SII CRS02 Step-up, super-small package, 1.2 mhz pwm / pfm switchable switching regulator Datasheet

S-8363 Series
www.sii-ic.com
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz
PWM / PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
© SII Semiconductor Corporation, 2010
The S-8363 Series is a CMOS step-up switching regulator which consists of a reference voltage source, an oscillation
circuit, an error amplifier, a phase compensation circuit, a current limit circuit, and a start-up circuit.
Due to the operation of the PWM / PFM switching control, pulses are skipped under the light load operation and the
S-8363 Series prevents decrease in efficiency caused by IC’s operating current.
The S-8363 Series is capable of start-up from 0.9 V (IOUT = 1 mA) by the start-up circuit, and is suitable for applications
which use one dry cell.
The output voltage is freely settable from 1.8 V to 5.0 V by external parts.
Ceramic capacitors can be used for output capacitor. Small packages SNT-6A and SOT-23-6 enable high-density
mounting.
 Features
• Low operation voltage
• Oscillation frequency
• Input voltage range
• Output current
• Reference voltage
• Efficiency
• Soft start function
• Low current consumption
• Duty ratio
• Power-off function
• Current limit circuit
• Nch power MOS FET ON resistance
• Start-up function
• Lead-free, Sn 100%, halogen-free*1
*1.
: Start-up from 0.9 V (IOUT = 1 mA) guaranteed
: 1.2 MHz
: 0.9 V to 4.5 V
: 300 mA (VIN = 1.8 V, VOUT = 3.3 V)
: 0.6 V±2.5%
: 85%
: 1.2 ms typ.
: During switching-off, 95 μA typ.
: PWM / PFM switching control
max.88%
: Current consumption during power-off 3.0 μA max.
: limits the peak value of inductor current
: 0.25 Ω typ.
: Operation with fixed duty pulse under the VOUT voltage of 1.4 V or less
Refer to “ Product Name Structure” for details.
 Applications
• MP3 players, digital audio players
• Digital cameras, GPS, wireless transceiver
• Portable devices
 Packages
• SNT-6A
• SOT-23-6
1
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Block Diagram
L = 2.2 μH
SD
VOUT
VOUT
CONT
VIN
ON/OFF
Oscillation
Circuit
ON/OFF
Circuit
Internal
SLOPE
Compensation Power Supply
Current
Limit Circuit
Error Amplifier
−
VIN
VIN
MUX
CIN
Start-up
Circuit
Switching
Control
Circuit
VSS
Figure 1
2
STU Mode
Circuit VOUT CFB
Σ
+
RFB1
COUT
10 μF
FB
+
−
PWM
Reference
Comparator Voltage
Source
RFB2
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Product Name Structure
Users can select the packages for the S-8363 Series. Refer to “1. Product name” regarding the contents of product
name, “2. Package” regarding the package drawings and “3. Product list” regarding the product type.
1.
Product name
S-8363B
-
xxxx
U
2
Environmental code
U: Lead-free (Sn 100%), halogen-free
*1
Package name (abbreviation) and IC packing specification
I6T1: SNT-6A, Tape
M6T1: SOT-23-6, Tape
*1. Refer to the tape specification.
2.
Package
Package name
3.
Drawing code
Package
Tape
Reel
Land
SNT-6A
PG006-A-P-SD
PG006-A-C-SD
PG006-A-R-SD
PG006-A-L-SD
SOT-23-6
MP006-A-P-SD
MP006-A-C-SD
MP006-A-R-SD
−
Product list
Table 1
Remark
SNT-6A
SOT-23-6
S-8363B-I6T1U2
S-8363B-M6T1U2
Please select products of environmental code = U for Sn 100%, halogen-free products.
3
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Pin Configurations
Table 2
SNT-6A
Top view
1
6
2
5
3
4
Pin No.
Symbol
1
FB
2
VSS
3
CONT
4
VIN
5
VOUT
6
ON / OFF
SNT-6A
Description
Output voltage feedback pin
GND pin
External inductor connection pin
IC power supply pin
Output voltage pin
Power-off pin
Figure 2
“L” : Power-off (standby)
Table 3
SOT-23-6
Pin No.
1
5
2
Figure 3
4
4
3
SOT-23-6
Symbol
Top view
6
“H” : Power-on (normal operation)
Description
Power-off pin
1
ON / OFF
2
VOUT
3
VIN
4
CONT
5
VSS
6
FB
“H” : Power-on (normal operation)
“L” : Power-off (standby)
Output voltage pin
IC power supply pin
External inductor connection pin
GND pin
Output voltage feedback pin
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Absolute Maximum Ratings
Table 4
Absolute Maximum Ratings
(Ta = +25°C, VSS = 0 V unless otherwise specified)
Item
VIN pin voltage
Symbol
Absolute Maximum Ratings
Unit
VIN
VSS−0.3 to VSS+5.0
V
VOUT pin voltage
VOUT
VSS−0.3 to VSS+6.0
V
FB pin voltage
VFB
VSS−0.3 to VOUT+0.3
V
CONT pin voltage
VCONT
VSS−0.3 to VSS+6.0
V
ON/OFF pin voltage
VON / OFF
VSS−0.3 to VIN+0.3
V
400*1
mW
650*1
mW
−40 to +85
°C
−40 to +125
°C
Power Dissipation
SNT-6A
PD
SOT-23-6
Operating ambient temperature
Topr
Storage temperature
Tstg
*1. When mounted on board
[Mounted board]
(1) Board size :
114.3 mm × 76.2 mm × t1.6 mm
(2) Name :
JEDEC STANDARD51-7
Caution The absolute maximum ratings are rated values exceeding which the product could suffer physical
damage. These values must therefore not be exceeded under any conditions.
Power Dissipation (PD) [mW]
700
600
SOT-23-6
500
400
300
200
SNT-6A
100
0
0
50
100
150
Ambient Temperature (Ta) [°C]
Figure 4
Package Power Dissipation (When Mounted on Board)
5
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Electrical Characteristics
Table 5
Item
Operating start voltage*1
Operating input voltage
Output voltage range
FB voltage
FB voltage temperature
coefficient
FB pin input current
Current consumption during
operation
Electrical Characteristics
(VIN = 1.8 V, VOUT = 3.3 V, Ta = +25°C unless otherwise specified)
Test
Conditions
Min.
Typ.
Max.
Unit
Circuit
IOUT = 1 mA, VOUT(S)*2 = 3.3 V
⎯
⎯
0.9
V
2
⎯
⎯
⎯
4.5
V
2
⎯
1.8
⎯
5.0
V
2
⎯
0.585 0.600 0.615
V
1
Symbol
VST
VIN
VOUT(R)
VFB
ΔVFB
ΔTa
IFB
IIN1
ISS1
IIN2
ISS2
Ta = −40°C to +85°C
VOUT = 1.8 V to 5.5 V, FB pin
During switching, at no load
VFB = VFB(S)*3 × 0.95
⎯
±100
⎯
ppm/°C
1
−0.1
⎯
⎯
⎯
⎯
⎯
6
450
6
95
＋0.1
15
650
15
150
μA
μA
μA
μA
μA
1
1
1
1
1
Current consumption during
During switching stop
switching off
VFB = VFB(S)× 1.1
VON / OFF = 0 V,
Current consumption during
ISSS
⎯
⎯
3.0
μA
1
power-off
VIN = VOUT = 4.5 V
Oscillation frequency
fOSC
⎯
1.0
1.2
1.4
MHz
2
Maximum duty ratio
MaxDuty VFB = VFB(S) × 0.95
82
88
94
%
2
PWM / PFM switching duty ratio
PFMDuty
⎯
⎯
13
⎯
%
2
*4
Power MOS FET ON resistance
⎯
⎯
0.25
⎯
Ω
1
RNFET
VON / OFF = 0 V
⎯
0.01
0.5
μA
1
Power MOS FET leakage current ILSW
Limited current
ILIM
⎯
0.9
1.1
1.3
A
3
VIN = 1.8 V to 4.5 V, ON/OFF pin
0.75
⎯
⎯
V
1
High level input voltage
VSH
VIN = 1.8 V to 4.5 V, ON/OFF pin
Low level input voltage
VSL
⎯
⎯
0.25
V
1
VIN = 1.8 V to 4.5 V, ON/OFF pin
High level input current
ISH
−0.1
⎯
0.1
μA
1
VIN = 1.8 V to 4.5 V, ON/OFF pin
−0.1
⎯
0.1
μA
1
Low level input current
ISL
Soft-start time*5
⎯
0.6
1.2
1.8
ms
2
tSS
*1. This is the guaranteed value measured with external parts shown in “Table 6 External Parts List” and with test
circuits shown in Figure 6. The operating start voltage varies largely depending on diode’s forward voltage. Perform
sufficient evaluation with actual application.
*2. VOUT(S) can be set by the ratio of VFB value and the output voltage setting resistors (RFB1, RFB2). For details, refer to “
External Parts Selection”.
*3. VFB(S) is a setting value for FB voltage.
*4. Power MOS FET ON resistance largely varies depending on the VOUT voltage.
*5. This is when the VOUT voltage startups from the STU release voltage or more. The soft-start time largely varies
depending on the load current and the input voltage when the S-8363 Series startups from the STU release voltage
or less, because the S-8363 Series once enters the start-up mode. Refer to “ 2. Low voltage start-up” for STU
release voltage.
 External Parts List When Measuring Electrical Characteristics
Table 6
Element name
Inductor
Diode
Input capacitor
Output capacitor
FB pin capacitor
Output voltage setting resistor 1
Output voltage setting resistor 2
6
Symbol
L
SD
CIN
COUT
CFB
RFB1
RFB2
External Parts List
Constants
2.2 μH
－
1 μF
10 μF
47 pF
68 kΩ
15 kΩ
Manufacturer
TDK Corporation
TOSHIBA CORPORATION
TAIYO YUDEN Co., Ltd.
TAIYO YUDEN Co., Ltd.
TAIYO YUDEN Co., Ltd.
ROHM Co., Ltd.
ROHM Co., Ltd.
Part number
VLF302510
CRS08
EMK107B7105KA
LMK212BJ106KD
UMK105CH470JV
MCR03 series
MCR03 series
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Test Circuits
1.
A
A
VIN
COUT
VOUT
CONT
FB
CIN
ON/OFF
A
S-8363
Series
A
A
VSS
Figure 5
2.
L
VIN
CIN
ON/OFF
VOUT
SD
CONT
VOUT
S-8363
Series
RFB1
CFB
COUT
FB
V
↓
IOUT
RFB2
VSS
Figure 6
3.
VIN
ON/OFF
CONT
VOUT
S-8363
COUT
FB
Series
COUT
CIN
VSS
Figure 7
7
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Operation
1. Switching control method
The S-8363 Series switching regulator automatically switches between the pulse width modulation method (PWM)
and pulse frequency modulation method (PFM) according to the load current.
A low ripple power can be supplied by operating on PWM control for which the pulse width changes up to 88% in
the range where the output load current is large.
The S-8363 Series operates on PFM control when the output load current is small and the pulses are skipped
according to the amount of the load current. Therefore, the oscillation circuit intermittently oscillates, reducing the
self-current consumption. This prevents decrease in efficiency when the output load current is small. The ripple
voltage during the PFM control is very small, so that the S-8363 Series realizes high efficiency and the low-noise
power supply.
The point at which PWM control switches to PFM control varies depending on the external element (inductor, diode,
etc.), input voltage value, and output voltage value, and this method achieves high efficiency in the output load
current of about 100 μA.
8
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
2. Low voltage start-up
2. 1
Start-up circuit
The S-8363 Series can startup from 0.9 V. When the VOUT voltage at ON / OFF = “H” does not reach the STU
release voltage, the start-up circuit starts the operation and outputs the fixed duty pulse to the CONT pin. By
this, the VOUT voltage starts step-up. After that, the VOUT voltage reaches the STU release voltage and the STU
mode circuit is set in STU release condition, therefore, the switching control circuit starts stable operation due
to the soft-start function. Simultaneously, the start-up circuit is set in disable condition, so that the S-8363
Series prevents excessive current consumption.
2. 2
Start-up mode (STU mode) circuit
The STU mode circuit monitors the VOUT voltage, and switches the operation modes between start-up period
and normal control period of the switching control circuit. The STU release voltage is internally fixed at 1.4 V
(typ.), and has hysteresis of approx. 0.15 V. When the VOUT voltage decreases to 1.25 V (typ.) from release
condition, the STU mode circuit is set in the STU detection condition, shifting to the start-up period. Several μs
to several ten μs is taken to shift from STU release to PWM release. During this the step-up operation is not
performed, therefore, the VOUT voltage may largely decrease depending on the size of load.
During applying ON / OFF = “L”, the STU mode circuit is set in disable condition, so that the S-8363 Series
prevents excessive current consumption.
L = 2.2 μH
SD
VOUT
VOUT
CONT
VD
STU Mode Circuit
COUT
10 μF
Load
Switching
Control Circuit
VIN
VIN
MUX
Start-up
Circuit
VSS
Figure 8
Start-up Circuit
Switching delay
STU release
STU detection
Output voltage
(VOUT)
CONT voltage
(VCONT)
Start-up period
PWM control period
Time [s]
Figure 9
Start-up Sequence
9
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
2. 3
Schottky barrier diode
A schottky barrier diode (SD) is necessary to operate the S-8363 Series. The VOUT pin also works as the
power supply pin. The voltage applied on the VOUT pin when ON / OFF = “L” is VIN − VD. VD is forward voltage
for step-down of SD, and largely varies depending on the forward current If of SD and ambient temperature, but
Vd is approx. 0.2 V to 0.5 V.
When the S-8363 Series startups from 0.9 V, use a SD with specially low VD. When using CRS08 for the
S-8363 Series, start-up is guaranteed when Ta = +25°C and a load current of 1 mA.
Satisfy the following conditions when using other SDs.
• Low forward voltage (VD)
• High switching speed
• Reverse withstand voltage of VOUT + spike voltage or more
• Rated current of IPK or more
Table 7
Typical Schottky Diodes
Manufacturer
TOSHIBA CORPORATION
ROHM Co., Ltd.
Remark
Name
CRS02
CRS08
RB161M-20TR
RB051LA-40TR
RB070M-30TR
RB161SS-20T2R
Generally, in diodes with low forward volage VD, reverse leakage current Ir tends to increases.
Especially, increase of Ir in high temperature is significant. To prevent decrease in efficiency, choose a
diode with low Ir when low voltage start-up is unnecessary.
10
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
3. Soft-start function
The S-8363 Series has the built-in soft-start circuit. When power-on (connecting ON / OFF to VIN) or after
start-up at ON / OFF = “H”, the output voltage (VOUT) gradually rises, suppressing rush current and overshoot of
the output voltage. In the S-8363 Series, the soft-start time (tss) is from start-up to the time to reach 90% of the
VOUT output voltage setting value (VOUT(S)). A reference voltage adjustment method is adopted as the soft-start
method, the reference voltage gradually rises from 0 V simultaneously with start of the soft-start. The soft-start
circuit has two operation modes which is selected according to the VOUT voltage at start-up.
3.1
VOUT voltage at start-up > STU release voltage
The soft-start starts when the reference voltage gradually rises after ON / OFF = “H”.
Input voltage
(VIN)
0V
Soft-start time (tss)
VOUT × 0.90
STU release
Output voltage
(VOUT)
0V
Reference voltage
from
0V
error amplifier
ON/OFF
voltage 0 V
Soft-start period
Time [s]
Figure 10
11
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
3. 2
VOUT voltage at start-up < STU release voltage
After ON / OFF =“H”, step-up starts by the start-up operation. When the VOUT voltage reaches the STU release
voltage, the soft-start starts.
Since the length of the start-up period largely varies depending on the input voltage, load current, external parts
and ambient temperature, the soft-start time varies according to them. Perform sufficient evaluation with actual
application.
Input voltage
(VIN)
0V
Soft-start time (tss)
Output voltage
(VOUT)
VOUT × 0.90
STU release
Reference voltage
from
0V
error amplifier
Start-up period
0V
ON/OFF
voltage
Soft-start period
0V
Time [s]
Figure 11
12
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
3. 3
Condition of performing soft-start again
The condition to reset after the reference voltage once rises (reference voltage from error amplifier = 0 V) is to set
the ON / OFF pin voltage to “L”. Setting ON / OFF = “H” starts soft-start again. When the VOUT voltage drops and
decreases more than the STU detection voltage by an overload, the soft-start circuit shifts to the start-up period.
When the VOUT voltage is restored by releasing overload, the soft-start function is performed.
If the VOUT voltage is not decreased less than the STU detection voltage, the soft-start function is not performed
when restoration.
VOUT(S)
Output voltage(VOUT)
STU release
STU detection
0V
Reference
voltage from
error amplifier 0 V
Load current
(IOUT)
0A
ON/OFF
voltage
0V
<4>
<1>
<2>
<3>
<4>
<1>
<2>
<1> Start-up period
<2> Soft-start period
<3> Normal operation period
<4> Reset period
Figure 12
<3>
<1>
<2>
Time [s]
Reset Condition for Soft-Start
13
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
4. Power-off pin
This pin stops or starts step-up operations.
When the ON / OFF pin is set to the low level, the internal driver of the CONT pin is turned off and all internal circuits
stop substantially reducing the current consumption.
The ON / OFF pin is set up as shown in Figure 13 and is internally pulled down by using the depression transistor,
so all circuits stop even if this pin is floating. Do not apply a voltage of between 0.25 V and 0.75 V to
the ON / OFF pin because applying such a voltage increases the current consumption. If the ON / OFF pin is not used,
connect it to the VIN pin.
Table 8
CR oscillation
circuit
Operates
Stops
ON/OFF pin
“H”
“L”
VIN
Output voltage
Set value
VIN − VD
VIN
ON/OFF
VSS
Figure 13
5. Current limit circuit
A current limit circuit is built in the S-8363 Series.
The current limit circuit monitors the current that flows in the Nch power MOS FET and limits current in order to
prevent thermal destruction of the IC due to an overload or magnetic saturation of the inductor.
When a current exceeding the current limit detection value flows in the Nch power MOS FET, the current limit
circuit operates and turns off the Nch power MOS FET since the current limit detection until one clock of the
oscillator ends. The Nch power MOS FET is turned on in the next clock and the current limit circuit resumes
current detection operation. If the value of the current that flows in the Nch power MOS FET remains the current
limit detection value or more, the current limit circuit functions again and the same operation is repeated. Once
the value of the current that flows in the Nch power MOS FET is lowered up to the specified value, the normal
operation status restores.
The current limit detection value is fixed to 1.1 A (typ.) in the IC. However, under the condition that ON duty is
small, between the detection delay time of the current limit circuit and the ON time of the Nch power MOS FET,
the difference is small. Therefore, the current value which is actually limited is increased. Usually, when the
difference between the VIN pin and VOUT pin is small, on duty is decreased and the limited current value is
increased.
14
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Operation Principles
The S-8363 Series is a step-up switching regulator. Figure 14 shows the basic circuit diagram.
Step-up switching regulators start current supply by the input voltage (VIN) when the Nch power MOS FET is turned
on and holds energy in the inductor at the same time. When the Nch power MOS FET is turned off, the CONT pin
voltage is stepped up to discharge the energy held in the inductor and the current is discharged to VOUT through the
diode. When the discharged current is stored in COUT, a voltage is generated, and the potential of VOUT increases
until the voltage of the FB pin reaches the same potential as the internal reference voltage.
For the PWM control method, the switching frequency (fOSC) is fixed and the VOUT voltage is held constant
according to the ratio of the ON time and OFF time (ON duty) of the Nch power MOS FET in each period.
In the PWM control method, the VOUT voltage is held constant by controlling the ON time.
In the PFM control method, the Nch power MOS FET is turned on by fixed duty. When energy is discharged to VOUT
once and the VOUT potential exceeds the set value, the Nch power MOS FET stays in the off status until VOUT
decreases to the set value or less due to the load discharge. Time VOUT decreases to the set value or less depends
on the amount of load current, so, the switching frequency varies depending on this current.
L
I2
SD
VIN
IOUT
VOUT
I1
CONT
Nch power
MOS FET
FB
VSS
Figure 14
COUT
RL
Basic Circuit of Step-up Switching Regulator
The ON duty in the current continuous mode can be calculated by using the equation below. Use the S-8363 Series
in the range where the ON duty is less than the maximum duty.
The maximum duty is 88% (typ.).
ON duty =
(1 − V
VIN
OUT + VD
*1
) × 100 [%]
*1. VD : Forward voltage of diode
15
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
1. Continuous current mode
The following explains the current that flows into the inductor when the step-up operation stabilizes in a certain
status and IOUT is sufficiently large.
When the Nch power MOS FET is turned on, current (I1) flows in the direction shown in Figure 14. The inductor
current (IL) at this time gradually increases in proportion with the ON time (tON) of the Nch power MOS FET, as
shown in Figure 15.
Current change of inductor within tON :
ΔIL(ON) = IL max. − IL min.
VIN
= L × tON
When the Nch power MOS FET is turned off, the voltage of the CONT pin is stepped up to VOUT + VD and the
voltage on both ends of the inductor becomes VOUT + VD − VIN. However, it is assumed here that VOUT >> VD and VD
is ignored.
Current change of inductor within tOFF :
VOUT − VIN
ΔIL(OFF) =
× tOFF
L
The input power equals the output power in an ideal situation where there is no loss by components.
IIN(AV) :
PIN = POUT
IIN(AV) × VIN = IOUT × VOUT
VOUT
× IOUT ........................ (1)
∴IIN(AV) = V
IN
The current that flows in the inductor consists of a ripple current that changes due to variation over time and a
direct current.
From Figure 15 :
IIN(AV) :
ΔIL
IIN(AV) = IIN(DC) + 2
VOUT − VIN
= IIN(DC) +
× tOFF
2×L
VIN
= IIN(DC) +
× tON ............... (2)
2×L
Above, the continuous mode is the operation mode when IIN(DC) > 0 as shown in Figure 15 and the inductor current
continuously flows.
While the output current (IOUT) continues to decrease, IIN(DC) reaches 0 as shown in Figure 16. This point is the
critical point of the continuous mode.
As shown in equations (1) and (2), the direct current component (IIN(DC)) depends on IOUT.
IOUT(0) when IIN(DC) reaches 0 (critical point) :
tON × VIN2
IOUT(0) =
2 × L × VOUT
When the output current decreases below IOUT(0), the current flowing in the inductor stops flowing in the tOFF period
as shown in Figure 17. This is the discontinuous mode.
16
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
IL
IL max.
IIN(AV)
IL min.
IIN(DC)
t
tON
tOFF
t = 1 / fOSC
Figure 15
Continuous Mode (Current Cycle of Inductor Current IL)
IL
IL max.
IL min.
t
tON
tOFF
t = 1 / fOSC
Figure 16
Critical Point (Current Cycle of Inductor Current IL)
IL
IL max.
IL min.
t
tON
tOFF
t = 1 / fOSC
Figure 17
Discontinuous Mode (Current Cycle of Inductor Current IL)
17
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 External Parts Selection
1. Inductor
The recommended L value of the S-8363 Series is 2.2 μH.
Caution When selecting an inductor, be careful about its allowable current. If a current exceeding the
allowable current flows through the inductor, magnetic saturation occurs, substantially lowering
the efficiency and destroying ICs due to large current. Therefore, select an inductor such that IPK
does not exceed the allowable current. The following equations express IPK in the ideal statuses
in the discontinuous and continuous modes :
2 × IOUT × (VOUT + VD*2 − VIN)
fOSC*1 × L
*2
VOUT + VD
(VOUT + VD*2 − VIN) × VIN
×
I
IPK =
OUT +
VIN
2 × (VOUT + VD*2) × fOSC*1 × L
IPK =
*1.
*2.
(Discontinuous mode)
(Continuous mode)
fOSC : oscillation frequency
VD is the forward voltage of a diode. The reference value is 0.4 V.
However, current exceeding the above equation flows because conditions are practically not ideal.
Perform sufficient evaluation with actual application.
Table 9
Manufacturer
TDK Corporation
Name
Typical Inductors
Size (L × W × H）[mm]
L value
Direct resistor Rated current
VLF302510-2R2M
2.2 μH
0.084 Ω max.
1.23 A max.
3.0 × 2.5 × 1.0
VLS3010T-2R2M
2.2 μH
0.116 Ω max.
1.2 A max.
3.0 × 3.0 × 1.0
VLS201610E
2.2 μH
0.276 Ω max.
0.94 A max.
2.0 × 1.6 × 0.95
MLP2012S2R2M
2.2 μH
0.300 Ω max.
0.8 A max.
2.0 × 1.25 × 1.0
Coilcraft, Inc
LPS3010-222ML
2.2 μH
0.220 Ω max.
1.3 A max.
3.0 × 3.0 × 1.0
Murata Manufacturing
LQM2HPN2R2MG0
2.2 μH
0.080 Ω±25%
1.3 A max.
2.5 × 2.0 × 1.0
Co., Ltd.
TAIYO YUDEN Co., Ltd.
18
LQH3NPN2R2NG0
2.2 μH
0.140 Ω±20%
1.25 A max.
2.7 × 3.0 × 1.0
NR3010T2R2M
2.2 μH
0.114 Ω max.
1.1 A max.
3.0 × 3.0 ×1.0
NR4010T2R2N
2.2 μH
0.180 Ω max.
1.15 A max.
4.0 × 4.0 ×1.0
BRL2518T2R2M
2.2 μH
0.1755 Ω max.
0.85 A max.
2.5 × 1.8 × 1.2
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
2. Diode
Use an externally mounted that meets the following conditions.
• Low forward voltage (Schottky barrier diode or similar types)
• High switching speed
• Reverse withstand voltage of VOUT + spike voltage or more
• Rated current of IPK or more
3. Input capacitor (CIN) and output capacitor (COUT)
To improve efficiency, an input capacitor (CIN) lowers the power supply impedance and averages the input current.
Select CIN according to the impedance of the power supply used. The recommended capacitance is 1 μF or more
for the S-8363 Series.
An output capacitor (COUT), which is used to smooth the output voltage, requires a capacitance larger than that of
the step-down type because the current is intermittently supplied from the input to the output side in the step-up
type. When the output voltage is low or the load current is large, enlarging an output capacitance value is required.
Moreover, when the output voltage is high, connecting a 0.1 μF ceramic capacitor in parallel is required. Mount
near a VOUT pin as possible.
The indication of an output capacitor to the setting value of VOUT voltage is shown in the table 10. Perform thorough
evaluation using an actual application to set the constant when selecting parts.
A ceramic capacitor can be used for both the input and output.
Table 10
Recommended Output Capacitance
VOUT voltage
Output capacitor (COUT)
< 2.5 V
10 μF × 2
2.5 V to 4.0 V
10 μF
4.0 V <
10 μF + 0.1 μF
19
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
4. Output voltage setting resistors (RFB1, RFB2), capacitor for phase compensation (CFB)
For the S-8363 Series, VOUT can be set to any value by using external divider resistors. Connect the divider
resistors between the VOUT and VSS pins.
Because VFB = 0.6 V typ., VOUT can be calculated by using the following equation :
VOUT =
RFB1 + RFB2
× 0.6
RFB2
Connect divider resistors RFB1 and RFB2 as close to the IC as possible to minimize the effects of noise. If noise has
an effect, adjust the values of RFB1 and RFB2 so that RFB1 + RFB2 < 100 kΩ.
CFB, which is connected in parallel with RFB1, is a capacitor for phase compensation.
By setting the zero point (the phase feedback) by adding capacitor CFB to output voltage setting resistor RFB1 in
parallel, the phase margin increases, improving the stability of the feedback loop. To effectively use the feedback
portion of the phase based on the zero point, define CFB by using the following equation :
CFB ≅
L × COUT
VOUT
× V
DD
3 × RFB1
This equation is only a guide.
The following explains the optimum setting.
To efficiently use the feedback portion of the phase based on the zero point, specify settings so that the phase
feeds back at the zero point frequency (fzero) of RFB1 and CFB according to the phase delay at the pole frequency
(fpole) of L and COUT. The zero point frequency is generally set slightly higher than the pole frequency.
The following equations are used to determine the pole frequency of L and COUT and the zero point frequency set
using RFB1 and CFB.
1
VDD
× V
OUT
L × COUT
1
fzero ≅
2 × π × RFB1 × CFB
fpole ≅
2×π×
The transient response can be improved by setting the zero point frequency in a lower frequency range. If, however,
the zero point frequency is set in a significantly lower range, the gain increases in the range of high frequency and
the phase margin decreases. This might result in unstable operation. Determine the proper value after sufficient
evaluation with actual application.
The typical constants based on our evaluation are shown in Table 11.
Table 11
VOUT(S) [V]
1.8
2.48
3.32
4.2
5.0
20
Example of Constant for External Parts
VIN [V]
1.2
1.2
1.8
1.8
1.8
RFB1 [kΩ]
30
47
68
90
110
RFB2 [kΩ]
15
15
15
15
15
CFB [pF]
82
68
47
39
39
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Standard Circuit
L = 2.2 μH
SD
VOUT
VOUT
CONT
VIN
ON/OFF
Oscillation
Circuit
ON/OFF
Circuit
Current
Limit Circuit
VIN
VIN
MUX
CIN
Start-up
Circuit
Internal
SLOPE
Compensation Power Supply
Σ
STU Mode
Circuit VOUT CFB
Error Amplifier
−
FB
+
+
Switching
−
Control
PWM
Circuit
Reference
Comparator Voltage
Source
RFB1 COUT COUT
0.1 μF 10 μF
RFB2
VSS
Ground point
Figure 18
Caution The above connection diagram and constant will not guarantee successful operation. Perform
thorough evaluation using an actual application to set the constants.
 Precaution
• Mount external capacitors and inductor as close as possible to the IC. Set single point ground.
• Characteristics ripple voltage and spike noise occur in IC containing switching regulators. Moreover rush current
flows at the time of a power supply injection. Because these largely depend on the inductor, the capacitor and
impedance of power supply used, perform sufficient evaluation with actual application.
• The 0.1 μF capacitor connected between the VOUT and VSS pins is a bypass capacitor. It stabilizes the power
supply in the IC when application is used with a heavy load, and thus effectively works for stable switching
regulator operation. Allocate the bypass capacitor as close to the IC as possible, prioritized over other parts.
• Although the IC contains a static electricity protection circuit, static electricity or voltage that exceeds the limit of
the protection circuit should not be applied.
• The power dissipation of the IC greatly varies depending on the size and material of the board to be connected.
Perform sufficient evaluation using an actual application before designing.
• SII Semiconductor Corporation claims no responsibility for any disputes arising out of or in connection with any
infringement by products including this IC of patents owned by a third party.
21
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Application Circuits
Application circuits are examples. They may always not guarantee successful operation.
1. External parts for application circuits
Table 12
Part
Part Name
VLF302510
VLS201610E
Inductor
MLP2012S
BRL2518T2R2M
CRS02
CRS08
RB070M-30TR
Diode
RB051LA-40TR
RB161M-20TR
RB161SS-20T2R
LMK212BJ106KD
EMK107B7105KA
Capacitor
C1608X5R0J106M
C1608X7R1C105K
* 1. DCR :
* 2. IMAX :
* 3. VF :
* 4. IF :
* 5. VR :
* 6. EDC :
22
Characteristics of External Parts
Manfuacturer
Characteristics
*1
2.2 μH, DCR = 0.084 Ω, IMAX*2 = 1.23 A,
L × W×H = 3.0 × 2.5 × 1.0 mm
2.2 μH, DCR*1 = 0.276 Ω, IMAX*2 = 0.94 A,
TDK Corporation
L × W × H = 2.0 × 1.6 × 0.95 mm
2.2 μH, DCR*1 = 0.300 Ω, IMAX*2 = 0.8 A,
L × W × H = 2.0 × 1.25 × 1.0 mm
2.2 μH, DCR*1 = 0.1755 Ω, IMAX*2 = 0.85 A,
TAIYO YUDEN Co., Ltd.
L × W × H = 2.5 × 1.8 × 1.2 mm
VF*3 = 0.4 V typ., IF*4 = 1.0 A, VR*5 = 30 V,
L × W × H = 3.5 × 1.6 × 1.08 mm
TOSHIBA CORPORATION
VF*3 = 0.32 V typ., IF*4 = 1.5 A, VR*5 = 30 V,
L × W × H = 3.5 × 1.6 × 1.08 mm
VF*3 = 0.44 V typ., IF*4 = 1.5 A, VR*5 = 30 V,
L × W × H = 3.5 × 1.6 × 0.9 mm
VF*3 = 0.35 V max., IF*4 = 3.0 A, VR*5 = 20 V,
L × W × H = 4.7 × 2.6 × 1.05 mm
ROHM Co., Ltd.
VF*3 = 0.31 V typ., IF*4 = 1.0 A, VR*5 = 20 V,
L × W × H = 3.5 × 1.6 × 0.9 mm
VF*3 = 0.42 V, IF*4 = 3.0 A, VR*5 = 20 V,
L × W × H = 1.6 × 0.8 × 0.603 mm
10 μF, EDC*6 = 10 V, X5R,
L × W × H = 2.0 × 1.25 × 0.95 mm
TAIYO YUDEN Co., Ltd.
10 μF, EDC*6 = 16 V, X7R,
L × W × H = 1.6 × 0.8 × 0.90 mm
10 μF, EDC*6 = 6.3 V, X5R,
L × W × H = 1.6 × 0.8 × 0.9 mm
TDK Corporation
1 μF, EDC*6 = 16 V, X7R,
L × W × H = 1.6 × 0.8 × 0.9 mm
DC resistance
Maximum allowable current
Forward voltage
Forward current
Reverse voltage
Rated voltage
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
2. A power supply started by 0.9 V
Following shows a power supply example which starts up by using the final voltage (0.9 V) of dry cells and its
characteristics.
L
SD
VDD
VOUT
CONT
RFB1
CIN
ON/OFF
VOUT
CFB
COUT
0.1 μF
S-8363
Series
FB
RFB2
VSS
Figure 19
Table 13
Condition
Circuit Example (For a power supply started by 0.9 V)
External Parts Examples (For a power supply started by 0.9 V)
Output
IC Product
L Product
SD Product
Voltage
Name
Name
Name
COUT Product Name
RFB1
RFB2
CFB
1
3.3 V
S-8363B
VLF302510
RB161M-20TR
LMK212BJ106KD
68 kΩ
15 kΩ
47 pF
2
3.3 V
S-8363B
VLF302510
RB051LA-40TR
LMK212BJ106KD
68 kΩ
15 kΩ
47 pF
3
3.3 V
S-8363B
VLF302510
RB070M-30TR
LMK212BJ106KD
68 kΩ
15 kΩ
47 pF
4
3.3 V
S-8363B
VLF302510
RB161SS-20T2R
LMK212BJ106KD
68 kΩ
15 kΩ
47 pF
5
3.3 V
S-8363B
VLF302510
CRS02
LMK212BJ106KD
68 kΩ
15 kΩ
47 pF
6
3.3 V
S-8363B
VLF302510
CRS08
LMK212BJ106KD
68 kΩ
15 kΩ
47 pF
Caution
The above connection will not guarantee successful operation. Perform thorough evaluation using an
actual application to set the constant.
23
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
3. Output characteristics of power supply started by 0.9 V
Following shows the (1) Load current (IOUT) vs. Operating start voltage (VST), (2) Temperature (Ta) vs. Operating
start voltage (VST), (3) Load current (IOUT) vs. Efficiency (η), (4) Load current (IOUT) vs. Output voltage (VOUT),
characteristics for conditions 1 to 6 in Table 13.
(3) Load current (IOUT) vs. Efficiency (η)
100
90
Condition 6
80
70
Condition 4
60
50
40 Condition 1
Condition 5
30
Condition
3
20
10
Condition 2
0
0.01
0.1
1
10
100
1000
IOUT [mA]
(4) Load current (IOUT) vs. Output voltage (VOUT)
3.40
3.38
Condition 4 Condition 5
3.36
3.34
Condition 1
3.32
3.30
3.28
Condition 6
3.26
Condition
3
3.24
3.22
Condition 2
3.20
0.01
0.1
1
10
100
1000
IOUT [mA]
VOUT [V]
η [%]
24
VST [V]
(2) Temperature (Ta) vs. Operating start voltage (VST)
1.1
Condition 6
1.0
Condition 3
0.9
Condition 5
0.8
0.7
Condition 2
0.6
Condition 4
0.5
Condition 1
0.4
0
25
50
75 85
−40 −25
Ta [C]
VST [V]
(1) Load current (IOUT) vs. Operating start voltage (VST)
1.80
Condition 6
1.60
1.40
Condition 5
1.20
Condition 3
1.00
0.80
Condition 1
0.60
0.40
Condition 4
0.20
Condition 2
0.00
100
1
10
IOUT [mA]
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
4. Super-small power supply
Following shows a circuit example which gives top priority to reduce the implementation area by using the small
external parts and its characteristics.
L
VDD
SD
VOUT
CONT
RFB1
CIN
ON/OFF
S-8363
Series
VOUT
CFB
COUT2
COUT1
FB
RFB2
VSS
Figure 20
Table 14
Circuit Example (For super-small power supply)
External Parts Examples (For super-small power supply)
Output
IC Product
L Product
SD Product
Voltage
Name
Name
Name
1
1.8 V
S-8363B
MLP2012S
2
3.3 V
S-8363B
3
1.8 V
4
3.3 V
5
6
Condition
Caution
COUT1
COUT2
RFB1
RFB2
CFB
RB161SS-20
C1608X5R0J106M
C1608X5R0J106M
30 kΩ
15 kΩ
82 pF
MLP2012S
RB161SS-20
LMK212BJ106KD
0.1 μF
68 kΩ
15 kΩ
47 pF
S-8363B
VLS201610E
RB161SS-20
C1608X5R0J106M
C1608X5R0J106M
30 kΩ
15 kΩ
82 pF
S-8363B
VLS201610E
RB161SS-20
LMK212BJ106KD
0.1 μF
68 kΩ
15 kΩ
47 pF
1.8 V
S-8363B
BRL2518T2R2M RB161SS-20
C1608X5R0J106M
C1608X5R0J106M
30 kΩ
15 kΩ
82 pF
3.3 V
S-8363B
BRL2518T2R2M RB161SS-20
LMK212BJ106KD
0.1 μF
68 kΩ
15 kΩ
47 pF
The above connection will not guarantee successful operation. Perform thorough evaluation using an
actual application to set the constant.
25
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
5. Output characteristics of super-small power supply
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.5 V
0.1
50
45
40
35
30
25
20
15
10
5
0
0.1
η [%]
Condition 2
100
90
80
70
60
50
40
30
20
10
0
0.01
Vr [mV]
100
1000
100
1000
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.5 V
0.01
0.1
1
10
IOUT [mA]
100
1000
VIN = 1.5 V
VIN = 1.2 V
VIN = 0.9 V
0.01
1
10
IOUT [mA]
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.4 V
VIN = 3.0 V
0.1
50
45
40
35
30
25
20
15
10
5
0
1
10
IOUT [mA]
100
1000
100
1000
VIN = 3.0 V
VIN = 2.4 V
VIN = 1.8 V
VIN = 1.2 V
0.01
26
1
10
IOUT [mA]
VOUT [V]
Vr [mV]
η [%]
Condition 1
100
90
80
70
60
50
40
30
20
10
0
0.01
VOUT [V]
Following shows the output current (IOUT) vs. efficiency (η), output current (IOUT) vs. output voltage (VOUT), and
output current (IOUT) vs. ripple voltage (Vr) characteristics for conditions 1 to 6 in Table 14.
0.1
1
10
IOUT [mA]
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
VIN = 3.0 V
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.4 V
0.01
0.1
1
10
IOUT [mA]
100
1000
VIN = 1.5 V
VIN = 1.2 V
VIN = 0.9 V
0.1
50
45
40
35
30
25
20
15
10
5
0
100
1000
100
1000
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.5 V
0.01
0.1
1
10
IOUT [mA]
100
1000
VIN = 1.5 V
VIN = 1.2 V
VIN = 0.9 V
0.01
0.1
η [%]
Condition 4
100
90
80
70
60
50
40
30
20
10
0
0.01
Vr [mV]
1
10
IOUT [mA]
1
10
IOUT [mA]
VOUT [V]
Vr [mV]
η [%]
Condition 3
100
90
80
70
60
50
40
30
20
10
0
0.01
VOUT [V]
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.4 V
VIN = 3.0 V
0.1
50
45
40
35
30
25
20
15
10
5
0
1
10
IOUT [mA]
100
1000
100
1000
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
VIN = 3.0 V
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.4 V
0.01
0.1
1
10
IOUT [mA]
100
1000
VIN = 3.0 V
VIN = 2.4 V
VIN = 1.8 V
VIN = 1.2 V
0.01
0.1
1
10
IOUT [mA]
27
VIN = 1.5 V
VIN = 1.2 V
VIN = 0.9 V
0.1
50
45
40
35
30
25
20
15
10
5
0
0.1
η [%]
Condition 6
100
90
80
70
60
50
40
30
20
10
0
0.01
Vr [mV]
100
1000
100
1000
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.5 V
0.01
0.1
1
10
IOUT [mA]
100
1000
100
1000
VIN = 1.5 V
VIN = 1.2 V
VIN = 0.9 V
0.01
1
10
IOUT [mA]
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.5 V
0.1
50
45
40
35
30
25
20
15
10
5
0
1
10
IOUT [mA]
100
1000
100
1000
VIN = 2.5 V
VIN = 1.8 V
VIN = 1.2 V
VIN = 0.9 V
0.01
28
1
10
IOUT [mA]
VOUT [V]
Vr [mV]
η [%]
Condition 5
100
90
80
70
60
50
40
30
20
10
0
0.01
VOUT [V]
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
0.1
1
10
IOUT [mA]
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
VIN = 2.5 V
0.01
0.1
1
10
IOUT [mA]
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Characteristics (Typical Data)
1. Examples of Major Power Supply Dependence Characteristics (Ta = +25°C)
(1) Current consumption during operation (IIN1) vs.
Operating input voltage (VIN)
Current consumption during switching off (IIN2) vs.
Operating input voltage (VIN)
12
8
ISS1, ISS2 [μA]
IIN1, IIN2 [μA]
10
(2) Current consumption during operation (ISS1) vs.
Output voltage (VOUT)
Current consumption during switching off (ISS2) vs.
Output voltage (VOUT)
1000
900
800
700
600
ISS1
500
400
300
200
ISS2
100
0
0.0
1.0
2.0
3.0
4.0
5.0
VOUT [V]
IIN1, IIN2
6
4
2
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
ISSS [μA]
(3) Current consumption during power-off (ISSS) vs. Operating input voltage (VIN), Output voltage (VOUT)
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN, VOUT [V]
4.5
5.0
(7) Soft-start time (tSS) vs. Output voltage (VOUT)
(6) Maximum duty ratio (MaxDuty) vs.
Output voltage (VOUT)
100
1.5
95
1.4
90
1.3
tSS [ms]
MaxDuty [%]
(5) Start-up oscillation frequency (fST) vs.
Operating input voltage (VIN)
500
450
400
350
300
250
200
150
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
fST [kHz]
fosc [MHz]
(4) Oscillation frequency (fOSC) vs.
Output voltage (VOUT)
1.38
1.34
1.30
1.26
1.22
1.18
1.14
1.10
1.06
1.02
1.5 2.0 2.5 3.0 3.5 4.0
VOUT [V]
85
80
1.2
1.1
75
1.0
70
0.9
1.5
2.0
2.5
3.0 3.5
VOUT [V]
4.0
4.5
5.0
1.5
2.0
2.5
3.0 3.5
VOUT [V]
4.0
4.5
5.0
29
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
VOUT = 5.0 V
5
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
ILIM [mA]
(10) Limited current (ILIM) vs.
Operating input voltage (VIN)
1600
VOUT = 1.8 V
1400
1200
1000
800
600
VOUT = 5.0 V
VOUT = 3.32 V
400
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(11) Maximum load current (IOUTMAX) vs.
Operating input voltage (VIN)
1000
900
VOUT = 3.32 V
800
700
VOUT = 1.8 V
600
500
400
300
VOUT = 5.0 V
200
100
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
(13) High level input voltage (VSH) vs.
Operating input voltage (VIN)
0.8
0.4
0.7
0.3
0.6
VSH [V]
ILSW [μA]
(12) Power MOS FET leakage current (ILSW) vs.
Output voltage (VOUT)
0.5
IPFM [mA]
10
(9) Output current at PWM / PFM switching (IPFM) vs.
Operating input voltage (VIN)
70
VOUT = 5.0 V
60
50
VOUT = 3.32 V
40
VOUT = 1.8 V
30
20
10
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
IOUTMAX [mA]
PFMDuty [%]
(8) PWM / PFM switching duty ratio (PFMDuty) vs.
Operating input voltage (VIN)
25
VOUT = 1.8 V
20
VOUT = 3.32 V
15
0.2
0.1
0.5
0.4
0.0
0.3
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
VOUT [V]
0.63
0.8
0.62
0.7
0.61
0.6
0.5
0.60
0.59
0.4
0.58
0.3
0.57
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
30
(15) FB voltage (VFB) vs. Output voltage (VOUT)
VFB [V]
VSL [V]
(14) Low level input voltage (VSL) vs.
Operating input voltage (VIN)
0.9
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VIN [V]
1.5
2.0
2.5
3.0 3.5
VOUT [V]
4.0
4.5
5.0
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
(2) Current consumption during operation (ISS1) vs.
Temperature (Ta)
1000
900
800
VOUT = 5.0 V
700
600
VOUT = 3.3 V
500
400
VOUT = 1.8 V
300
200
100
0
0
25
50
75 85
−40 −25
Ta [C]
(3) Current consumption during switching off (IIN2) vs.
Temperature (Ta)
10.0
9.0
8.0
7.0
6.0
5.0
VIN = 0.9 V
4.0
VIN = 1.8 V
3.0
VIN = 4.2 V
2.0
VIN = 4.5 V
1.0
0.0
0
25
50
75 85
−40 −25
Ta [C]
(4) Current consumption during switching off (ISS2) vs.
Temperature (Ta)
200
180
160
140
120
100
VOUT = 1.8 V
80
60
VOUT = 3.3 V
40
VOUT = 5.0 V
20
0
0
25
50
75 85
−40 −25
Ta [C]
ISS2 [μA]
ISS1 [μA]
(1) Current consumption during operation (IIN1) vs.
Temperature (Ta)
10.0
9.0
8.0
7.0
6.0
5.0
VIN = 0.9 V
4.0
VIN = 1.8 V
3.0
VIN = 4.2 V
2.0
VIN = 4.5 V
1.0
0.0
0
25
50
75 85
−40 −25
Ta [C]
IIN2 [μA]
IIN1 [μA]
2. Examples of Major Temperature Characteristics (Ta = −40 to +85°C)
ISSS [μA]
(5) Current consumption during power-off (ISSS) vs. Temperature (Ta)
1.0
0.9
0.8
0.7
0.6
VIN = VOUT = 4.5 V
0.5
0.4
0.3
0.2
0.1
0.0
0
25
50
75 85
−40 −25
Ta [C]
(7) Start-up oscillation frequency (fST) vs. Temperature (Ta)
500
450
400
350
VIN = 0.9 V
300
250
200
150
100
0
25
50
75 85
−40 −25
Ta [C]
fST [kHz]
fosc [MHz]
(6) Oscillation frequency (fOSC) vs. Temperature (Ta)
1.38
1.34
1.30
1.26
1.22
1.18
1.14
VOUT = 1.8 V
VOUT = 3.3 V
1.10
1.06
VOUT = 5.0 V
1.02
0
25
50
75 85
−40 −25
Ta [C]
31
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
90
85
VOUT = 1.8 V
VOUT = 3.3 V
VOUT = 5.0 V
80
75
−40 −25
0
25
Ta [C]
50
75 85
25
20
VOUT = 5.0 V, VIN = 3.0 V
15
10
VOUT = 1.8 V, VIN = 1.2 V
VOUT = 3.32 V, VIN = 1.8 V
5
0
−40 −25
0
25
Ta [C]
50
ILIM [mA]
1400
1200
1000
800
VOUT = 3.32 V, VIN = 1.8 V
VOUT = 1.8 V, VIN = 1.2 V
600
−40 −25
0
25
Ta [C]
50
75 85
ILSW [μA]
(14) Power MOS FET leakage current (ILSW) vs.
Temperature (Ta)
0.5
VOUT = 1.8 V
0.4
0.3
VOUT = 3.3 V
0.2
VOUT = 5.0 V
0.1
0.0
−0.1
−0.2
−0.3
−0.4
−0.5
0
25
50
75 85
−40 −25
Ta [C]
32
15
10
5
75 85
VOUT = 5.0 V, VIN = 3.0 V
VOUT = 5.0 V, VIN = 3.0 V
VOUT = 3.32 V, VIN = 1.8 V
VOUT = 1.8 V, VIN = 1.2 V
20
0
(12) Limited current (ILIM) vs.
Temperature (Ta)
1600
400
(11) Output current at PWM / PFM switching (IPFM) vs.
Temperature (Ta)
30
IPFM [mA]
PFMDuty [%]
(10) PWM / PFM switching duty ratio (PFMDuty) vs.
Temperature (Ta)
25
−40 −25
0
25
Ta [C]
50
(13) Maximum load current (IOUTMAX) vs.
Temperature (Ta)
1000
900
800
VOUT = 5.0 V, VIN = 3.0 V
700
VOUT = 3.32 V, VIN = 1.8 V
600
500
400
300
200
VOUT = 1.8 V, VIN = 1.2 V
100
0
0
25
50
−40 −25
Ta [C]
75 85
IOUTMAX [mA]
70
tSS [ms]
95
(9) Soft-start time (tSS) vs. Temperature (Ta)
1.6
1.5
1.4
1.3
1.2
1.1
VOUT = 1.8 V
1.0
0.9
VOUT = 3.3 V
0.8
VOUT = 5.0 V
0.7
0.6
0
25
50
75 85
−40 −25
Ta [C]
75 85
(15) High level input voltage (VSH) vs.
Temperature (Ta)
0.60
VIN = 4.5 V
0.55
VIN = 4.2 V
0.50
VSH [V]
MaxDuty [%]
(8) Maximum duty ratio (MaxDuty) vs. Temperature (Ta)
100
0.45
VIN = 1.8 V
VIN = 0.9 V
0.40
0.35
0.30
−40 −25
0
25
Ta [C]
50
75 85
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
(17) FB voltage (VFB) vs. Temperature (Ta)
0.63
0.55
0.62
0.50
0.61
0.45
0.40
0.35
0.30
VFB [V]
VSL [V]
(16) Low level input voltage (VSL) vs Temperature (Ta)
0.60
VIN = 0.9 V
VIN = 1.8 V
VIN = 4.2 V
VIN = 4.5 V
−40 −25
0.57
0
25
Ta [C]
50
75 85
0.0
VSTU+ [V]
VST [V]
−40 −25
0
25
Ta [C]
50
75 85
1.5
0.8
0.2
VOUT = 3.3 V
(19) Start-up mode release voltage (VSTU+) vs.
Temperature (Ta)
1.6
1.0
0.4
0.59
0.58
(18) Operating start voltage (VST) vs.
Temperature (Ta)
1.2
0.6
0.60
IOUT = 10 mA
IOUT = 1 mA
IOUT = 0.1 mA
−40 −25
1.4
1.3
1.2
1.1
0
25
Ta [C]
50
75 85
−40 −25
0
25
Ta [C]
50
75 85
33
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
3. Output waveform
VOUT = 3.3 V（VIN = 1.98 V）
t [2 μs / div]
VOUT
VCONT
t [1 μs / div]
VCONT
t [1 μs / div]
VOUT [V]
VOUT
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
VCONT
t [1 μs / div]
VOUT = 5.0 V（VIN = 3.0 V）
VOUT
VCONT
t [2 μs / div]
VOUT [V]
IOUT = 10 mA
12.0
10.0
8.0
6.0
4.0
2.0
0.0
−2.0
VCONT [V]
VOUT [V]
IOUT = 1 mA
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
34
VCONT
t [1 μs / div]
VOUT [V]
VOUT
VOUT
VCONT
t [1 μs / div]
12.0
10.0
8.0
6.0
4.0
2.0
0.0
−2.0
12.0
10.0
8.0
6.0
4.0
2.0
0.0
−2.0
IOUT = 300 mA
12.0
10.0
8.0
6.0
4.0
2.0
0.0
−2.0
VCONT [V]
VOUT [V]
IOUT = 100 mA
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
3.0
VOUT
VCONT [V]
(2)
IOUT = 300 mA
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
3.0
VCONT [V]
VOUT [V]
IOUT = 100 mA
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
3.0
VCONT [V]
VCONT
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
VCONT [V]
VOUT
VOUT [V]
IOUT = 10 mA
3.8
3.7
3.6
3.5
3.4
3.3
3.2
3.1
3.0
VCONT [V]
VOUT [V]
IOUT = 1 mA
3.34
3.33
3.32
3.31
3.30
3.29
3.28
3.27
3.26
VCONT [V]
(1)
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
VOUT
VCONT
t [1 μs / div]
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
4. Examples of Transient Response Characteristics
Unless otherwise specified, the used parts are those in Table 6 External Parts List.
4.1
At power-on (VOUT(S) = 3.3 V, VIN = 0 V → 0.9 V, Ta = +25°C)
3.0
2.0
1.0
4.2
VIN
−0.8
0.2
VIN, VOUT [V]
3.2
At power-on (VOUT(S) = 3.3 V, VIN = 0 V → 2.0 V, Ta = +25°C)
(1) IOUT = 1 mA
4.0
2.0
VIN
1.0
4.3
−0.8
(2)
IOUT = 300 mA
4.0
3.0
VOUT
3.0
0
2.0
1.2
2.2
Time [μs]
VOUT
VIN
1.0
0
0.2
3.2
−0.8
0.2
1.2
2.2
Time [μs]
3.2
Power-off pin response (VOUT = 3.3 V, VIN = 0.9 V, VON/OFF = 0 V → 0.9 V, Ta = +25°C)
(1) IOUT = 1 mA
4.0
VON/OFF, VOUT [V]
1.2
2.2
Time [μs]
VIN, VOUT [V]
0
VOUT
3.0
2.0
1.0
VON/OFF
0
4.4
−0.8
0.2
1.2
2.2
Time [μs]
3.2
Power-off pin response (VOUT = 3.3 V, VIN = 2.0 V, VON/OFF = 0 V → 2.0 V, Ta = +25°C)
(1) IOUT = 1 mA
4.0
VON/OFF, VOUT [V]
VOUT
(2)
VOUT
VON/OFF, VOUT [V]
VIN, VOUT [V]
(1) IOUT = 1 mA
4.0
3.0
2.0
VON/OFF
1.0
0
−0.8
IOUT = 300 mA
4.0
2.0
VON/OFF
1.0
0
0.2
1.2
2.2
Time [μs]
3.2
VOUT
3.0
−0.8
0.2
1.2
2.2
Time [μs]
3.2
35
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
Power supply voltage fluctuations (VOUT = 3.0 V, IOUT = 100 mA, Ta = +25°C)
3.0
3.1
−100
100
200
Time [μs]
300
−100
2.0
1.0
0
100
200
Time [μs]
300
400
IOUT = 100 mA→0.1 mA
3.5
500
400
3.4
400
300
200
3.2
IOUT
−200 −100
0
100 200
Time [μs]
300
VOUT
3.3
300
200
3.2
100
3.1
0
3.0
400
IOUT
IOUT [mA]
3.3
500
100
0
−2
0
2
Time [μs]
4
6
Load fluctuations (VOUT = 3.3 V, VIN = 1.98 V, IOUT = 100 mA → 200 mA → 100 mA, Ta = +25°C)
(1) IOUT = 100 mA→200 mA
3.5
3.4
(2)
VOUT
3.3
3.2
−100
0
100
200
Time [μs]
IOUT = 200 mA→100 mA
3.5
400
3.4
300
200
IOUT
3.1
500
300
400
500
400
VOUT
3.3
300
200
3.2
100
3.1
0
3.0
IOUT
−100
100
0
0
100
200
Time [μs]
300
400
IOUT [mA]
VOUT [V]
3.0
(2)
VOUT
3.1
VOUT [V]
3.0
VIN
Load fluctuations (VOUT = 3.3 V, VIN = 1.98 V, IOUT = 0.1 mA → 100 mA → 0.1 mA, Ta = +25°C)
3.4
36
1.0
400
(1) IOUT = 0.1 mA→100 mA
3.5
4.7
4.0
3.2
3.1
VOUT [V]
4.6
0
5.0
VOUT
3.3
2.0
VOUT [V]
3.0
6.0
VIN [V]
VIN
3.2
3.0
3.4
4.0
3.3
3.0
5.0
VOUT [V]
VOUT
VIN = 2.64 V→1.98 V
3.5
VIN [V]
(2)
IOUT [mA]
VOUT [V]
3.4
6.0
IOUT [mA]
4.5
(1) VIN = 1.98 V→2.64 V
3.5
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Reference Data
Reference data is provided to determine specific external components. Therefore, the following data shows the
characteristics of the recommended external components selected for various applications.
1. External parts
Table 15 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for
External Parts (1 / 2)
Condition
1
2
3
4
5
6
7
Product Name
S-8363B
S-8363B
S-8363B
S-8363B
S-8363B
S-8363B
S-8363B
Output Voltage
1.8 V
3.3 V
5.0 V
3.3 V
3.3 V
3.3 V
3.3 V
L Product Name
VLF302510
VLF302510
VLF302510
VLF302510
VLF302510
VLF302510
VLF302510
SD Product Name
CRS08
CRS08
CRS08
CRS08
CRS08
RB070M-30TR
RB051LA-40TR
CIN
C1608X7R1C105K
EMK107B7105KA
EMK107B7105KA
C1608X7R1C105K
C1608X7R1C105K
EMK107B7105KA
EMK107B7105KA
Table 15 Efficiency vs. Output Current Characteristics and Output Voltage vs. Output Current Characteristics for
External Parts (2 / 2)
Condition
COUT1
COUT2
COUT3
RFB1
RFB2
CFB
1
C1608X5R0J106M
C1608X5R0J106M
⎯
30 kΩ
15 kΩ
82 pF
2
LMK212BJ106KD
0.1 μF
⎯
68 kΩ
15 kΩ
47 pF
3
LMK212BJ106KD
0.1 μF
⎯
110 kΩ
15 kΩ
38 pF
4
C1608X5R0J106M
C1608X5R0J106M
⎯
68 kΩ
15 kΩ
47 pF
5
C1608X5R0J106M
C1608X5R0J106M
C1608X5R0J106M
68 kΩ
15 kΩ
47 pF
6
LMK212BJ106KD
0.1 μF
⎯
68 kΩ
15 kΩ
47 pF
7
LMK212BJ106KD
0.1 μF
⎯
68 kΩ
15 kΩ
47 pF
37
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
The properties of the external parts are shown below.
Table 16
Part
Inductor
Part Name
VLF302510
CRS08
RB070M-30TR
Diode
RB051LA-40TR
RB161M-20TR
RB161SS-20T2R
LMK212BJ106KD
EMK107B7105KA
Capacitor
C1608X5R0J106M
C1608X7R1C105K
* 1. DCR :
* 2. IMAX :
* 3. VF :
* 4. IF :
* 5. VR :
* 6. EDC :
Characteristics of External Parts
Manfuacturer
Characteristics
2.2 μH, DCR*1 = 0.084 Ω, IMAX*2 = 1.23 A,
TDK Corporation
L × W×H = 3.0 × 2.5 × 1.0 mm
VF*3 = 0.32 V typ., IF*4 = 1.5 A, VR*5 = 30 V,
TOSHIBA CORPORATION
L × W × H = 3.5 × 1.6 × 1.08 mm
VF*3 = 0.44 V typ., IF*4 = 1.5 A, VR*5 = 30 V,
L × W × H = 3.5 × 1.6 × 0.9 mm
VF*3 = 0.35 V max., IF*4 = 3.0 A, VR*5 = 20 V,
L × W × H = 4.7 × 2.6 × 1.05 mm
ROHM Co., Ltd.
VF*3 = 0.31 V typ., IF*4 = 1.0 A, VR*5 = 20 V,
L × W × H = 3.5 × 1.6 × 0.9 mm
VF*3 = 0.42 V, IF*4 = 1.0 A, VR*5 = 20 V,
L × W × H = 1.6 × 0.8 × 0.603 mm
10 μF, EDC*6 = 10 V, X5R,
L × W × H = 2.0 × 1.25 × 0.95 mm
TAIYO YUDEN Co., Ltd.
10 μF, EDC*6 = 16 V, X7R,
L × W × H = 1.6 × 0.8 × 0.9 mm
10 μF, EDC*6 = 6.3 V, X5R,
L × W × H = 1.6 × 0.8 × 0.9 mm
TDK Corporation
1 μF, EDC*6 = 16 V, X7R,
L × W × H = 1.6 × 0.8 × 0.9 mm
DC resistance
Maximum allowable current
Forward voltage
Forward current
Reverse voltage
Rated voltage
Caution The values shown in the characteristics column of Table 16 above are based on the materials provided
by each manufacture. However, consider the characteristics of the original materials when using the
above products.
38
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
2. Output Current (IOUT) vs. Efficiency (η) Characteristics, Output Current (IOUT) vs. Output Voltage
(VOUT) Characteristics
Following shows the actual output current (IOUT) vs. efficiency (η) and output current (IOUT) vs. output voltage (VOUT)
characteristics for conditions 1 to 7 in Table 15.
100
90
80
70
60
50
40
30
20
10
0
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.5 V
0.01
100
90
80
70
60
50
40
30
20
10
0
100
0.1
1
10
IOUT [mA]
100
VOUT [V]
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
100
90
80
70
60
50
40
30
20
10
0
0.1
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
1
10
IOUT [mA]
100
1000
VIN = 3.0 V
VIN = 2.5 V
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
0.01
1000
0.1
1
10
IOUT [mA]
100
1000
S-8363B (VOUT(S) = 5.0 V)
VIN = 4.2 V
VIN = 4.5 V
VIN = 1.8 V
VIN = 2.4 V
VIN = 3.0 V
0.01
Condition 4
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.5 V
0.01
1000
VIN = 2.5 V
VIN = 3.0 V
Condition 3
η [%]
1
10
IOUT [mA]
1.90
1.88
1.86
1.84
1.82
1.80
1.78
1.76
1.74
1.72
1.70
S-8363B (VOUT(S) = 3.3 V)
0.01
η [%]
0.1
VOUT [V]
η [%]
Condition 2
100
90
80
70
60
50
40
30
20
10
0
VOUT [V]
S-8363B (VOUT(S) = 1.8 V)
0.1
1
10
IOUT [mA]
100
5.10
5.08
5.06
5.04
5.02
5.00
4.98
4.96
4.94
4.92
4.90
VIN = 4.2 V
VIN = 4.5 V
VIN = 1.8 V
VIN = 2.4 V
VIN = 3.0 V
0.01
1000
0.1
1
10
IOUT [mA]
100
1000
S-8363B (VOUT(S) = 3.3 V)
VIN = 2.5 V
VIN = 3.0 V
VOUT [V]
η [%]
Condition 1
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
0.01
0.1
1
10
IOUT [mA]
100
1000
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
VIN = 3.0 V
VIN = 2.5 V
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
0.01
0.1
1
10
IOUT [mA]
100
1000
39
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
100
90
80
70
60
50
40
30
20
10
0
S-8363B (VOUT(S) = 3.3 V)
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
0.01
100
90
80
70
60
50
40
30
20
10
0
100
VIN = 3.0 V
VIN = 2.5 V
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
0.01
1000
VIN = 2.5 V
VIN = 3.0 V
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
Condition 7
η [%]
1
10
IOUT [mA]
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
0.1
1
10
IOUT [mA]
100
1000
S-8363B (VOUT(S) = 3.3 V)
0.01
0.1
1
10
IOUT [mA]
100
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
VIN = 3.0 V
VIN = 2.5 V
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
0.01
1000
0.1
1
10
IOUT [mA]
100
1000
S-8363B (VOUT(S) = 3.3 V)
VIN = 2.5 V
VIN = 3.0 V
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
0.01
40
0.1
VOUT [V]
η [%]
Condition 6
100
90
80
70
60
50
40
30
20
10
0
VOUT [V]
VIN = 2.5 V
VIN = 3.0 V
VOUT [V]
η [%]
Condition 5
0.1
1
10
IOUT [mA]
100
1000
3.40
3.38
3.36
3.34
3.32
3.30
3.28
3.26
3.24
3.22
3.20
VIN = 3.0 V
VIN = 2.5 V
VIN = 0.9 V
VIN = 1.2 V
VIN = 1.8 V
0.01
0.1
1
10
IOUT [mA]
100
1000
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
3. Output Current (IOUT) vs. Ripple Voltage (Vr) Characteristics
Following shows the actual output current (IOUT) vs. ripple voltage (Vr) characteristics for conditions of 1 to 7 in
Table 15.
VIN = 1.5 V
VIN = 1.2 V
VIN = 0.9 V
0.01
Vr [mV]
100
0.1
VIN = 3.0 V
VIN = 2.5 V
0.01
Condition 7
50
45
40
35
30
25
20
15
10
5
0
0.1
100
50
45
40
35
30
25
20
15
10
5
0
VIN = 3.0 V
VIN = 2.5 V
Condition 6
100
1000
100
1000
1
10
IOUT [mA]
100
1000
100
1000
100
1000
S-8363B (VOUT(S) = 3.3 V)
0.01
50
45
40
35
30
25
20
15
10
5
0
0.1
VIN = 0.9 V
VIN = 1.2 V
0.1
VIN = 1.8 V
VIN = 1.2 V
VIN = 0.9 V
1
10
IOUT [mA]
S-8363B (VOUT(S) = 3.3 V)
VIN = 3.0 V
VIN = 2.5 V
0.01
0.1
VIN = 1.8 V
VIN = 1.2 V
VIN = 0.9 V
1
10
IOUT [mA]
S-8363B (VOUT(S) = 3.3 V)
VIN = 3.0 V
VIN = 2.5 V
0.01
VIN = 1.8 V
VIN = 2.5 V
VIN = 3.0 V
0.01
1000
VIN = 1.8 V
VIN = 1.2 V
VIN = 0.9 V
1
10
IOUT [mA]
S-8363B (VOUT(S) = 3.3 V)
Condition 4
VIN = 3.0 V
VIN = 2.4 V
VIN = 1.8 V
1
10
IOUT [mA]
50
45
40
35
30
25
20
15
10
5
0
1000
S-8363B (VOUT(S) = 3.3 V)
Condition 5
50
45
40
35
30
25
20
15
10
5
0
1
10
IOUT [mA]
Vr [mV]
Vr [mV]
VIN = 4.5 V
VIN = 4.2 V
0.01
Vr [mV]
0.1
S-8363B (VOUT(S) = 5.0 V)
Condition 3
50
45
40
35
30
25
20
15
10
5
0
Condition 2
Vr [mV]
Vr [mV]
50
45
40
35
30
25
20
15
10
5
0
Vr [mV]
S-8363B (VOUT(S) = 1.8 V)
Condition 1
0.1
VIN = 1.8 V
VIN = 1.2 V
VIN = 0.9 V
1
10
IOUT [mA]
41
STEP-UP, SUPER-SMALL PACKAGE, 1.2 MHz PWM/PFM SWITCHABLE SWITCHING REGULATOR
Rev.2.0_01
S-8363 Series
 Marking Specification
(1) SNT-6A
SNT-6A
Top view
1
(1) to (3) :
(4) to (6) :
6
3
(1) (2) (3)
(4) (5) (6)
2
Product code (Refer to Product name vs. Product code)
Lot number
5
4
Product name vs. Product code
Product name
(1)
I
S-8363B-I6T1U2
Product code
(2)
(3)
9
B
(2) SOT-23-6
SOT-23-6
Top view
6
5
4
(1) to (3) :
(4) :
Product code (Refer to Product name vs. Product code)
Lot number
(1) (2) (3) (4)
1
2
3
Product name vs. Product code
Product name
S-8363B-M6T1U2
(1)
I
Product code
(2)
(3)
9
B
Remark Please select products of environmental code = U for Sn 100%, halogen-free products.
42
1.57±0.03
6
1
5
4
2
3
+0.05
0.08 -0.02
0.5
0.48±0.02
0.2±0.05
No. PG006-A-P-SD-2.0
TITLE
SNT-6A-A-PKG Dimensions
No.
PG006-A-P-SD-2.0
SCALE
UNIT
mm
SII Semiconductor Corporation
+0.1
ø1.5 -0
4.0±0.1
2.0±0.05
0.25±0.05
+0.1
1.85±0.05
5°
ø0.5 -0
4.0±0.1
0.65±0.05
3 2 1
4
5 6
Feed direction
No. PG006-A-C-SD-1.0
TITLE
SNT-6A-A-Carrier Tape
No.
PG006-A-C-SD-1.0
SCALE
UNIT
mm
SII Semiconductor Corporation
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
(60°)
(60°)
No. PG006-A-R-SD-1.0
TITLE
SNT-6A-A-Reel
No.
PG006-A-R-SD-1.0
SCALE
QTY.
5,000
UNIT
SII Semiconductor Corporation
0.52
1.36
2
0.52
0.2 0.3
1.
2.
1
(0.25 mm min. / 0.30 mm typ.)
(1.30 mm ~ 1.40 mm)
0.03 mm
SNT
1. Pay attention to the land pattern width (0.25 mm min. / 0.30 mm typ.).
2. Do not widen the land pattern to the center of the package ( 1.30 mm ~ 1.40 mm ).
Caution 1. Do not do silkscreen printing and solder printing under the mold resin of the package.
2. The thickness of the solder resist on the wire pattern under the package should be 0.03 mm
or less from the land pattern surface.
3. Match the mask aperture size and aperture position with the land pattern.
4. Refer to "SNT Package User's Guide" for details.
1.
2.
(0.25 mm min. / 0.30 mm typ.)
(1.30 mm ~ 1.40 mm)
No. PG006-A-L-SD-4.1
TITLE
SNT-6A-A
-Land Recommendation
No.
PG006-A-L-SD-4.1
SCALE
UNIT
mm
SII Semiconductor Corporation
2.9±0.2
1.9±0.2
6
0.95
5
1
4
2
3
+0.1
0.15 -0.05
0.95
0.35±0.15
No. MP006-A-P-SD-2.0
TITLE
SOT236-A-PKG Dimensions
No.
MP006-A-P-SD-2.0
SCALE
UNIT
mm
SII Semiconductor Corporation
4.0±0.1(10 pitches:40.0±0.2)
+0.1
ø1.5 -0
2.0±0.05
+0.2
ø1.0 -0
0.25±0.1
4.0±0.1
1.4±0.2
3.2±0.2
3 2 1
4 5 6
Feed direction
No. MP006-A-C-SD-3.1
TITLE
SOT236-A-Carrier Tape
MP006-A-C-SD-3.1
No.
SCALE
UNIT
mm
SII Semiconductor Corporation
12.5max.
9.0±0.3
Enlarged drawing in the central part
ø13±0.2
(60°)
(60°)
No. MP006-A-R-SD-2.1
SOT236-A-Reel
TITLE
MP006-A-R-SD-2.1
No.
SCALE
UNIT
QTY
3,000
mm
SII Semiconductor Corporation
Disclaimers (Handling Precautions)
1.
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application circuit examples, etc.) is current as of publishing date of this document and is subject to change without
notice.
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