB
BD9A300MUV
BD9A301MUV‐LB
BD9A400MUV
BD9A600MUV
Current mode
SLLMTM
Functional difference
• Constant‐on‐time control helps implement transient response faster than that of the BD9AxxxMUV.
• Phase compensation is unnecessary.
• Efficiency across the entire load range is further improved over the BD9AxxxMUV.
• The product operates in the light‐load automatic switching mode by setting the MODE pin to Low and in the PWM constant mode by setting it to High.
• The product operates at 2 MHz by setting the FREQ pin to Low and at 1 MHz by setting it to High.
A small 1 μH coil can be used at 2 MHz.
• The product operates in the PWM constant mode by setting the MODE pin to Low and in the light‐load automatic switching mode by setting it to High.
(This is the same function as the BD9Bxxx Series, but the logic is reversed.)
SLLM : Simple Light Load Mode
SLLMTM : Simple Light Load Mode (Automatic switching from PWM to PFM in the light-load mode)
BD9AxxxMUV
BD9BxxxMUV
Difference in External Components
DC/DC Converters Selection Guide
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6
Pickup
Buck Converter (Integrated Switch FET)
3.3V/5V Power Rail Input
Thin Type, High‐Speed Transient Response Power Supply Solution
The BD91364BMUU provides the highest class of transient response in the industry by incorporating constant-on-time control and an overshoot reduction function. The adopted low type
package is best suited for mounting on slim equipment.
Existing products
BD91364BMUU
VIN: 5V, VO: 1.2V
VIN: 5V, VO: 1.2V
8.5mV
VOUT: 50mV/div
88.5mV
IO: 1A/div
IO = 1A → 3A → 1A
IO = 1A → 3A → 1A
100μsec/div
100μsec/div
BD91364BMUU High‐Speed Transient Response Characteristics
Product example: BD91364BMUV
 Input voltage range
： 2.9V to 5.5V
 Output voltage range ： 0.8V to (VIN×0.8)V
 Reference-voltage
： 0.8V±1.5%
 Output current
： 5A
 Switching frequency
： 1.7MHz
 Integrated switch FET ： 27mΩ
High speed transient response characteristics with constant-on-time control
The light-load automatic switching mode enables high efficiency across the
entire load range.
The overshoot reduction function reduces the increase in output voltage in
the event of rapid changes in load current.
Adjustable soft start
 Power good output
 Various protection functions
Over current protection (OCP), short-circuit protection (SCP), thermal
shutdown (TSD), undervoltage lockout (UVLO)
Conditions
VIN = 5.0V
BD91364BMUU ‐ Efficiency vs. Load Current
BD91364BMUU Thin Type Package
VQFN20U4040M
4.0mm×4.0mm×0.5mm
typ typ max
7
DC/DC Converters Selection Guide
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C6
VIN
22μH
R3
PVCC
PVCC
3A output
BST
BST
Enable
Power Good
EN
EN
U1
BD91364BMUU
C3
Reduced by 29%
0.47μH
VOUT
SW
SW
R1
PGD
PGD
FB
FB
SS
SS
AGND
RES
RES AGND
Soft Start
5A output
AVCC
AVCC
PGND
PGND
C4
22μH
BD91364BMUU PCB
17mm×10mm
Existing PCB
15mm×16mm
R2
Comparison of PCB Mounting Area
BD91364BMUU Application Circuit
Overshoot Reduction
When the load current rapidly reduces, the output voltage increases. Thus, the low-side MOSFET remains ON. At this time, the inclination of the coil current ∆IL becomes -Vo/L. If the slew
rate ∆Iout of the load current Iout becomes greater than ∆IL, continuous charging of excess current to the output capacitor increases the output voltage (shown as a dotted waveform).
Especially, when the output voltage setting value is low, the value of ∆IL becomes small and a more marked increase in output voltage occurs.
The BD91364BMUU activates the overshoot reduction function when the low-side MOSFET remains ON twice as long as PWM operates. By turning OFF both the low-side and high-side
MOSFETs and flowing IL through the low-side MOSFET body diode, -Vf voltage is generated in the SW pin. Accordingly, ∆IL becomes (-Vf-Vo)/L, which suppresses charging of excess
current to the output capacitor and reduces the increase in output voltage.
Inclination ΔIL=
45mV
150mV
Dotted lines show operation of the existing product.
VOUT : 100mV/div
VOUT : 100mV/div
SW : 5V/div
SW : 5V/div
IOUT : 2A/div
4.5A→0A
Twice as long as normal LG High time
Switching Circuit
Output Voltage Transient Characteristics of Existing Product
IOUT : 2A/div
4.5A→0A
Output Voltage Increase Reduction Effect of Overshoot Reduction
8
DC/DC Converters Selection Guide
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Pickup
Buck Converter (Integrated Switch FET)
12V Power Rail Input
Power Supply Solution for Consumer Equipment
The BD9D320EFJ, BD9D321EFJ, BD9C301FJ, BD9C401EFJ, BD9C501EFJ and BD9C601EFJ generate voltages of 5V
100
and 3.3V from a 12V power supply.
Isolated
AC/DC
12V
Example: AV equipment
BD9D320EFJ
BD9D321EFJ
5V, 3A
BD9D320EFJ
BD9D321EFJ
5V, 3A
BD9D320EFJ
BD9D321EFJ
1.8V, 3A
BD9D320EFJ
BD9D321EFJ
3.3V, 3A
80
Tuner, AV broad
70
EFFICIENCY (%)
AC 85 ～ 265 V
VOUT =5.0V
VOUT = 3.3V
VOUT = 1.8V
90
USB ports
DDR Memory
60
50
40
30
BD9C301FJ
BD9C401EFJ
BD9C501EFJ
BD9C601EFJ
Conditions
VIN = 12V
20
Controller
‐ DDR controller
‐ I/F
‐ I/O
3.3V
3A, 4A,
5A, 6A
10
0
0.001
Product example: BD9D321FEJ
0.01
1
10
BD9D321EFJ ‐ Efficiency vs. Load Current
 Input voltage range
： 4.5V to 18V
 Output voltage range ： 0.765V to 7.0V, (VIN×0.07)V to (VIN×0.65)V
 Reference-voltage
： 0.765V±1.5%
 Output current
： 3A
VIN
 Switching frequency ： 700 kHz
 Integrated switch FET ： 100mΩ, 70mΩ
10µF×2
 High speed transient response characteristics with
+
0.1µF
constant-on-time control
 Phase compensation parts are unnecessary.
 A ceramic capacitor is available for output.
 Synchronous rectification type
 Light-load high efficiency mode
 Adjustable soft start that prevents rush current at power ON
Various protection functions
CVREG
Over current protection (OCP), short-circuit protection (SCP),
thermal shutdown (TSD), undervoltage lockout (UVLO)
BD9D321EFJ
BD9D321EFJ
VIN
VIN
Enable
CBOOT
EN
EN
SW
SW
GND
GND
VREG
VREG
SS
SS
CSS
2.2µH
VOUT
R1
22µF
×2
FB
FB
ILOAD
2A/div
IO = 1A→3A→1A
100μs/div
R2
BD9D321EFJ Transient Response Characteristics
17mm×20mm
BD9D321EFJ PCB
www.rohm.com
VIN = 12V
VOUT = 1.8V
VOUT
50mV/div
BOOT
BOOT
BD9D321EFJ Application Circuit
DC/DC Converters Selection Guide
0.1
LOAD CURRENT (A)
9
Pickup
Buck Converter (Integrated Switch FET)
24V Power Rail Input
Power Supply Solution for Home Appliances
The BD9E102FJ and BD9E302EFJ generate voltages of 5V and 3.3V from power supplies of 24V and 15V.
Replacement of the LDO enables energy-savings and reduced heat generation.
100
BD9E102FJ
90
Example: Refrigerator
・ Motor driver
・IPM (Intelligent Power Module)
80
EFFICIENCY (%)
70
AC 85 ～ 265 V
Replaces LDO
5.0V, 1A
15V
BD9E102FJ
Isolated
AC/DC
Sensor and monitor
‐ Thermistor (Refrigerator)
‐ Thermistor (Freezer)
‐ CO2 sensor
60
50
LDO
(BA50BC0WT)
40
30
Replaces LDO
15V
BD9E302EFJ
5.0V, 3A
Conditions
VIN = 12V
VOUT = 5.0V
20
Controller
‐ Digital signal controller
‐ Network
‐ Touch screen
‐ Compressor
10
0
1
Product example: BD9E102FJ
10
100
LOAD CURRENT (mA)
1000
BD9E102FJ ‐ Efficiency vs. Load Current
 Input voltage range
 Output voltage range
： 7.0V to 26V (30V rating)
： (VIN×0.143)V to (VIN×0.7)V
(VIN×0.143)1.0V
VIN
 Reference-voltage
： 0.8V±2.0%
12V
 Output current
： 1.0A
10μF
 Switching frequency ： 570 kHz
 Supports an input rating of 28V that is greatly demanded for electric home
appliances.
Enable
 The excellent efficiency under light load is ideal for equipment that needs to
suppress standby power consumption.
 Integrated switch FET ： 250mΩ, 200mΩ
 High-speed transient response characteristics are delivered by controlling the
current mode. Phase compensation can be set easily.
 Because of synchronous rectification, an external diode is unnecessary.
 Soft start to prevent rush current at power ON
Various protection functions
Over current protection (OCP), short-circuit protection (SCP),
thermal shutdown (TSD), undervoltage lockout (UVLO)
VIN
VIN
BD9E102FJ
BD9E102FJ
BOOT
BOOT
0.1μF
SW
SW
EN
EN
6.8μH
VOUT
5.0V
22μF
COMP
FB
COMP AGND
AGND PGND
PGND FB
430kΩ
82kΩ
BD9E102FJ Application Circuit
BD9E102FJ Evaluation Board
10
DC/DC Converters Selection Guide
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Pickup
Buck Converter (Integrated Switch FET)
24V Power Rail Input
Power Supply Solution for Industrial Equipment
The BD9E100FJ, BD9E101FJ, BD9E300EFJ, BD9E301EFJ and BD9E303EFJ generate voltages of 5V and 3.3V
100
from power supplies of 24V and 12V.
AC 85 ～ 265 V
Isolated
AC/DC
BD9E303EFJ‐LB
90
24V
5V, 1A
BD9E100FJ‐LB
80
Base Unit
‐ ASIC
70
3.3V, 1A
BD9E101FJ‐LB
BD9E300EFJ‐LB
5V, 2.5A
1.8V, 3A
BD9E303EFJ‐LB
EFFICIENCY (%)
BD9E300EFJ‐LB
I/O Unit
‐ ASIC
60
50
40
Conditions
VIN = 24V
VOUT=5.0V
30
Analog Unit
‐ ASIC
20
10
CPU Unit
‐ CPU
0
0
0.5
1
1.5
2
2.5
3
LOAD CURRENT (A)
Product example: BD9E303EFJ‐LB
Efficiency vs. Load Current
Long-term supply indispensable for industrial equipment is assured.
VIN
24V
Supports an input rating of 40V that is greatly demanded for
industrial equipment.
10μF
 Input voltage range
： 7.0V to 36V (40V rating)
 Output voltage range ： (VIN×0.06)V to (VIN×0.8)V
(VIN×0.06)1.0V
Enable
 Reference-voltage
： 1.0V±1.0%
 Output current
： 3.0A
 Built in low ON-resistance switch FET: 90mΩ, 80mΩ
 High-speed transient response characteristics are delivered by
controlling the current mode.
 Because of synchronous rectification, an external diode is unnecessary.
 Soft start to prevent rush current at power ON
Various protection functions
Over current protection (OCP), short-circuit protection (SCP),
thermal shutdown (TSD), undervoltage lockout (UVLO)
VIN
VIN
BD9E303EFJ‐LB
BD9E303EFJ‐LB
BOOT
BOOT
0.1μF
SW
SW
EN
EN
COMP
COMP
10μH
VOUT
5.0V
22μF×2
AGND
AGND PGND
PGND
FB
FB
30kΩ
6800pF
15kΩ
7.5kΩ
Efficient heat radiation characteristics owing to exposed pad
BD9E303EFJ‐LB Application Circuit
11
DC/DC Converters Selection Guide
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Selectable According to System
The BD9E300EFJ-LB and BD9E303EFJ-LB are both buck DC/DC converters with a power rail input of 24V, but they have been developed based on different concepts. Since the
BD9E300EFJ-LB is a high-speed type with a switching frequency of 1 MHz, a small inductor can be used to assure space-savings of the PCB mounting area. Since the BD9E303EFJLB has a integrated FET of low ON-resistance and a low switching frequency of 300 kHz, it assuredly reduces switching-loss and minimizes heat generation with high efficiency.
Product name
Feature
BD9E300EFJ‐LB
Small space‐saving size
BD9E303EFJ‐LB
Low heat generation
Switching frequency
1MHz
300kHz
Inductor value
FET ON‐
resistance
Efficiency
Output current
Maximum Minimum duty ratio duty ratio
4.7μH
170mΩ
140mΩ
See the upper‐right figure on previous page.
2.5A
70%
15%
27mm×10mm
270mm2
10μH
90mΩ
80mΩ
See the upper‐right figure on previous page.
3A
80%
6%
33mm×15mm
495mm2
PCB size
24V Small Size Power Supply Solution
Product example: BD9G101G
VIN
24V
BD9G101G
VCC
VCC
100
BST
BST
4.7μF
LX
LX
Enable
6.8μH
GND
GND
FB
FB
3.9kΩ
680Ω
www.rohm.com
70
VIN=24V
VOUT=5.0V
60
50
40
30
0.1μF
BD9G101G Application Circuit
20
10
0
1
SSOP6
2.9mm×2.8mm
h: 1.25mm
DC/DC Converters Selection Guide
80
VOUT
5.0V
10μF
EN
EN
VIN=12V
VOUT=5.0V
90
0.015μF
EFFICIENCY (%)
DC/DC converter with integrated MOSFET with 45 V rating
 Input voltage range
： 6.0V to 42V (45V rating)
 Output voltage range ： (VIN×0.15)V to (VIN×0.7)V
(VIN×0.15)1.0V
 Reference-voltage
： 0.75V±1.5%
 Output current
： 500mA
 High-speed switching frequency of 1.5 MHz enables use of
small size inductor.
 Diode rectification automatically activates the pulse skip
mode under light load to maintain the high efficiency.
 Integrated High-side switch FET: 800mΩ
 High-speed transient response characteristics are delivered
by controlling the current mode.
 Built-in phase compensation circuit
 Soft start to prevent rush current at power ON
Various protection functions
Over current protection (OCP), thermal shutdown (TSD),
undervoltage lockout (UVLO)
10
100
LOAD CURRENT (mA)
1000
BD9G101G ‐ Efficiency vs. Load Current
12
Pickup
Buck Converter (Integrated Switch FET)
Supporting Maximum 76 V Input
Product example:BD9G341AEFJ
The BD9G341AEFJ is a 1-ch buck switching regulator with a integrated switch FET of 80 V rating (76 V input). Since sufficient voltage margin is ensured in a 48 V bus line adopted
by communication infrastructures, this switching regulator easily enables safe power supply design in high voltage applications such as telephones, routers and base stations.
BD9G341AEFJ
LX pin voltage
20V/div
 Input voltage range ： 12V to 76V (80V rating)
 Output voltage range ： 1.0V to VIN*1
*1 Limitations apply under some
conditions.
 Reference-voltage
： 1.0V±1.5%
 Output current
： 3.0A
 Integrated switch MOSFET of 80 V rating: 150mΩ
 High-speed transient response characteristics are delivered by
controlling the current mode. Phase compensation can be set
easily.
 Soft start to prevent rush current at power ON
 Operating frequency can be set from 50 kHz to 750 kHz.
 Precise EN threshold: ±3%
Various protection functions
Over current protection (OCP), overvoltage protection (OVP),
thermal shutdown (TSD), undervoltage lockout (UVLO)
Output current
2A/div
IC Surface Temperature in Output Short‐Circuit
5ms/div
In the event of an output short‐circuit, the over current protection circuit is used in the hiccup mode to prevent IC heating and destruction.
100
BD9G341AEFJ
90
BD9G341AEFJ
BD9G341EFJ
VIN
VIN
BST
BST
10μF
70
0.1μF
LX
LX
EN
EN
33μH
VOUT
5.0V
100μF
RT
RT
GND
GND
VC
VC
Conditions
VIN = 48V
VOUT = 5.0V
fSW=300kHz
80
FB
FB
EFFICIENCY (%)
VIN
Competitor product
60
+1.5%
+16.3%
+21.3%
50
Competitor product
40
30
3kΩ
20
10
750Ω
0
1
BD9G341AEFJ Application Circuit
Efficient heat radiation characteristics owing to exposed pads
10
100
LOAD CURRENT (mA)
1000
BD9G341AEFJ ‐ Efficiency vs. Load Current
DC/DC Converters Selection Guide
www.rohm.com
3000
13
Pickup
Buck Converter (Integrated Switch FET)
6 kHz High‐Frequency Operating Switching Regulator
 Input voltage range ： 2.3V to 5.5V
Output voltage:
: 1.0V, 1.2V, 1.25V, 1.3V, 1.8V, 1.83V, 2.5V, 3.0V, 3.3V
Output voltage precision: ±2.0%
Output current:
: 1.0A
Switching operation of maximum 6 MHz
Ultra-small 1.3 mm × 0.9 mm size chip package
High-speed transient response characteristics with hysteresis control eliminate phase
compensation.
The PWM/PFM automatic switching function delivers high efficiency across the
entire load area.
The forced PWM mode keeps the switching frequency constant.
 Soft start to prevent rush current at power ON
Various protection functions
7mm×4mm
Over current protection (OCP), thermal shutdown (TSD), undervoltage lockout
(UVLO)
BU90002GWZ PCB
EFFICIENCY (%)
BU90xxxGWZ Series
L : LQM21MPN1R0NG0 (Murata)
LOAD CURRENT (mA)
BU90xxxGWZ ‐ Efficiency vs. Load Current
VOUT
50mV/div
Output
voltage
Product name
Input voltage range
Switching frequency
Maximum output capacitor
PWM/PFM automatic switching
Forced PFM
Forced PWM
Package
1.0V
BU90008GWZ
2.3V～5.5V
3.6MHz
10μF
✔
－
✔
UCSP35L1
1.2V
BU90003GWZ
2.3V～5.5V
4MHz
10μF
✔
－
✔
UCSP35L1
1.25V
BU90007GWZ
2.3V～5.5V
4MHz
10μF
✔
－
✔
UCSP35L1
1.3V
BU90009GWZ
2.3V～5.5V
4.2MHz
10μF
✔
－
✔
UCSP35L1
1.8V
BU90004GWZ
BU90054GWZ
BU90104GWZ
2.3V～5.5V
5.4MHz
10μF
10μF
100μF
✔
－
✔
UCSP35L1
UCSP30L1
UCSP35L1
1.83V
BU90090GWZ
2.3V～5.5V
5.4MHz
10μF
✔
－
✔
UCSP35L1
✔
(100mA max)
✔
2.5V
BU90005GWZ
2.3V～5.5V
6MHz
10μF
－
3.0V
BU90006GWZ
2.3V～5.5V
6MHz
10μF
✔
－
✔
UCSP35L1
3.3V
BU90002GWZ
4.0V～5.5V
6MHz
10μF
✔
－
✔
UCSP35L1
UCSP35L1
UCSP30L1 : 1.3mm×0.9mm×0.33mm
UCSP35L1 : 1.3mm×0.9mm×0.4mm
DC/DC Converters Selection Guide
www.rohm.com
IOUT
200mA/div
10μs/div
BU90003GWZ Transient Response Characteristics (50mA  350mA)
BU90xxxGWZ
VIN
VIN
VIN
LX
LW
1.0μH
VOUT
4.7μF
4.7μF
FB
FB
Enable
EN
EN MODE
MODE GND
GND
BU90xxxGWZ Application Circuit
14
Pickup
Buck Controller (External Switch FET)
Power Supply Solution for FPGA
The BD95601MUV-LB and BD95602MUV-LB are power supply ICs outfitted with H3RegTM technology that ensures high-speed transient response characteristics required by FPGA. These
models generate power supply voltage from a 12 V input voltage, thus satisfying the stringent voltage precision specifications required by FPGA.
FPGA Power Board Tree
12V
BD95601MUV‐LB
1.0V±3.00%, 6A
BD95601MUV‐LB
1.8V±5.00%, 6A
BD95601MUV‐LB
2.0V±3.00%, 2A
2.5V±5.00%, 8A
BD95602MUV‐LB
3.3V±5.00%, 8A
BD95601MUV‐LB
1.0V±3.00%, 6A
BD95601MUV‐LB
1.5V/1.35V±5.00%, 4A
BD95601MUV‐LB
1.2V±2.50%, 4A
BD95602MUV‐LB Circuit Diagram
VIN: 12V, VO: 3.3V
BD95602MUV‐LB
 2ch DC/DC controller equipped with H3RegTM for high-speed
transient response
 Selectable from light-load mode, continuous PWM mode and silent
and light-load mode
 The adjustable soft start function reduces rush current at startup.
 Power good output
 Integrated with various protection
 Input voltage range ： 5.5V to 28V
functions
 Output voltage range ： 1.0V to 5.5V
・ Automatic reset type over current
 Reference-voltage： 0.7V±1.0%
protection (OCP)
 Switching frequency ： 150kHz to 500kHz ・ Overvoltage protection function
DC/DC Converters Selection Guide
(OVP)
・ Thermal shutdown function (TSD)
・ Undervoltage lockout function
(UVLO)
www.rohm.com
VOUT: 100mV/div
IO: 5A/div
IL: 5A/div
20μsec/div
BD95602MUV‐LB High‐Speed Transient Response Characteristics
Avnet Inc.
Power module board (Kintex‐7) for Mini‐
Module Plus development system
15
High‐speed Transient Response Technology
H3RegTM Control Ensures High‐Speed Response to Load Fluctuation
Generally, the current mode is used as the switching regulator control mode. However, transient response characteristics for fluctuating load current may not satisfy the required specifications.
To solve this problem, it is effective to use a switching regulator in the hysteresis control mode. Constant-on-time control, one of the hysteresis control modes, feeds back a ripple voltage
waveform generated by the output voltage and controls switching by comparing the bottom of the ripple voltage against the reference voltage so as to keep the output voltage constant. When
the feedback voltage becomes lower than the reference voltage, a one-shot pulse is generated to turn ON the high-side switch, which enables current supply from input to output. In this way,
H3RegTM enables successive switching control via a straightforward comparison by a comparator. Since this method substantially eliminates time delays in feedback control, faster transient
response characteristics than those in the current mode can be obtained.
H3RegTM control is a ROHM proprietary control mode and an advanced version of constant-on-time control. If the load current increases rapidly and, accordingly, the output voltage drops to
the point that the feedback voltage does not exceed the reference-voltage even after the specified on-time has passed, H3RegTM control extends the on-time of the high-side switch and supplies
more power to accelerate output voltage recovery. This control mode assures faster transient response characteristics than constant-on-time control does. In addition, less frequent switching
caused by rapid load fluctuations reduces noise generation.
H3Reg
Controller
SW
R
IL
Q
Driver
IL
IO
VOUT
Io
S
SW
Vref
Constant‐On‐Time Control Operation Waveform
H3RegTM Block Diagram
IL
Io
SW
t + α
H3RegTM Control Operation Waveform
16
DC/DC Converters Selection Guide
www.rohm.com
Pickup
Buck Controller (External Switch FET)
Buck Controller Supporting Maximum 56 V Input
Product example: BD9611MUV
The BD9611MUV is a rated 60 V synchronous rectification type buck DC/DC controller that enables high voltage input and a wide input voltage range. This model incorporates the control
circuit in the PWM and has voltage modes and drive circuit for two external 10V N-ch FETs. The oscillating frequency and soft start time adjustment function, over current protection function
and synchronization function with external clock featured in this model enable flexible design. In addition, a low input malfunction prevention circuit (EXUVLO) of precise reference voltage is
connected to the CTL pin, and can be adjusted from the VCC-GND resistance ratio. Pre-bias is supported to suppress current incoming from the output side at startup.












Input voltage range
： 10V to 56V (60V rating)
Output voltage range
： 1.0V to (VIN×0.8)V
Reference-voltage
： 0.8V±1.0%
Integrated drive circuit for external N-ch FET
Gate drive voltage
： 9.0V to 11V
Pre-bias supported
Adjustable soft start that prevents rush current at power ON
Operating frequency can be set from 50 kHz to 500 kHz.
UVLO value can be set with an external component.
Synchronization with external clocks is available.
Multi-channel output synchronization using multiple ICs is available.
Various protection functions
Over current protection (OCP), thermal shutdown (TSD), undervoltage lockout (UVLO)
FB
CTL
VCC
CLH
CLL
RCL
INV
SS
BST
BD9611MUV
HG
REG5
LX
RTSS
RT
REG10
LG
SYNC
CLKOUT
GND PGND
100%
Efficiency
95%
BD9611MUV Application Circuit
VIN=24V
VIN=36V
90%
85%
VIN=48V
80%
Conditions
VOUT = 12V
fSW = 250kHz
75%
70%
0
2
4
6
8
10
12
Load Current[A]
BD9611MUV ‐ Efficiency vs. Load Current
VIN = 34V, VOUT = 12V, IO= 0A → 10A
BD9611MUV Transient Response Characteristics
Efficient heat radiation characteristics owing to exposed pad
17
DC/DC Converters Selection Guide
www.rohm.com
200 W Power Supply Solution
 Input voltage
： 40V
 Output voltage
： 24V
 Output current
： 0.01A to 8A
 Switching frequency ： 100kHz
100
90
EFFICIENCY (%)
80
VIN
CVCC
R7
1
CSS 2
3
INV
CLH
16
CLL
17
18
19
BD9611MUV
FB
FB
14
LX
13
RT
40
Conditions
VIN = 40V
VO = 24V
fSW = 100kHz
30
20
RSD221N06×3
0
TR2
12
0
L1
DI1 CBST
4.7μH
3
4
5
6
7
8
COUT2
BD9611MUV ‐ Efficiency vs. Load Current
CSNB
RSD221N06
CREG10
11
2
LOAD CURRENT (mA)
VOUT
COUT1
1
TR1
SYNC
LG
50
RHG
CLO PGND SYNC
10
RTSS
7
6
RT
PGND
RCL
RCL
60
10
HG
HG
REG10
REG10
9
4
CIN
RB161VA‐20
15
RSNB
5
RCL
BD9611MUV
CLKOUT
C2
R2
SS
SS
8
C1
RS
CLL
BST
RTSS
RD1
R1
VCC CLH
GND
RT
RU1
CTL
VCC
REG5
REG5
R5
CTL
20
CREG5
70
High‐side FET : 56.1℃
CRTSS
Inductor : 56.2℃
BD9611MUV 200W Output Application Circuit
IC : 57.4℃
Low‐side FET : 58.9℃
Ta = 25℃
PCB Temperature Distribution
18
DC/DC Converters Selection Guide
www.rohm.com
Pickup
Isolated DC/DC Power Supply
Flyback Converter
Product example ：BD7F100HFN‐LB, BD7F100EFJ‐LB
The BD7F100HFN-LB and BD7F100EFJ-JB are ICs for newly developed isolated flyback DC/DC converters. Since control of the primary side flyback voltage stabilizes the secondary
side output, an output feedback path is unnecessary. This eliminates the optocoupler that is required by general isolated converters to isolate the feedback path. Accordingly, owning to the
cost reduction and elimination of components required to ensure a long service-life, unit reliability can be improved. In terms of performance, high-speed load response is implemented
using adaptive on-time control and the automatic light-load mode realizes high efficiency across the entire load range. In addition, cross-regulation is dramatically improved. These models
are suitable for isolated power supplies for various industries, such as power supplies for isolated gate drivers of inverters.
 Input voltage range ： 3.0V to 40V (45V rating)
 Switch pin voltage
： 50V (60V rating)
 Switch current limit ：1.25A
 Operating frequency ： 400kHz
 Reference-voltage
： ±1.5%
 High-speed load response is implemented by adaptive on-time control.
 Frequency-constant operation facilitates EMC solutions.
 The automatic light-load mode realizes high efficiency across the entire load range.
 Elimination of components across the isolation boundary improves functional safety.
 Elimination of components of finite service-life enables long operation.
 Multi-output configurations of excellent cross-regulation are supported.
 Load compensation function integrated in the secondary SBD
 Output voltage can be set from two external resistors and the transformer winding ratio.
 Integrated soft start function
 Various protection functions
Over current protection (OCP), thermal shutdown (TSD), undervoltage lockout (UVLO)
Example: Inverter
VIN
VOUT_UH
BD7F100HFN‐LB
GND_UH
VIN
VIN
VOUT_UH
Isolator
MCU
Gate Driver
GND_UH
VIN
GND_UH
BD7F100HFN‐LB
GND_WH
VOUT_WH
Isolator
VIN
UH
VOUT_WH
VIN
BD7F100HFN‐LB
HSON8
2.90mm×3.00mm×0.60mm
VOUT_UH
Gate Driver
GND_WH
VIN
VOUT_WH
WH
GND_WH
VOUT_L
SDX/EN
BD7F100HFN‐LB
BD7F100HFN‐LB
GND_L
FB
COMP
SW
AGND
REF
VIN
PGND
BD7F100HFN‐LB Application Circuit
24V→5V
www.rohm.com
DC/DC Converters Selection Guide
BD7F100EFJ‐LB
HTSOP‐J8
4.90mm×6.00mm×1.00mm
VOUT_L
VOUT_L
Isolator
Gate Driver
UL
Isolator
Gate Driver
WL
GND_L
GND_L
19
1:1:1
VIN
24V
SBD
VIN
VIN
10µF
50µH
SDX/EN
SDX/EN
BD7F100HFN‐LB
BD7F100HFN-LB
REF
REF
Example: RS485 Transceiver
Vcc1
50µH 10µF
50µH
SBD
SW
SW
PGND
PGND
BD7F100HFN‐LB
10µF
VOUT-15V, -220mA
Vcc1
3.9kΩ
BD7F100HFN‐LB Application Circuit
24V→±15V
MCU
1:2
VIN
5V
10µH
SDX/EN
SDX/EN
BD7F100HFN‐LB
BD7F100HFN-LB
Isolator
RS485 transceiver
DI
RO
22µF
VOUT-
SBD
5.25
FB
FB
5.2
8
3.9kΩ
BD7F100HFN‐LB Application Circuit
5V→5V
MAXIMUM OUTPUT POWER (W)
REF
REF
SW
SW
PGND
PGND
5.15
7
OUTPUT VOLTAGE (V)
COMP
COMP
AGND
AGND
40µH
Vcc2
Vcc1
DE
VOUT+
5V, 240mA
SBD
VIN
VIN
10µF
Vcc2
COM
SBD
FB
FB
COMP
COMP
AGND
AGND
VOUT+
15V,220mA
6
5
4
3
2
5.05
5
Without load compensation
4.95
4.9
Conditions
VIN = 24V
VOUT = 5.0V
4.85
4.8
1
4.75
0
0
5
10 15 20 25 30 35 40 45 50
VIN VOLTAGE (V)
BD9F100HFN‐LB Maximum Output Power vs. Input Power Supply Voltage
BD7F100HFN‐LB Evaluation Board
With load compensation
5.1
0
200
400
600
800
1000
LOAD CURRENT (mA)
Effect of Load Compensation Function
“Load compensation function” that corrects output
voltage drops caused by the Vf characteristics of
the secondary side SBD that is dependent on load
current
20
DC/DC Converters Selection Guide
www.rohm.com
Pickup
Boost Converter
Portable Power Supply Solution
The BD1865GWL generates the 5 V voltage required by USB ports, HDMI and audio amplifiers from a one-cell Li-ion secondary battery.
Li‐ion
Rechargeable Battery
2.5V～4.5V
BD1865GWL
5.0V, 2A
USB port
HDMI
Audio amplifier
Product example ：BD1865GWL









Input voltage range
： 2.5V to 4.5V
Output voltage range ： 4.9V to 5.2V
Reference-voltage
： 0.8V±1.25%
Integrated 5 A FET switch enables a maximum 2 A output (at Vin 3.2V).
The PWM/PFM automatic switching function delivers high efficiency
across the entire load range.
Elimination of noise within the audible band prevents capacitor noise.
Integrates a mixing PWM mode.
Low quiescent current design of 67 μA
Switching frequency of 2.5 MHz allows use of small inductors.
Various protection functions
Thermal shutdown (TSD), overvoltage protection (OVP), over current
protection (OCP), short-circuit protection (SCP), undervoltage lockout
(UVLO)
VIN
EN
VOUT=5.06V
Switching Frequency: 9kHz
BD1865GWL PCB
BD1865GWL ‐ Efficiency vs. Load Current
PFM/PWM Automatic Switching Mode
VOUT=5.06V
LX
VOUT
DISCHG
MODE
FB
Switching Frequency: 25kHz
GND
PGND
BD1865GWL
BD1865GWL Application Circuit (Example of PFM/PWM Mode)
Ultra‐small package
1.6mm×1.6mm
BD1865GWL ‐ Efficiency vs. Load Current
Mixing PWM Mode
21
DC/DC Converters Selection Guide
www.rohm.com
Lineup of Single Output Buck Converters (Integrated Switch FET)
Unless otherwise specified: ‐ Current mode control ‐ Soft start ‐ Synchronous rectification ‐ Enable
○ ‐ On‐time control
◎ ‐ H3RegTM control
‐ PWM mode
‐ Light‐load efficiency
5V
3.3V
12V
○
8.0
‐ Maximum rating
BD95500MUV
30V PGD
20V
BD9C601EFJ
6.0
◎
Output current (A)
0.3 / 0.6
PGD , Adj.SS
0.2 to 1.0
20V
BD95861MUV
VOUT (V)
Package
VQFN11V3535M
0.7 to 5.0
VQFN040V6060
0.5 to 0.8
(VIN×0.075) to (VIN×0.7)
(VIN×0.075) ≥ 0.8V
0.8 to (VIN×0.5)
(VIN×0.5) ≤ 5.5V
VQFN024V4040
0.5
20V PGD
0.765 to (VIN×0.7)
(VIN×0.7) ≤ 13.5V
HTSOP‐J8
BD9A600MUV
PGD , Adj.SS
1.0
0.8 to (VIN×0.7)
VQFN016V3030
2.9VBD9B600MUV
PGD , Adj.SS
1.0 / 2.0
0.8 to (VIN×0.8)
VQFN016V3030
0.5
(VIN×0.075) to (VIN×0.7)
(VIN×0.075) ≥ 0.8V
HTSOP‐J8
1.7
0.8 to (VIN×0.8)
VQFN20U4040M
1.0 / 2.0
0.8 to (VIN×0.8)
T.B.D. (QFN)
1.5
0.9 to 3.3 *1
VQFN020V4040
0.2 to 1.0
0.7 to 5.0
VQFN032V5050
0.5
(VIN×0.125) to (VIN×0.7)
(VIN×0.125) ≥ 0.8V
HTSOP‐J8
0.38
0.9 to (VIN×0.9)
HTSOP‐J8
0.5 to 0.8
0.8 to (VIN×0.5)
(VIN×0.5) ≤ 5.5V
VQFN016V3030
BD9C501EFJ
5.0
SW Freq.
(MHz)
24V
BD9F800MUX
◎
○
PGD – Power good
Adj.SS – Adjustable soft start
▲ ‐ Non‐synchronous rectification
○ 2.9V BD91364BMUU
○
PGD, Adj.SS , Remote sense
BD9B500MUV
PGD, Adj.SS
BD91363AMUV
4.8
20V
3bit VID
◎
BD95514MUV
BD9C401EFJ
▲
4.0
PGD , Adj.SS
20V
BD9327EFJ / ‐LB
4.75V
30V
20V
Adj.SS
◎ BD95841MUV PGD
○
BD9B400MUV
PGD, Adj.SS
1.0 / 2.0
0.8 to (VIN×0.8)
VQFN016V3030
BD9A400MUV
PGD, Adj.SS
1.0
0.8 to (VIN×0.7)
VQFN016V3030
1.0
0.8 to 3.3 *1
VQFN020V4040
1.0
0.8 to 3.3 *1
VQFN020V4040
BD91361MUV
2bit VID
BD9137MUV
2.3 2.5 2.7 3.0 3.5 4.0 4.5 5.5 6.0 7.0 7.5 14 15 18 28 32 42 56 76 Input voltage (V)
*1 Limitations apply according to input/output voltage
22
DC/DC Converters Selection Guide
www.rohm.com
Lineup of Single Output Buck Converters (Integrated Switch FET) (Continued from the previous page)
Unless otherwise specified: ‐ Current mode control ‐ Soft start ‐ Synchronous rectification ‐ Enable
○ ‐ On‐time control
◎ ‐ H3RegTM control
‐ PWM mode
‐ Light‐load efficiency
‐ Maximum rating
5V
3.3V
PGD – Power good
Adj.SS – Adjustable soft start
▲ ‐ Non‐synchronous rectification
12V
BD9G341AEFJ / ‐LB
80V 0.05 to 0.75
0.7 to 5.0
VQFN032V5050
20V
0.5
(VIN×0.125) to (VIN×0.7)
(VIN×0.125) ≥ 0.8V
SOP‐J8
20V Adj.SS
0.38
0.9 to (VIN×0.9)
HTSOP‐J8
0.75
1.0 to (VIN×0.7)
HTSOP‐J8
0.3
30V
0.55
BD9D320EFJ
20V
Adj.SS
0.7
○
BD9D321EFJ
20V
Adj.SS
0.7
PGOOD
BD9326EFJ / ‐LB
4.75V
▲
3.0
0.5 to 0.8
BD95513MUV
BD9C301FJ / ‐LB
HTSOP‐J8
0.2 to 1.0
40V
○
◎ BD95831MUV
1.0 to (VIN×0.7)
VQFN016V3030
36V
BD9E302EFJ
▲
Package
(VIN×0.06) to (VIN×0.8)
(VIN×0.06) ≥ 1.0V
(VIN×0.143) to (VIN×0.7)
(VIN×0.143) ≥ 1.0V
0.765 to 7.0
(VIN×0.07) to (VIN×0.65)
0.765 to 7.0
(VIN×0.07) to (VIN×0.65)
0.8 to (VIN×0.5)
(VIN×0.5) ≤ 5.5V
BD9E303EFJ‐LB
◎
VOUT (V)
24V
▲
Output current (A)
SW Freq.
(MHz)
30V
PGD, ASS
BD9859EFJ
BD9134MUV
HTSOP‐J8
HTSOP‐J8
HTSOP‐J8
HTSOP‐J8
1.0
3.3
VQFN020V4040
0.8 to (VIN×0.8)
VQFN016V3030
○
BD9B301MUV‐LB
PGD, Adj.SS
1.0 / 2.0
○
BD9B300MUV
PGD, Adj.SS
1.0 / 2.0
0.8 to (VIN×0.8)
VQFN016V3030
BD9A301MUV‐LB
PGD, Adj.SS
1.0
0.8 to (VIN×0.7)
VQFN016V3030
BD9A300MUV
PGD, Adj.SS
1.0
0.8 to (VIN×0.7)
VQFN016V3030
BD9139MUV
1.0
0.8 to 3.3 *1
VQFN016V3030
BD8963EFJ
1.0
1.0 to 2.5 *1
HTSOP‐J8
BD8962MUV
1.0
0.8 to 2.5 *1
VQFN020V4040
1.0
0.8 to 3.3 *1
VQFN020V4040
0.57
(VIN×0.0855) to (VIN×0.7)
(VIN×0.0855) ≥ 1.0V
HTSOP‐J8
1.0
(VIN×0.15) to (VIN×0.7)
(VIN×0.15) ≥ 1.0V
HTSOP‐J8
BD9132MUV
BD9E301EFJ‐LB
2.5
BD9E300EFJ‐LB
2.3 2.5 2.7 3.0 3.5 4.0 4.5 5.5 6.0 7.0 7.5 14 15 18 28
36V
36V
40V
40V
32 42 56 76 Input voltage (V)
*1 Limitations apply according to input/output voltage
23
DC/DC Converters Selection Guide
www.rohm.com
Lineup of Single Output Buck Converters (Integrated Switch FET) (Continued)
Unless otherwise specified: ‐ Current mode control ‐ Soft start ‐ Synchronous rectification ‐ Enable
○ ‐ On‐time control
◎ ‐ H3RegTM control
‐ PWM mode
‐ Light‐load efficiency
3.3V
5V
▲
‐ Maximum rating
▲ ‐ Non‐synchronous rectification
12V
PGD – Power good
Adj.SS – Adjustable soft start
0.9 to (VIN×0.9)
SOP‐J8
0.5
VQFN020V4040
0.5 to 0.8
2.5 to 6.0
(Vccmin=VOUT+1.3V)
0.8 to (VIN×0.5)
(VIN×0.5) ≤ 5.5V
BD8961NV
1.0
3.3
SON008V5060
BD9111NV
1.0
3.3
SON008V5060
BD9110NV
1.0
1.0 to 2.5
SON008V5060
1.0 / 2.0
0.8 to (VIN×0.8)
VQFN016V3030
1.0
1.0 to 2.5 *1
HTSOP‐J8
1.0
1.0 to 2.5 *1
SON008V5060
1.0
1.0 to 2.5 *1
HTSOP‐J8
SON008V5060
13.2V
BD9B200MUV
PGD
Output current (A)
BD89630EFJ
BD8960NV
BD9130EFJ/NV
1.5
Package
0.38
20V
◎ BD95821MUV PGD
○
VOUT (V)
24V
BD9325FJ / ‐LB
4.75V
BD9141MUV
2.0
SW Freq.
(MHz)
VQFN016V3030
○
BU90023NUX
1.0
1.23
VSON008X2030
○
BU90028NUX
1.0
1.175
VSON008X2030
0.6
(VIN×0.06) to (VIN×0.7)
(VIN×0.06) ≥ 1.0V
VSON008X2030
BD8964FVM
1.0
1.0 to 1.8
MSOP8
BD9107FVM
1.0
1.0 to 1.8
MSON8
1.0
0.85 to 1.2
VQFN016V3030
▲
1.2
BD9123MUV
3bitVID
BD9E100FJ‐LB
36V
40V
1.0
BD9E101FJ‐LB
36V
40V
0.57
BD9E102FJ
1.0
BD8313HFN
BD9B100MUV
30V Adj.SS
BD9E151NUX
26V
0.57
30V
100%Duty
PGD
(VIN×0.15) to (VIN×0.7)
(VIN×0.15) ≥ 1.0V
(VIN×0.0855) to (VIN×0.7)
(VIN×0.0855) ≥ 1.0V
(VIN×0.143) to (VIN×0.7)
(VIN×0.143) ≥ 1.0V
SOP‐J8
SOP‐J8
SOP‐J8
1.0
1.2 to 12
HSON8
1.0 / 2.0
0.8 to (VIN×0.8)
VQFN016V3030
BD9A101MUV‐LB
PGD, Adj.SS
1.0
0.8 to (VIN×0.7)
VQFN016V3030
BD9A100MUV
PGD, Adj.SS
1.0
0.8 to (VIN×0.7)
VQFN016V3030
2.3 2.5 2.7 3.0 3.5 4.0 4.5 5.5 6.0 7.0 7.5 14 15 18 28
32 42 56 76 Input voltage (V)
*1 Limitations apply according to input/output voltage
24
DC/DC Converters Selection Guide
www.rohm.com
Lineup of Single Output Buck Converters (Integrated Switch FET) (Continued)
Unless otherwise specified: ‐ Current mode control ‐ Soft start ‐ Synchronous rectification ‐ Enable
‐ PWM mode
‐ Light‐load efficiency
○ ‐ On‐time control
◎ ‐ H3RegTM control
3.3V
Output current(A)
1.0
5V
‐ Maximum rating
▲ ‐ Non‐synchronous rectification
12V
PGD – Power good
Adj.SS – Adjustable soft start
VOUT (V)
Package
24V
○
BU90008GWZ
3.6
1.0
UCSP35L1
○
BU90003GWZ
4.0
1.2
UCSP35L1
○
BU90007GWZ
4.0
1.25
UCSP35L1
○
BU90009GWZ
4.2
1.3
UCSP35L1
○
BU90004GWZ / BU90054GWZ
Maximum output capacity 10μF
5.4
1.8
UCSP35L1/UCSP30L1
○
BU90104GWZ
Maximum output capacity 100μF
5.4
1.8
UCSP35L1
○
BU90090GWZ
5.4
1.83
UCSP35L1
○
BU90005GWZ
100%Duty
6.0
2.5
UCSP35L1
○
BU90006GWZ
100%Duty
6.0
3.0
UCSP35L1
6.0
3.3
UCSP35L1
BD8967FVM
1.0
3.3
MSOP8
BD9104FVM
1.0
3.3
MSOP8
1.5
1.2 to 12
HSON8
BD9109FVM / ‐LB
1.0
3.3
MSOP8
BD9102FVM
1.0
1.24
MSOP8
BD8966FVM
1.0
1.0 to 2.5
MSON8
BD9106FVM / ‐LB
1.0
1.0 to 2.5
MSON8
1.0
1.2
MSOP8
1.0
1.0 to 1.5
HSON8
1.0
1.0 to 3.3
MSON8
1.5
(VIN×0.15) to (VIN×0.7)
(VIN×0.15) ≥ 1.0V
SSOP6
1.0
1.0 to 2.0
VCSP50L2
○ BU90002GWZ
0.9
BD8312HFN
0.8
100%Duty
BD9103FVM
BD9120HFN
0.6
SW Freq.
(MHz)
BD9161FVM / ‐LB
100%Duty
▲
0.5
0.3
BD9G101G
45V
BD9122GUL
2.3 2.5 2.7 3.0 3.5 4.0 4.5 5.5 6.0 7.0 7.5 14 15 18 28
32 42 56 76 Input voltage (V)
25
DC/DC Converters Selection Guide
www.rohm.com
Lineup of Dual Output Buck Converters (Integrated Switch FET)
Unless otherwise specified: ‐ Current mode control ‐ Soft start ‐ Synchronous rectification ‐ Enable
◎ ‐ H3RegTM control
‐ PWM mode
‐ Light‐load efficiency
PGD – Power good
‐ Maximum rating
3.3V
SW Freq.
(MHz)
5V
12V
Output current (A)
◎
BD93291EFJ
30V Ch1: 3.0A
Ch2: 2.0A
26V
Ch1: 3.0A
◎ BD95830MUV Ch2: 3.0A
3.0
BD91362MUV
I2C I/F
BD9150MUV
4.75V
1.5
BD9152MUV
0.8
0.4
8V
2.8V
BD9151MUV
Ch1: 3.0A
Ch2: 1.0A
Ch1: 1.5A
Ch2: 1.5A
Ch1: 1.5A
Ch2: 1.5A
Ch1: 0.4A
Ch2: 0.8A
PGD, Voltage detector, High‐side controller
BD91501MUV
2.55V
100% duty
VOUT (V)
Package
24V
Ch1: 0.4A
Ch2: 0.3A
2.3 2.5 2.7 3.0 3.5 4.0 4.5 5.5 6.0 7.0 7.5 14 15 18 28
0.3 to 0.6
Ch1: 5.0
Ch2: 0.8 to 4.0
HTSOP‐J8
0.4 to 0.8
Ch1: 0.8 to 5.5
Ch2: 0.8 to 5.5
VQFN032V5050
1.0
Ch1: 1.0 to 3.3
Ch2: 1.0 to 3.3
VQFN024V4040
1.5
Ch1: 3.3
Ch2: 0.8 to 2.5
VQFN020V4040
1.0
Ch1: 3.3
Ch2: 0.8 to 2.5
VQFN020V4040
1.0
Ch1: 1.8
Ch2: 1.2
VQFN020V4040
1.65
Ch1: 2.55
Ch2: 1.8
VQFN016V3030
Input voltage (V)
32 42 56 76 Lineup of Buck Controllers (External Switch FET)
Unless otherwise specified: ‐ Current mode control ‐ Soft start ‐ Synchronous rectification ‐ Enable
◎ ‐ H3RegTM control
Controller (External Switch)
‐ PWM mode
‐ Light‐load efficiency
‐ Maximum rating
3.3V
5V
12V
■(0.05‐0.5MHz)
Dual
PGD – Power good
Adj.SS – Adjustable soft start
▲ ‐ Non‐synchronous rectification ■ ‐ External synchronization
10V
SW Freq.
(MHz)
VOUT (V)
Package
24V
BD9611MUV
60V Adj.SS 0.05 to 0.5
1.0 to (VIN×0.8)
VQFN020V4040
SSOP‐B20
▲
3.6V
BD9848FV
35V
36V
Adj.SS
0.1 to 1.5
Ch1: 1.0 to VIN *1
Ch2: 1.0 to VIN *1
▲
3.6V
BD9845FV
35V
36V
Adj.SS
0.1 to 1.5
1.0 to VIN *1
SSOP‐B14
0.01 to 0.3
1.25 to VIN *1
SOP‐J8
0.1 to 0.8
1.25 to VIN *1
MSOP8
0.15 to 0.5
Ch1: 1.0 to 5.5
Ch2: 1.0. to 5.5
VQFN032V5050
0.2 to 0.5
0.75 to 2.0
VQFN020V4040
▲
BD63536FJ
▲
BD9305AFVM
4.2V
Dual ◎
◎
No Enable
20V
BD95602MUV‐LB
BD95601MUV‐LB
32V
30V
30V
25V
2.3 2.5 2.7 3.0 3.5 4.0 4.5 5.5 6.0 7.0 7.5 14 15 18 28
28V
PGD, Adj.SS
PGD, Adj.SS
32 42 56 76 Input voltage (V)
*1 Limitations apply according to input/output voltage
26
DC/DC Converters Selection Guide
www.rohm.com
Lineup of Boost/Buck‐boost/SEPIC and Inverting Converters and Controllers
Switch allowable current (mA)
Dual ▲ 3.6V
BA9743AFV
Dual ▲
▲
‐
‐
✔ Voltage
10 to 800
2.5 to *1
SOP16
SSOP‐A16
35V
36V Adj.SS
✔
‐
‐
✔ Voltage
10 to 800
1.222 to *1
SSOP‐B16
35V
36V Adj.SS
✔
‐
‐
✔ Voltage
10 to 800
2.505 to *1
SSOP‐B16
✔ Voltage
10 to 3000
1.0 to *1
HTSSOP‐B20
100 to 800
VIN to (VIN/0.3)
MSOP8
‐
BD9306AFVM
20V Soft Start
✔
‐
‐
‐
Voltage
‐
✔
‐
‐
Voltage 200 to 1000
1.8 to 12
VQFN016V3030
✔
‐
‐
‐
Current
2500
4.9 to 5.2
UCSP50L1C
Soft Start
✔
‐
‐
‐
Voltage
1200
4.0 to 12
VSON010V3030
Soft Start
✔
‐
‐
‐
Voltage
1200
4.0 to 11
VSON010V3030
Soft Start
✔
✔
‐
‐
Voltage 300 to 2000
1.8 to 5.2
VQFN016V3030
Adj.SS
✔
✔
✔
‐
Current
600/1200
VIN to 14
MSOP8
✔
✔
✔
‐
Current
600/1200
VIN to 14
MSOP8
BD8311NUV
BD8306MUV
BD8152FVM
BD8158FVM
15V Soft Start
Adj.SS
Dual ▲
BD8316GWL
Soft Start
✔
‐
‐
✔ Current
1600
Ch1: ‐9.0 to ‐1.0
Ch2: Vin to +18
UCSP50L1
Dual ▲
BD8317GWL
Soft Start
✔
‐
‐
✔ Current
800
Ch1: ‐9.0 to ‐1.0
Ch2: Vin to +18
UCSP50L1
BU33DV7NUX
Soft Start, Input pass through
✔
‐
‐
‐
Current
600
3.3
VSON010V3030
BU34DV7NUX
Soft Start, Input pass through
✔
‐
‐
‐
Current
600
3.4
VSON010V3030
✔
‐
‐
‐
Current
100
3.3
SSOP5
1000
300
10
Package
‐
BD8314NUV
▲
VOUT (V)
✔
Soft Start
▲
SW Freq.
(kHz)
20V Adj.SS
4.2V
BD1865GWL
Inversing
✔
Control mode
BD9851EFV
BD8303MUV
▲
36V Adj.SS
8.8V
BA9744FV
▲
SEPIC
5.4V
BA9741F / BA9741FS
Dual ▲
2000
1400
4.4V
Dual ▲ 3.6V
2500
35V
2cell Li‐Ion
2.7V
5100
Buck‐boost
Controller (External Switch)
1cell Li‐Ion
Boost
▲ ‐ Non‐synchronous rectification PGD – Power good
Adj.SS – Adjustable soft start
‐ Maximum rating
‐ PWM mode
‐ Light‐load efficiency
BU33DV5G
1.75 1.8 2.1 2.5 2.7 3.0 3.5 4.0 4.5 5.5 6.0 11 12 14 18 28 36 42 Input voltage (V)
*1 Limitations apply according to input/output voltage
27
DC/DC Converters Selection Guide
www.rohm.com
Buck Converters (Integrated Switch FET) 3.3 V/5 V Power Rail Input Selection Guide
Externally
Synchronizable
Adjustable Soft
Start
Synchronous
Rectifier
Light‐Load
Efficiency
BD9122GUL
7
0.3
2.5 to 5.5
1.0 to 2.0
1
Current
‐
‐
‐
✔
✔
BD9161FVM
BD9161FVM‐LB
7
0.6
2.5 to 4.5
1.0 to 3.3
1
Current
‐
‐
‐
✔
✔
Latch
BU9006GUZ
7
0.75
2.5 to 4.5
1.0 to VIN
2
Current
‐
‐
‐
✔
‐
BD9109FVM
BD9109FVM‐LB
7
0.8
4.5 to 5.5
3.3
1
Current
‐
‐
‐
✔
✔
Latch
BD9102FVM
7
0.8
4.0 to 5.5
1.24
1
Current
‐
‐
‐
✔
✔
BD8966FVM
7
0.8
4.0 to 5.5
1.0 to 2.5
1
Current
‐
‐
‐
✔
BD9106FVM
BD9106FVM‐LB
7
0.8
4.0 to 5.5
1.0 to 2.5
1
Current
‐
‐
‐
BD9120HFN
7
0.8
2.7 to 5.5
1.0 to 1.5
1
Current
‐
‐
BD8967FVM
7
0.9
4.5 to 5.5
3.3
1
Current
‐
BD9104FVM
7
0.9
4.5 to 5.5
3.3
1
Current
‐
Part No.
Switching
Output Voltage
Frequency
(V)
(MHz)
Control
Mode
Thermal Protection
Input
Voltage
Range
(V)
Over‐Current
Protection
Output
Current
(A)
Power Good
Features
Input
Voltage
Maximum
Rating
(V)
Operating
Temperature
(℃)
Package
(mm)
Latch
Latch
‐25 to +85
VCSP50L2
(2.5×1.1)
Latch
‐25 to +85
MSOP8
‐35 to +85
VCSP35L1
(1.6×1.6)
Latch
‐25 to +85
MSOP8
Latch
Latch
‐25 to +85
MSOP8
‐
Latch
Latch
‐25 to +85
MSOP8
✔
✔
Latch
Latch
‐25 to +85
MSOP8
‐
✔
✔
Latch
Latch
‐25 to +85
HSON8
‐
‐
✔
‐
Latch
Latch
‐25 to +85
MSOP8
‐
‐
✔
✔
Latch
Latch
‐25 to +85
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
New BU90008GWZ
7
1
2.3 to 5.5
1.0
3.6
On‐time
‐
‐
‐
✔
✔
BU90003GWZ
7
1
2.3 to 5.5
1.2
4
On‐time
‐
‐
‐
✔
✔
BU90007GWZ
7
1
2.3 to 5.5
1.25
4
On‐time
‐
‐
‐
✔
✔
New BU90009GWZ
7
1
2.3 to 5.5
1.3
4.2
On‐time
‐
‐
‐
✔
✔
BU90004GWZ
7
1
2.3 to 5.5
1.8
5.4
On‐time
‐
‐
‐
✔
✔
BU90054GWZ
7
1
2.3 to 5.5
1.8
5.4
On‐time
‐
‐
‐
✔
✔
New BU90104GWZ
7
1
2.3 to 5.5
1.8
5.4
On‐time
‐
‐
‐
✔
✔
New BU90090GWZ
7
1
2.3 to 5.5
1.83
5.4
On‐time
‐
‐
‐
✔
✔
Description
Recove Recove Incorporates in/output
ry
ry
bias switch, 100% Duty
‐40 to +85
‐40 to +85
‐40 to +85
‐40 to +85
Maximum output
capacitance 10μF
Maximum output
capacitance 10μF
Maximum output
capacitance 100μF
‐40 to +85
‐40 to +85
‐40 to +85
‐40 to +85
MSOP8
UCSP35L1
(1.3×0.9×0.4)
UCSP35L1
(1.3×0.9×0.4)
UCSP35L1
(1.3×0.9×0.4)
UCSP35L1
(1.3×0.9×0.4)
UCSP35L1
(1.3×0.9×0.4)
UCSP30L1
(1.3×0.9×0.33)
UCSP35L1
(1.3×0.9×0.4)
UCSP35L1
(1.3×0.9×0.4)
28
DC/DC Converters Selection Guide
www.rohm.com
Buck Converters (Integrated Switch FET) 3.3 V/5 V Power Rail Input Selection Guide (Continued)
Output
Current
(A)
Input
Voltage
Range
(V)
BU90005GWZ
7
1
2.3 to 5.5
2.5
6
On‐time
‐
‐
‐
✔
✔
BU90006GWZ
7
1
2.3 to 5.5
3.0
6
On‐time
‐
‐
‐
✔
BU90002GWZ
7
1
4.0 to 5.5
3.3
6
On‐time
‐
‐
‐
BD9A100MUV
BD9A101MUV‐LB
7
1
2.7 to 5.5
0.8 to (VIN×0.7)
1
Current
✔
‐
7
1
2.7 to 5.5
0.8 to (VIN×0.8)
1 / 2
On‐time
✔
BD8964FVM
7
1.2
4.0 to 5.5
1.0 to 1.8
1
Current
BD9107FVM
7
1.2
4.0 to 5.5
1.0 to 1.8
1
BD9123MUV
7
1.2
2.7 to 5.5
0.85 to 1.2
BU90023NUX
7
1.5
2.3 to 5.5
BU90028NUX
7
1.5
BD8961NV
7
BD9111NV
Switching
Output Voltage
Frequency
(V)
(MHz)
Thermal Protection
Features
Input
Voltage
Maximum
Rating
(V)
Recove Recove
ry
ry
‐40 to +85
UCSP35L1
(1.3×0.9×0.4)
✔
Recove Recove
ry
ry
‐40 to +85
UCSP35L1
(1.3×0.9×0.4)
✔
✔
Recove Recove
ry
ry
‐40 to +85
UCSP35L1
(1.3×0.9×0.4)
✔
✔
✔
Recove Recove
ry
ry
‐40 to +85
‐40 to +125
VQFN016V3030
‐
✔
✔
Deep
Recove Recove
ry
ry
‐40 to +85
VQFN016V3030
‐
‐
‐
✔
‐
Latch
Latch
‐25 to +85
MSOP8
Current
‐
‐
‐
✔
✔
Latch
Latch
‐25 to +85
MSOP8
1
Current
✔
‐
‐
✔
✔
Latch
Latch
‐40 to +95
VQFN016V3030
1.23
1
On‐time
‐
‐
‐
✔
✔
Recove Recove
ry
ry
‐40 to +85
VSON008X2030
2.3 to 5.5
1.175
1
On‐time
‐
‐
‐
✔
✔
Recove Recove
ry
ry
‐40 to +85
VSON008X2030
2
4.5 to 5.5
3.3
1
Current
‐
‐
‐
✔
‐
Latch
Latch
‐25 to +105
SON008V5060
7
2
4.5 to 5.5
3.3
1
Current
‐
‐
‐
✔
✔
Latch
Latch
‐25 to +105
SON008V5060
BD9110NV
7
2
4.5 to 5.5
1.0 to 2.5
1
Current
‐
‐
‐
✔
✔
Latch
Latch
‐25 to +105
SON008V5060
BD89630EFJ
7
2
2.7 to 5.5
1.0 to 2.5 *1
1
Current
‐
‐
‐
✔
‐
Latch
Latch
‐25 to +85
HTSOP‐J8
BD8960NV
7
2
2.7 to 5.5
1.0 to 2.5 *1
1
Current
‐
‐
‐
✔
‐
Latch
Latch
‐25 to +105
SON008V5060
BD9130EFJ
7
2
2.7 to 5.5
1.0 to 2.5 *1
1
Current
‐
‐
‐
✔
✔
Latch
Latch
‐25 to +105
HTSOP‐J8
BD9130NV
7
2
2.7 to 5.5
1.0 to 2.5 *1
1
Current
‐
‐
‐
✔
✔
Latch
Latch
‐25 to +105
SON008V5060
7
2
2.7 to 5.5
0.8 to (VIN×0.8)
1 / 2
On‐time
✔
‐
✔
✔
Deep
‐40 to +85
VQFN016V3030
New BD9B100MUV
New BD9B200MUV
Externally
Synchronizable
Adjustable Soft
Start
Synchronous
Rectifier
Light‐Load
Efficiency
Over‐Current
Protection
Package
(mm)
Control
Mode
Power Good
Operating
Temperature
(℃)
Part No.
*1 Restrictions depend on input/output voltage conditions.
DC/DC Converters Selection Guide
www.rohm.com
Recove Recove
ry
ry
Description
Output voltage setting by
3‐bit parallel control
29
Features
Input
Voltage
Range
(V)
Output Voltage
(V)
Switching
Frequency
(MHz)
Control
Mode
BD8962MUV
7
3
2.7～5.5
0.8～2.5 *1
1
Current
‐
‐
‐
‐
Latch
BD9132MUV
7
3
2.7～5.5
0.8～3.3 *1
1
Current
‐
‐
‐
✔
✔
BD8963EFJ
7
3
2.7～5.5
1.0～2.5 *1
1
Current
‐
‐
‐
✔
BD9134MUV
7
3
4.5～5.5
3.3
1
Current
‐
‐
‐
BD9139MUV
7
3
2.7～5.5
0.8～3.3 *1
1
Current
‐
‐
BD9A300MUV
BD9A301MUV‐LB
7
3
2.7～5.5
0.8～(VIN×0.7)
1
Current
✔
BD9B300MUV
New BD9B301MUV‐LB
7
3
2.7～5.5
0.8～(VIN×0.8)
1 / 2
On‐time
BD9137MUV
7
4
2.7～5.5
0.8～3.3 *1
1
BD91361MUV
7
4
2.7～5.5
0.8～3.3 *1
BD9A400MUV
7
4
2.7～5.5
New BD9B400MUV
7
4
BD91363AMUV
7
New BD91364BMUU
Operating
Temperature
(℃)
Package
(mm)
✔
Latch
‐40～+105
VQFN020V4040
Latch
Latch
‐40～+105
VQFN020V4040
‐
Latch
Latch
‐25～+85
HTSOP‐J8
✔
✔
Latch
Latch
‐40～+105
VQFN020V4040
‐
✔
✔
Latch
Latch
‐40～+105
VQFN016V3030
‐
✔
✔
✔
Recove Recove
ry
ry
‐40～+85
‐40～+125
VQFN016V3030
✔
‐
✔
✔
Deep
Recove Recove
ry
ry
‐40～+85
‐40～+125
VQFN016V3030
Current
‐
‐
‐
✔
✔
Recove Recove
ry
ry
‐40～+105
VQFN020V4040
1
Current
‐
‐
‐
✔
✔
‐40～+105
VQFN020V4040
0.8～(VIN×0.7)
1
Current
✔
‐
✔
✔
✔
Recove Recove
ry
ry
‐40～+85
VQFN016V3030
2.7～5.5
0.8～(VIN×0.8)
1 / 2
On‐time
✔
‐
✔
✔
Deep
Recove Recove
ry
ry
‐40～+85
VQFN016V3030
4.8
2.7～5.5
0.9～3.3 *1
1.5
Current
‐
‐
‐
✔
✔
Latch
Latch
‐40～+105
VQFN020V4040
7
5
2.9～5.5
0.8～(VIN×0.8)
1.7
On‐time
✔
‐
✔
✔
✔
Latch
Recove
ry
‐40～+105
VQFN20U4040M
☆ BD9B500MUV
7
5
2.7～5.5
0.8～(VIN×0.8)
1 / 2
On‐time
✔
‐
✔
✔
Deep
Recove Recove
ry
ry
‐40～+85
VQFN016V3030
BD9A600MUV
7
6
2.7～5.5
0.8～(VIN×0.7)
1
Current
✔
‐
✔
✔
✔
Recove Recove
ry
ry
‐40～+85
VQFN016‐V3030
New BD9B600MUV
7
6
2.7～5.5
0.8～(VIN×0.8)
1 / 2
On‐time
✔
‐
✔
✔
Deep
Recove Recove
ry
ry
‐40～+85
VQFN016V3030
Part No.
☆ Under Development
Power Good
Thermal Protection
Output
Current
(A)
Externally
Synchronizable
Adjustable Soft
Start
Synchronous
Rectifier
Light‐Load
Efficiency
Over‐Current
Protection
Input
Voltage
Maximum
Rating
(V)
Latch
Latch
Description
Output voltage setting by 2‐bit
parallel control
Output voltage setting by 3‐bit
parallel control
*1 Restrictions depend on input/output voltage conditions.
30
DC/DC Converters Selection Guide
www.rohm.com
Buck Converters (Integrated Switch FET) 12 V Power Rail Input Selection Guide
Features
Output
Current
(A)
Input
Voltage
Range
(V)
Output Voltage
(V)
Switching
Frequency
(MHz)
Control
Mode
BD8312HFN
15
0.8
3.5～14
1.2～12
1.5
Current
‐
‐
‐
✔
‐
‐
Recove
ry
‐
BD8313HFN
15
1
3.5～14
1.2～12
1
Current
‐
‐
‐
✔
‐
‐
Recove
ry
‐
BD9141MUV
15
2
4.5～13.2
2.5～6.0 *1
0.5
Current
‐
‐
‐
✔
✔
Latch
Latch
BD95821MUV
15.2
2
7.5～15
0.8～(VIN×0.5)
（VIN×0.5)≦5.5
0.5～0.8
H Reg
✔
‐
‐
✔
‐
Latch
Recove
ry
BD9325FJ
BD9325FJ‐LB
20
2
4.75～18
0.9～(VIN×0.9)
0.38
Current
‐
‐
✔
‐
‐
BD9C301FJ
BD9C301FJ‐LB
20
3
4.5～18
(VIN×0.125)～(VIN×0.7)
(VIN×0.125)≧ 0.8
0.5
Current
‐
‐
‐
✔
‐
BD95831MUV
15.2
3
7.5～15
0.8～(VIN×0.5)
（VIN×0.5)≦5.5
0.5～0.8
H Reg
✔
‐
‐
✔
‐
BD9D320EFJ
20
3
4.5～18
0.765～7.0
(VIN×0.07)～(VIN×0.65)
0.7
On‐time
‐
‐
✔
✔
‐
BD9D321EFJ
20
3
4.5～18
0.765～7.0
(VIN×0.07)～(VIN×0.65)
0.7
On‐time
‐
‐
✔
✔
BD9859EFJ
15
3
5.0～14
1.0～(VIN×0.7)
0.75
Current
‐
‐
‐
BD9326EFJ
BD9326EFJ‐LB
20
3
4.75～18
0.9～(VIN×0.9)
0.38
Current
‐
‐
BD9C401EFJ
20
4
4.5～18
(VIN×0.125)～(VIN×0.7)
(VIN×0.125)≧ 0.8
0.5
Current
‐
BD95841MUV
15.2
4
7.5～15
0.8～(VIN×0.5)
（VIN×0.5)≦5.5
0.5～0.8
H Reg
BD9327EFJ
BD9327EFJ‐LB
20
4
4.75～18
0.9～(VIN×0.9)
0.38
BD9C501EFJ
20
5
4.5～18
(VIN×0.075)～(VIN×0.7)
(VIN×0.075)≧ 0.8
BD95861MUV
20
6
7.5～18
BD9C601EFJ
20
6
BD95500MUV
24
6
100% Duty
‐25～+85
HSON8
100% Duty
‐40～+85
HSON8
‐
‐40～+105
VQFN020V4040
✔
‐20～+100
VQFN016V3030
Recove Recove
ry
ry
‐
‐40～+85
SOP‐J8
Latch
Recove
ry
‐
‐40～+85
‐40～+125
SOP‐J8
Latch
Recove
ry
✔
‐20～+100
VQFN016V3030
Recove Recove
ry
ry
‐
‐40～+85
HTSOP‐J8
✔
Recove Recove
ry
ry
‐
‐40～+85
HTSOP‐J8
‐
‐
Recove Recove
ry
ry
‐
‐40～+85
HTSOP‐J8
✔
‐
‐
Recove Recove
ry
ry
‐
‐40～+85
HTSOP‐J8
‐
‐
✔
‐
Latch
Recove
ry
‐
‐40～+85
HTSOP‐J8
✔
‐
‐
✔
‐
Latch
Recove
ry
✔
‐20～+100
VQFN016V3030
Current
‐
‐
✔
‐
‐
Recove Recove
ry
ry
‐
‐40～+85
HTSOP‐J8
0.5
Current
‐
‐
‐
✔
‐
Latch
Recove
ry
‐
‐40～+85
HTSOP‐J8
0.8～(VIN×0.5)
（VIN×0.5)≦5.5
0.5～0.8
H Reg
✔
‐
‐
✔
‐
Latch
Recove
ry
✔
‐20～+100
VQFN024V4040
4.5～18
(VIN×0.075)～(VIN×0.7)
(VIN×0.075)≧ 0.8
0.5
Current
‐
‐
‐
✔
‐
Latch
Recove
ry
‐
‐40～+85
HTSOP‐J8
3.0～20
0.7～5.0
0.2～1.0
H Reg
✔
‐
✔
✔
✔
Latch
Recove
ry
✔
‐10～+100
VQFN040V6060
3
3
3
3
3
Over‐Voltage
Protection
Package
Externally
Synchronizable
Adjustable Soft
Start
Synchronous
Rectifier
Light‐Load
Efficiency
Over‐Current
Protection
Operating
Temperature
(℃)
Power Good
Part No.
Thermal Protection
Input
Voltage
Maximum
Rating
(V)
Description
Output Discharge
*1 Restrictions depend on input/output voltage conditions.
31
DC/DC Converters Selection Guide
www.rohm.com
Buck Converters (Integrated Switch FET) 24 V Power Rail Input Selection Guide
Features
Input
Voltage
Range
(V)
Output Voltage
(V)
Switching
Frequency
(MHz)
Control
Mode
BD9G101G
45
0.5
6.0～42
(VIN×0.15)～(VIN×0.7)
(VIN×0.15)≧ 1.0
1.5
Current
‐
‐
‐
‐
‐
Recove Recove
ry
ry
BD9E100FJ‐LB
40
1
7.0～36
(VIN×0.15)～(VIN×0.7)
(VIN×0.15)≧ 1.0
1
Current
‐
‐
‐
✔
‐
0.57
Current
‐
‐
‐
✔
Thermal Protection
Output
Current
(A)
Package
‐
‐40～+105
SSOP6
Recove Recove
ry
ry
✔
‐40～+150
SOP‐J8
‐
Recove Recove
ry
ry
✔
‐40～+150
SOP‐J8
Over‐Voltage
Protection
Operating
Temperature
(℃)
Externally
Synchronizable
Adjustable Soft
Start
Synchronous
Rectifier
Light‐Load
Efficiency
Over‐Current
Protection
Part No.
Power Good
Input
Voltage
Maximum
Rating
(V)
Description
BD9E101FJ‐LB
40
1
7.0～36
(VIN×0.0855)～(VIN×0.7)
(VIN×0.0855)≧ 1.0
BD9E102FJ
30
1
7.0～26
(VIN×0.143)～(VIN×0.7) *1
(VIN×0.143)≧ 1.0
0.57
Current
‐
‐
‐
✔
✔
Recove Recove
ry
ry
✔
‐40～+85
SOP‐J8
BD9E151NUX
30
1.2
6.0～28
(VIN×0.06)～(VIN×0.7)
(VIN×0.06)≧ 1.0
0.6
Current
‐
‐
✔
‐
‐
Recove Recove
ry
ry
✔
‐40～+85
VSON008X2030
BD9701CP‐V5
36
1.5
8.0～35
1.0～(VIN‐3.0)
0.1
Voltage
‐
‐
‐
‐
‐
BD9701FP
36
1.5
8.0～35
1.0～(VIN‐3.0)
0.1
Voltage
‐
‐
‐
‐
‐
BD9703CP‐V5
36
1.5
8.0～35
1.0～(VIN‐3.0)
0.3
Voltage
‐
‐
‐
‐
‐
BD9703FP
36
1.5
8.0～35
1.0～(VIN‐3.0)
0.3
Voltage
‐
‐
‐
‐
‐
BD9870FPS
36
1.5
8.0～35
1.0～(0.8×(VIN‐I O×RON)
0.9
Voltage
‐
‐
‐
‐
‐
BD9873CP‐V5
36
1.5
8.0～35
1.0～(0.8×(VIN‐I O×RON)
0.11
Voltage
‐
‐
‐
‐
‐
BD9778F
BD9778HFP
36
2
7.0～35
(VIN×0.06)～VIN
(VIN×0.06)≧ 1.0
0.05～0.5
Current
‐
‐
‐
‐
‐
BD9E300EFJ‐LB
40
2.5
7.0～36
(VIN×0.15)～(VIN×0.7)
(VIN×0.15)≧ 1.0
1
Current
‐
‐
‐
✔
BD9E301EFJ‐LB
40
2.5
7.0～36
(VIN×0.0855)～(VIN×0.7)
(VIN×0.0855)≧ 1.0
0.57
Current
‐
‐
‐
New BD9E302EFJ
30
3
7.0～28
(VIN×0.143)～(VIN×0.7)
(VIN×0.143)≧ 1.0
0.55
Current
‐
‐
New BD9E303EFJ‐LB
40
3
7.0～36
(VIN×0.06)～(VIN×0.8)
(VIN×0.06)≧ 1.0
0.3
Current
‐
BD9702CP‐V5
36
3
8.0～35
1.0～(VIN‐3.0)
0.11
Voltage
BD9874CP‐V5
36
3
8.0～35
1.0～(0.8×(VIN‐I O×RON)
0.11
Voltage
BD95513MUV
30
3
4.5～28
0.7～5.0
0.2～1.0
H Reg
BD95514MUV
30
4
4.5～28
0.7～5.0
0.2～1.0
☆ BD9F800MUX
30
8
4.5～28
0.765～(VIN×0.7)
(VIN×0.7)≦ 13.5
0.3 / 0.6
☆ Under Development
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
Recove
ry
‐
100% Duty
‐40～+85
TO220CP‐V5
‐
100% Duty
‐40～+85
TO252‐5
‐
100% Duty
‐40～+85
TO220CP‐V5
‐
100% Duty
‐40～+85
TO252‐5
‐
100% Duty
‐40～+85
TO252S‐5
‐
100% Duty
‐40～+85
TO220CP‐V5
Recove Recove
ry
ry
‐
100% Duty
‐40～+125
SOP8
HRP7
‐
Recove Recove
ry
ry
✔
‐40～+150
HTSOP‐J8
✔
‐
Recove Recove
ry
ry
✔
‐40～+150
HTSOP‐J8
‐
✔
✔
Recove Recove
ry
ry
✔
‐40～+85
HTSOP‐J8
‐
‐
✔
‐
Recove Recove
ry
ry
✔
‐40～+150
HTSOP‐J8
‐
‐
‐
‐
‐
Recove Recove
ry
ry
‐
‐40～+85
TO220CP‐V5
‐
‐
‐
‐
‐
Recove Recove
ry
ry
‐
‐40～+85
TO220CP‐V5
3
✔
‐
✔
✔
✔
Latch
Recove
ry
✔
Output Discharge
‐10～+100
VQFN032V5050
H Reg
3
✔
‐
✔
✔
✔
Latch
Recove
ry
✔
Output Discharge
‐10～+100
VQFN032V5050
On‐time
✔
‐
‐
✔
‐
‐40～+85
VQFN11V3535M
Recove Recove
ry
ry
‐
*1 Restrictions depend on input/output voltage conditions.
32
DC/DC Converters Selection Guide
www.rohm.com
Buck Converters (Integrated Switch FET) Selection Guide for Maximum 75 V Input
BD9G341AEFJ
BD9G341AEFJ‐LB
Control
Mode
80
3
12～76
1.0～VIN *1
0.05～0.75
Current
✔
‐
‐
‐
Over‐Voltage
Protection
Switching
Frequency
(MHz)
Thermal Protection
Output Voltage
(V)
Recove Recove
ry
ry
‐
Description
✔
Operating
Temperature
(℃)
Package
‐40～+85
HTSOP‐J8
*1 Restrictions depend on input/output voltage conditions.
Dual Output Selection Guide
Switching
Output Voltage
Frequency
(V)
(MHz)
Control
Mode
Over‐Voltage
Protection
Input
Voltage
Range
(V)
Thermal Protection
Part No.
Output
Current
(A)
Externally
Synchronizable
Adjustable Soft
Start
Synchronous
Rectifier
Light‐Load
Efficiency
Over‐Current
Protection
Features
Input
Number Voltage
of
Maximum
Channels
Rating
(V)
Power Good
New
Input
Voltage
Range
(V)
Externally
Synchronizable
Adjustable Soft
Start
Synchronous
Rectifier
Light‐Load
Efficiency
Over‐Current
Protection
Part No.
Output
Current
(A)
Power Good
Features
Input
Voltage
Maximum
Rating
(V)
Description
Operating
Temperature
(℃)
Package
‐30 to +105
VQFN016V3030
‐40 to +85
VQFN020V4040
BD91501MUV
2
7
Io1 : 0.4
Io2 : 0.3
2.55 to 5.5
Vo1 : 2.55
Vo2 : 1.80
1.65
Current
‐
‐
‐
✔
✔
Latch
Recove
ry
‐
100% Duty
BD9151MUV
2
7
Io1 : 0.4
Io2 : 0.8
2.8 to 5.5
Vo1 : 1.8
Vo2 : 1.2
1
Current
‐
‐
‐
✔
✔
Latch
Recove
ry
‐
BD9150MUV
2
7
Io1 : 1.5
Io2 : 1.5
4.75 to 5.5
Vo1 : 3.3
Vo2 : 0.8 to 2.5
1.5
Current
‐
‐
‐
✔
✔
Latch
Recove
ry
Voltage Detector,
High‐side gate
ll
‐
‐40 to +85
VQFN020V4040
BD9152MUV
2
7
Io1 : 1.5
Io2 : 1.5
4.5 to 5.5
Vo1 : 3.3
Vo2 : 0.8 to 2.5
1
Current
‐
‐
‐
✔
✔
Latch
Recove
ry
‐
‐40 to +85
VQFN020V4040
BD93291EFJ
2
30
Io1 : 2.5
Io2 : 1.5
8.0 to 26
Vo1 : 5.0
Vo2 : 0.8 to 4.0
1.5 to 2.5
H Reg
‐
‐
‐
✔
✔
Recove Recove
ry
ry
‐
‐40 to +85
HTSOP‐J8
BD91362MUV
2
7
Io1 : 3.0
Io2 : 1.0
2.7 to 5.5
Vo1 : 1.0 to 3.3
Vo2 : 1.0 to 3.3
1
Current
‐
‐
‐
✔
✔
Latch
Recove
ry
‐
‐40 to +105
VQFN024V4040
BD95830MUV
2
15.1
Io1 : 3.0
Io2 : 3.0
7.5 to 15
Vo1 : 0.8 to 5.5
Vo2 : 0.8 to 5.5
0.4 to 0.8
H Reg
‐
‐
‐
✔
‐
Latch
Recove
Latch
ry
‐20 to +100
VQFN032V5050
3
3
8 bit Voltage setting
2
by I C I/F
33
DC/DC Converters Selection Guide
www.rohm.com
Lineup of Boost/Buck‐boost/SEPIC and Inverting Converters (Integrated Switch FET)
Boost/Buck‐boost/SEPIC and Inverting Converter Selection Guide
Input
Voltage
(V)
Output
Voltage
(V)
Switching
Frequency
(kHz)
Control
Mode
Buck‐Boost
SEPIC
Inverting
Soft Start
Input
Pass through
UVLO
BU33DV5G
1
10
1.75 to 4.5
3.3
100
Current
✔
‐
‐
‐
✔
‐
‐
‐
✔
Recove
ry
✔
SSOP5
BU33DV7NUX
1
300
1.8 to 5.5
3.3
600
Current
✔
‐
‐
‐
✔
✔
✔
✔
✔
Recove
ry
✔
VSON010V3030
BU34DV7NUX
1
300
1.8 to 5.5
3.4
600
Current
✔
‐
‐
‐
✔
✔
✔
✔
✔
Recove
ry
✔
VSON010V3030
BD8152FVM
1
1400
2.5 to 5.5
VIN to 14
600 / 1200
Current
✔
✔
✔
‐
‐
‐
Adj.
‐
✔
Recove
ry
✔
MSOP8
BD8158FVM
1
1400
2.1 to 4.0
VIN to 14
600 / 1200
Current
✔
✔
✔
‐
‐
‐
Adj.
‐
✔
Recove
ry
✔
MSOP8
BD8306MUV
1
2000
1.8 to 5.5
1.8 to 5.2
300 to 2000
Voltage
✔
✔
‐
‐
✔
‐
✔
‐
✔
Latch
✔
VQFN016V3030
BD8314NUV
1
2500
3.0 to 12
4.0 to 12
1200
Voltage
✔
‐
‐
‐
‐
‐
✔
‐
✔
Latch
✔
VSON010V3030
BD8311NUV
1
2500
3.5 to 11
4.0 to 11
1200
Voltage
✔
‐
‐
‐
‐
‐
✔
‐
✔
Latch
✔
VSON010V3030
New BD1865GWL
1
5100
2.5 to 4.5
4.9 to 5.2
2500
Current
✔
‐
‐
‐
✔
✔
✔
‐
✔
Recove
ry
✔
UCSP50L1C
(1.6×1.6)
BD8316GWL
2
1000
2.5 to 5.5
Vo1 : ‐9.0 to ‐1.0
Vo2 : VIN to 18
1600
Current
✔
‐
‐
✔
‐
‐
✔
‐
✔
Latch
✔
UCSP50L1
(1.8×1.5)
BD8317GWL
2
1000
2.5 to 5.5
Vo1 : ‐9.0 to ‐1.0
Vo2 : VIN to 18
800
Current
✔
‐
‐
✔
‐
‐
✔
‐
✔
Latch
✔
UCSP50L1
(1.8×1.5)
Part No.
Over‐Current
Protection
Switch
Current
Limit
(mA)
Synchronous
Rectifier
Light‐Load
Efficiency
Number
of
Channels
Boost
Thermal Protection
Features
Package
(mm)
34
DC/DC Converters Selection Guide
www.rohm.com
Controllers (External Switch FET)
Buck Controller Selection Guide
Over‐Voltage
Protection
Control
Mode
Thermal Protection
Supply
Switching
Output Voltage
Voltage
Frequency
(V)
(V)
(MHz)
Externally
Synchronizable
Adjustable Soft
Start
Synchronous
Rectifier
Light‐Load
Efficiency
Over‐Current
Protection
Part No.
Input
Voltage
Range
(V)
Power Good
Features
Input
Number Voltage
Maximum
of
Channels Rating
(V)
Description
Operating
Temperature
(℃)
Package
‐40 to +85
MSOP8
‐10 to +85
VQFN020V4040
‐
‐
‐
‐
‐
Latch
Recove
ry
H Reg
✔
‐
✔
✔
✔
Latch
Recove Recove
Tracking feature
ry
ry
0.01 to 0.3
Voltage
‐
‐
‐
‐
‐
Recove Recove Recove
ry
ry
ry
‐25 to +85
SOP‐J8
1.0 to VIN *1
0.1 to 1.5
Voltage
‐
‐
✔
‐
‐
Recove Recove
ry
ry
‐
‐40 to +85
SSOP‐B14
‐
1.0 to (VIN×0.8)
0.05 to 0.5
Voltage
‐
✔
✔
✔
‐
Recove Recove
ry
ry
‐
‐40 to +105
VQFN020V4040
5.5 to 28
‐
1.0 to 5.5
0.15 to 0.5
H Reg
✔
‐
✔
✔
✔
‐20 to +85
VQFN032V5050
3.6 to 35
‐
1.0 to VIN *1
0.1 to 1.5
Voltage
‐
‐
✔
‐
‐
‐40 to +105
SSOP‐B20
BD9305AFVM
1
20
4.2 to 18
‐
1.25 to VIN *1
0.1 to 0.8
Voltage
BD95601MUV‐LB
1
28
4.5 to 25
4.5 to 5.5
0.75 to 2.0
0.2 to 0.5
BD63536FJ
1
32
3.0 to 30
‐
1.25 to VIN *1
BD9845FV
1
36
3.6 to 35
‐
BD9611MUV
1
60
10 to 56
BD95602MUV
BD95602MUV‐LB
2
30
BD9848FV
2
36
3
3
Latch
‐
Pre Bias,
Adjustable UVLO
Recove Recove Output discharge,
ry
ry 3.3V LDO, 5V LDO
Recove Recove
ry
ry
‐
*1 Restrictions depend on input/output
voltage conditions.
Boost/Buck‐boost Controller Selection Guide
Description
Operating
Temperature
(℃)
Package
(mm)
BD8303MUV
1
15
2.7 to 14
1.8 to 12
200 to 1000
Voltage
‐
✔
‐
‐
✔
‐
✔
Latch
Recove
ry
‐25 to +85
VQFN016V3030
BD9306AFVM
1
20
4.2 to 18
VIN to (VIN/0.3)
100 to 800
Voltage
✔
‐
‐
‐
✔
‐
‐
Latch
Recove
ry
‐40 to +85
MSOP8
BD9851EFV
2
20
4.0 to 18
1.0 to *1
10 to 3000
Voltage
✔
‐
✔
✔
‐
✔
‐
Latch
Recove
ry
‐40 to +85
HTSSOP‐B20
BA9743AFV
2
36
3.6 to 35
2.505 to *1
10 to 800
Voltage
✔
‐
✔
✔
‐
✔
‐
Latch
Recove
Adjustable Dead Time
ry
‐40 to +85
SSOP‐B16
BA9744FV
2
36
2.5 to 35
1.222 to *1
10 to 800
Voltage
✔
‐
✔
✔
‐
✔
‐
Latch
Recove
Adjustable Dead Time
ry
‐40 to +85
SSOP‐B16
BA9741F
2
36
3.6 to 35
2.5 to *1
10 to 800
Voltage
✔
‐
✔
✔
‐
✔
‐
Latch
Recove
Adjustable Dead Time
ry
‐40 to +85
SOP16
BA9741FS
2
36
3.6 to 35
2.5 to *1
10 to 800
Voltage
✔
‐
✔
✔
‐
✔
‐
Latch
Recove
Adjustable Dead Time
ry
‐40 to +85
SSOP‐A16
Thermal
Protection
Enable
Control
Mode
Buck
Switching
Frequency
(kHz)
Inverting
Output
Voltage
(V)
Buck‐Boost
Input
Voltage
(V)
Boost
Part No.
Adjustable
Soft Start
Synchronous
Rectifier
Short Circuit
Protection
Features
Input
Number Voltage
of
Maximum
Channels
Rating
(V)
*1 Restrictions depend on input/output voltage conditions.
35
DC/DC Converters Selection Guide
www.rohm.com
Power MOSFET
Middle Power Dual Package MOSFET
The HP8K Series helps to reduce mounting surface by encapsulating
the high-side and low-side MOSFETs, which are switching
components of DC/DC converters, into a single package.
The single-package design reduces inductance wiring between the
high-side and low-side MOSFETs to improve conversion efficiency.
Low ON-resistance and small capacity with the latest-generation
device process realize high efficiency even in the high-frequency
switching operation.
VIN
HP8K Series
Single output MOSFET
D1
G1
DC/DC
D
C/DC
Controller
Controller
S1/D2
Dual output MOSFET
G2
S2
Application Circuit Diagram
Product Example: HP8K Series
Dual Type MOSFET Selection Guide
 30V rating
 The mounting surface is reduced by integrating the high-side and
low-side MOSFETs into a single package.
 A combination of the latest-generation device process and package
realizes high efficiency even in high-frequency switching operation.
 Figure of Merit (FOM) is double that of the existing process.
 N-ch + N-ch structure
 The product lineup covers drain currents up to 32A + 12A.
Single Type MOSFET Selection Guide
Gate Charge Gate to Drain: Qgd (nC)
VOUT
High‐side
MOSFET
Low‐side
MOSFET
Mounting surface is halved by integrating two MOSFETs into a single package.
FOM = Ron×Qgd
10
7
Existing process
FOM = 16
4
New process
FOM = 8
2
1
1
2
4
7
On‐resistance: Ron (mΩ)
10
Improvement of Figure of Merit (FOM)
36
DC/DC Converters Selection Guide
www.rohm.com
Isolated DC/DC Power Supplies
Isolated Flyback Converter Selection Guide
Switching
Frequency
(kHz)
Control
Mode
Soft Start
Light‐Load
Efficiency
UVLO
New BD7F100HFN‐LB
New BD7F100EFJ‐LB
1W at VIN 5.0V
5W at VIN 24V
45
1.25
3.0 to 40
400
Adaptive
on‐time
✔
✔
✔
✔
New BD7F200HFN‐LB
☆ BD7F200EFJ‐LB
5W at VIN 12V
10W at VIN 24V
45
2.75
8.0 to 40
400
Adaptive
on‐time
✔
✔
✔
✔
5W at VIN 48V
80
1.0
6.0 to 80
400
Adaptive
on‐time
✔
✔
✔
✔
Part No.
☆ BD7J100HFN‐LB
☆ BD7J100EFJ‐LB
Thermal
Protection
Input
Voltage
Range
(V)
Over‐Current
Protection
Output
Power
(W)
Switch
Current
Limit
(A)
Enable
Features
Input
Voltage
Maximum
Rating
(V)
Operating
Junction
Temperature
Range
(℃)
Package
Feed
back
Feed
back
‐40 to +125
HSON8
HTSOP‐J8
Feed
back
Feed
back
‐40 to +125
HSON8
HTSOP‐J8
Feed
back
Feed
back
‐40 to +125
HSON8
HTSOP‐J8
☆ Under Development
37
DC/DC Converters Selection Guide
www.rohm.com
Notice
Precautions Regarding Application Examples and External Circuits
Precaution on using ROHM Products
1.
(Note 1)
If you intend to use our Products in devices requiring extremely high reliability (such as medical equipment
,
aircraft/spacecraft, nuclear power controllers, etc.) and whose malfunction or failure may cause loss of human life,
bodily injury or serious damage to property (“Specific Applications”), please consult with the ROHM sales
representative in advance. Unless otherwise agreed in writing by ROHM in advance, ROHM shall not be in any way
responsible or liable for any damages, expenses or losses incurred by you or third parties arising from the use of any
ROHM’s Products for Specific Applications.
(Note1) Medical Equipment Classification of the Specific Applications
JAPAN
USA
EU
CHINA
CLASSⅢ
CLASSⅡb
CLASSⅢ
CLASSⅢ
CLASSⅣ
CLASSⅢ
2.
3.
4.
ROHM designs and manufactures its Products subject to strict quality control system. However, semiconductor products
can fail or malfunction at a certain rate. Please be sure to implement, at your own responsibilities, adequate safety
measures including but not limited to fail-safe design against the physical injury, damage to any property, which a failure
or malfunction of our Products may cause. The following are examples of safety measures:
[a] Installation of protection circuits or other protective devices to improve system safety
[b] Installation of redundant circuits to reduce the impact of single or multiple circuit failure
Our Products are not designed under any special or extraordinary environments or conditions, as exemplified below.
Accordingly, ROHM shall not be in any way responsible or liable for any damages, expenses or losses arising from the
use of any ROHM’s Products under any special or extraordinary environments or conditions. If you intend to use our
Products under any special or extraordinary environments or conditions (as exemplified below), your independent
verification and confirmation of product performance, reliability, etc, prior to use, must be necessary:
[a] Use of our Products in any types of liquid, including water, oils, chemicals, and organic solvents
[b] Use of our Products outdoors or in places where the Products are exposed to direct sunlight or dust
[c] Use of our Products in places where the Products are exposed to sea wind or corrosive gases, including Cl2,
H2S, NH3, SO2, and NO2
[d] Use of our Products in places where the Products are exposed to static electricity or electromagnetic waves
[e] Use of our Products in proximity to heat-producing components, plastic cords, or other flammable items
[f] Sealing or coating our Products with resin or other coating materials
[g] Use of our Products without cleaning residue of flux (even if you use no-clean type fluxes, cleaning residue of
flux is recommended); or Washing our Products by using water or water-soluble cleaning agents for cleaning
residue after soldering
[h] Use of the Products in places subject to dew condensation
2.
You agree that application notes, reference designs, and associated data and information contained in this document
are presented only as guidance for Products use. Therefore, in case you use such information, you are solely
responsible for it and you must exercise your own independent verification and judgment in the use of such information
contained in this document. ROHM shall not be in any way responsible or liable for any damages, expenses or losses
incurred by you or third parties arising from the use of such information.
Precaution for Electrostatic
This Product is electrostatic sensitive product, which may be damaged due to electrostatic discharge. Please take proper
caution in your manufacturing process and storage so that voltage exceeding the Products maximum rating will not be
applied to Products. Please take special care under dry condition (e.g. Grounding of human body / equipment / solder iron,
isolation from charged objects, setting of Ionizer, friction prevention and temperature / humidity control).
Precaution for Storage / Transportation
1.
Product performance and soldered connections may deteriorate if the Products are stored in the places where:
[a] the Products are exposed to sea winds or corrosive gases, including Cl2, H2S, NH3, SO2, and NO2
[b] the temperature or humidity exceeds those recommended by ROHM
[c] the Products are exposed to direct sunshine or condensation
[d] the Products are exposed to high Electrostatic
2.
Even under ROHM recommended storage condition, solderability of products out of recommended storage time period
may be degraded. It is strongly recommended to confirm solderability before using Products of which storage time is
exceeding the recommended storage time period.
3.
Store / transport cartons in the correct direction, which is indicated on a carton with a symbol. Otherwise bent leads
may occur due to excessive stress applied when dropping of a carton.
4.
Use Products within the specified time after opening a humidity barrier bag. Baking is required before using Products of
which storage time is exceeding the recommended storage time period.
Precaution for Product Label
QR code printed on ROHM Products label is for ROHM’s internal use only.
When disposing Products please dispose them properly using an authorized industry waste company.
5.
Please verify and confirm characteristics of the final or mounted products in using the Products.
In particular, if a transient load (a large amount of load applied in a short period of time, such as pulse. is applied,
confirmation of performance characteristics after on-board mounting is strongly recommended. Avoid applying power
exceeding normal rated power; exceeding the power rating under steady-state loading condition may negatively affect
product performance and reliability.
7.
De-rate Power Dissipation (Pd) depending on Ambient temperature (Ta). When used in sealed area, confirm the actual
ambient temperature.
8.
Confirm that operation temperature is within the specified range described in the product specification.
9.
ROHM shall not be in any way responsible or liable for failure induced under deviant condition from what is defined in
this document.
Precaution for Mounting / Circuit board design
2.
If change is made to the constant of an external circuit, please allow a sufficient margin considering variations of the
characteristics of the Products and external components, including transient characteristics, as well as static
characteristics.
Precaution for Disposition
The Products are not subject to radiation-proof design.
6.
1.
1.
When a highly active halogenous (chlorine, bromine, etc.) flux is used, the residue of flux may negatively affect product
performance and reliability.
In principle, the reflow soldering method must be used on a surface-mount products, the flow soldering method must
be used on a through hole mount products. If the flow soldering method is preferred on a surface-mount products,
please consult with the ROHM representative in advance.
Precaution for Foreign Exchange and Foreign Trade act
Since concerned goods might be fallen under listed items of export control prescribed by Foreign exchange and Foreign
trade act, please consult with ROHM in case of export.
Precaution Regarding Intellectual Property Rights
1.
All information and data including but not limited to application example contained in this document is for reference
only. ROHM does not warrant that foregoing information or data will not infringe any intellectual property rights or any
other rights of any third party regarding such information or data.
2.
ROHM shall not have any obligations where the claims, actions or demands arising from the combination of the
Products with other articles such as components, circuits, systems or external equipment (including software).
3.
No license, expressly or implied, is granted hereby under any intellectual property rights or other rights of ROHM or any
third parties with respect to the Products or the information contained in this document. Provided, however, that ROHM
will not assert its intellectual property rights or other rights against you or your customers to the extent necessary to
manufacture or sell products containing the Products, subject to the terms and conditions herein.
Other Precaution
1.
This document may not be reprinted or reproduced, in whole or in part, without prior written consent of ROHM.
2.
The Products may not be disassembled, converted, modified, reproduced or otherwise changed without prior written
consent of ROHM.
3.
In no event shall you use in any way whatsoever the Products and the related technical information contained in the
Products or this document for any military purposes, including but not limited to, the development of mass-destruction
weapons.
4.
The proper names of companies or products described in this document are trademarks or registered trademarks of
ROHM, its affiliated companies or third parties.
For details, please refer to ROHM Mounting specification
38
DC/DC Converters Selection Guide
www.rohm.com
AEK59‐A1‐0020 ©2016 ROHM Co., Ltd. All rights reserved.
Application Engineer Div.