MPS EV2305SDS-00A 2a, 23v synchronous rectified step-down converter Datasheet

MP2305S
2A, 23V Synchronous Rectified
Step-Down Converter
The Future of Analog IC Technology
DESCRIPTION
FEATURES
The MP2305S is a monolithic synchronous
buck regulator. The device integrates a 175mΩ
high-side MOSFET and a 115mΩ low-side
MOSFET that provide 2A continuous load
current over a wide operating input voltage of
4.75V to 23V. Current mode control provides
fast transient response and cycle-by-cycle
current limit.
•
•
•
•
•
•
•
•
•
•
An adjustable soft-start prevents inrush current
at turn-on. Shutdown mode drops the supply
current to 1μA.
This device, available in an 8-pin SOIC
package, provides a very compact system
solution with minimal reliance on external
components.
EVALUATION BOARD REFERENCE
Board Number
Dimensions
EV2305SDS-00A
2.0”X x 1.5”Y x 0.5”Z
2A Output Current
Wide 4.75V to 23V Operating Input Range
Integrated Power MOSFET Switches
Output Adjustable from 0.923V to 20V
Up to 95% Efficiency
Programmable Soft-Start
Stable with Low ESR Ceramic Output Capacitors
Fixed 340KHz Frequency
Cycle-by-Cycle Over Current Protection
Input Under Voltage Lockout
APPLICATIONS
•
•
•
•
•
Distributed Power Systems
Networking Systems
FPGA, DSP, ASIC Power Supplies
Green Electronics/ Appliances
Notebook Computers
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
TYPICAL APPLICATION
Efficiency vs.Load Current
VOUT=3.3V
100
INPUT
4.75V to 23V
90 VIN=4.75V
7
80
1
BS
3
SW
EN
MP2305S
8
SS
GND
FB
COMP
4
6
5
OUTPUT
3.3V
2A
EFFICIENCY (%)
2
IN
70
60
50
40
30
C6
20
(optional)
10
0
0.01
VIN=12V
VIN=23V
0.1
1
10
LOAD CURRENT(A)
MP2305S Rev. 1.02
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1
MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
ORDERING INFORMATION
Part Number*
Package
Top Marking
Free Air Temperature (TA)
MP2305SDS
SOIC8
M2305SDS
-40°C to +85°C
* For Tape & Reel, add suffix –Z (e.g. MP2305SDS–Z);
For RoHS compliant packaging, add suffix –LF (e.g. MP2305SDS–LF–Z)
PACKAGE REFERENCE
TOP VIEW
BS
1
8
SS
IN
2
7
EN
SW
3
6
COMP
GND
4
5
FB
ABSOLUTE MAXIMUM RATINGS (1)
Thermal Resistance
Supply Voltage VIN ........................-0.3V to +26V
Switch Voltage VSW ...................-1V to VIN +0.3V
Boost Voltage VBS ..........VSW – 0.3V to VSW + 6V
All Other Pins ..................................-0.3V to +6V
Continuous Power Dissipation (TA = +25°C) (2)
……………………………………………….1.39W
Junction Temperature ...............................150°C
Lead Temperature ....................................260°C
Storage Temperature .............. -65°C to +150°C
SOIC8..................................... 90 ...... 45... °C/W
Recommended Operating Conditions
(3)
Supply Voltage VIN .........................4.75V to 23V
Output Voltage VOUT .....................0.923V to 20V
Operating Junct. Temp. (TJ) ..........-40°C to +125°C
(4)
θJA
θJC
Notes:
1) Exceeding these ratings may damage the device.
2) The maximum allowable power dissipation is a function of the
maximum junction temperature TJ (MAX), the junction-toambient thermal resistance θJA, and the ambient temperature
TA. The maximum allowable continuous power dissipation at
any ambient temperature is calculated by PD (MAX) = (TJ
(MAX)-TA)/θJA. Exceeding the maximum allowable power
dissipation will cause excessive die temperature, and the
regulator will go into thermal shutdown. Internal thermal
shutdown circuitry protects the device from permanent
damage.
3) The device is not guaranteed to function outside of its
operating conditions.
4) Measured on JESD51-7 4-layer PCB.
MP2305S Rev. 1.02
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MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
ELECTRICAL CHARACTERISTICS
VIN = 12V, TA = +25°C, unless otherwise noted.
Parameter
Symbol Condition
Shutdown Supply Current
Supply Current
Min
VEN = 0V
VEN = 5.0V; VFB = 1.0V
Feedback Voltage
VFB
Feedback Overvoltage Threshold
Error Amplifier Voltage Gain (5)
AEA
Error Amplifier Transconductance
GEA
(5)
High-Side Switch On Resistance
Low-Side Switch On Resistance (5)
High-Side Switch Leakage Current
Upper Switch Current Limit
Lower Switch Current Limit
COMP to Current Sense
Transconductance
Oscillation Frequency
Short Circuit Oscillation Frequency
Maximum Duty Cycle
Minimum On Time (5)
EN Shutdown Threshold Voltage
EN Shutdown Threshold Voltage
Hysteresis
EN Lockout Threshold Voltage
EN Lockout Hysterisis
Input Under Voltage Lockout
Threshold
Input Under Voltage Lockout
Threshold Hysteresis
Soft-Start Current
Soft-Start Period
Thermal Shutdown (5)
4.75V ≤ VIN ≤ 23V
0.900
ΔIC = ±10μA
RDS(ON)1
RDS(ON)2
VEN = 0V, VSW = 0V
Minimum Duty Cycle
From Drain to Source
3
Max
Units
1
1.3
3.0
1.5
μA
mA
0.923
0.946
V
1.1
400
V
V/V
800
μA/V
175
115
mΩ
mΩ
μA
A
A
4.1
1.1
10
5.3
3.5
GCS
Fosc1
Fosc2
DMAX
Typ
305
VFB = 0V
VFB = 0.8V
VEN Rising
1.1
340
100
90
220
1.5
A/V
375
2.0
210
VIN Rising
VSS = 0V
CSS = 0.1μF
kHz
kHz
%
ns
V
mV
2.2
2.5
210
2.7
V
mV
3.40
3.80
4.20
V
210
mV
6
15
160
μA
ms
°C
Note:
5) Guaranteed by design, not tested.
MP2305S Rev. 1.02
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MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
PIN FUNCTIONS
Pin #
Name
1
BS
2
IN
3
SW
4
GND
5
FB
6
COMP
7
EN
8
SS
Description
High-Side Gate Drive Boost Input. BS supplies the drive for the high-side N-Channel MOSFET
switch. Connect a 0.01μF or greater capacitor from SW to BS to power the high side switch.
Power Input. IN supplies the power to the IC, as well as the step-down converter switches.
Drive IN with a 4.75V to 23V power source. Bypass IN to GND with a suitably large capacitor
to eliminate noise on the input to the IC. See Input Capacitor.
Power Switching Output. SW is the switching node that supplies power to the output. Connect
the output LC filter from SW to the output load. Note that a capacitor is required from SW to
BS to power the high-side switch.
Ground.
Feedback Input. FB senses the output voltage to regulate that voltage. Drive FB with a
resistive voltage divider from the output voltage. The feedback threshold is 0.923V. See
Setting the Output Voltage.
Compensation Node. COMP is used to compensate the regulation control loop. Connect a
series RC network from COMP to GND to compensate the regulation control loop. In some
cases, an additional capacitor from COMP to GND is required. See Compensation
Components.
Enable Input. EN is a digital input that turns the regulator on or off. Drive EN high to turn on
the regulator, drive it low to turn it off. Pull up with 100kΩ resistor for automatic startup.
Soft-Start Control Input. SS controls the soft start period. Connect a capacitor from SS to GND
to set the soft-start period. A 0.1μF capacitor sets the soft-start period to 15ms. To disable the
soft-start feature, leave SS unconnected.
MP2305S Rev. 1.02
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MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
TYPICAL PERFORMANCE CHARACTERISTICS
VIN = 12V, VO = 3.3V, L = 10µH, C1 = 10µF, C2 = 22µF, TA = +25°C, unless otherwise noted.
Efficiency vs.Load Current
70
70
60
50
VIN=12V
VIN=23V
10
VIN=8V
4.5
IPEAK_LIMIT (A)
80
EFFICIENCY (%)
90
20
5
100
80 VIN=4.75V
30
VOUT=3.3V
VOUT=5V
90
40
Current Limit vs. Duty Cycle
Efficiency vs.Load Current
VOUT=1.8V
100
60
50
VIN=12V
40
VIN=23V
30
4
3.5
3
20
10
0
0.01
0.1
1
10
0
0.01
LOAD CURRENT(A)
1
10
0
20
40
60
80
100
LOAD CURRENT(A)
Output Ripple Voltage
Output Ripple Voltage
Enable Startup
IO=2A
IO=0A
VO/AC
20mV/div.
VO/AC
20mV/div.
SW
10V/div.
SW
10V/div.
IINDUCTOR
1A/div.
2.5
0.1
IO=0A
VO
2V/div.
EN
5V/div.
SW
10V/div.
IINDUCTOR
2A/div.
IINDUCTOR
1A/div.
4ms/div.
Enable Shutdown
Enable Startup
Enable Shutdown
IO=0A
IO=2A
IO=2A
VO
2V/div.
EN
5V/div.
VO
2V/div.
EN
5V/div.
VO
2V/div.
EN
5V/div.
SW
10V/div.
SW
10V/div.
SW
10V/div.
IINDUCTOR
2A/div.
IINDUCTOR
2A/div.
IINDUCTOR
2A/div.
4ms/div.
1s/div.
MP2305S Rev. 1.02
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MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
OPERATION
The converter uses internal N-Channel
MOSFET switches to step-down the input
voltage to the regulated output voltage. Since
the high side MOSFET requires a gate voltage
greater than the input voltage, a boost capacitor
connected between SW and BS is needed to
drive the high side gate. The boost capacitor is
charged from the internal 5V rail when SW is low.
FUNCTIONAL DESCRIPTION
The MP2305S is a synchronous rectified,
current-mode, step-down regulator. It regulates
input voltages from 4.75V to 23V down to an
output voltage as low as 0.923V, and supplies
up to 2A of load current.
The MP2305S uses current-mode control to
regulate the output voltage. The output voltage
is measured at FB through a resistive voltage
divider and amplified through the internal
transconductance error amplifier. The voltage at
the COMP pin is compared to the switch current
measured internally to control the output
voltage.
When the MP2305S FB pin exceeds 20% of the
nominal regulation voltage of 0.923V, the over
voltage comparator is tripped and the COMP
pin and the SS pin are discharged to GND,
forcing the high-side switch off.
+
VOUT
CURRENT
SENSE
AMPLIFIER
OVP
1.1V
-OSCILLATOR
FB
+
340kHz
0.3V
RAMP
5V
BS
-+
--
+
0.923V
+
VIN
--
CLK
-SS
IN
+
ERROR
AMPLIFIER
S
Q
R
Q
0.175
SW
CURRENT
COMPARATOR
0.115
VOUT
COMP
--
EN
2.5V
+
GND
EN OK
1.2V
LOCKOUT
COMPARATOR
OVP
IN < 3.8V
IN
+
INTERNAL
REGULATORS
1.5V
--
SHUTDOWN
COMPARATOR
Figure 1—Functional Block Diagram
MP2305S Rev. 1.02
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MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
APPLICATIONS INFORMATION
COMPONENT SELECTION
Setting the Output Voltage
The output voltage is set using a resistive voltage
divider from the output voltage to FB pin. The
voltage divider divides the output voltage down to
the feedback voltage by the ratio:
VFB = VOUT
R2
R1 + R2
Where VFB is the feedback voltage and VOUT is
the output voltage.
larger value inductor will have a larger physical
size, higher series resistance, and/or lower
saturation current.
A good rule for determining the inductance to use
is to allow the peak-to-peak ripple current in the
inductor to be approximately 30% of the
maximum switch current limit. Also, make sure
that the peak inductor current is below the
maximum switch current limit. The inductance
value can be calculated by:
L=
Thus the output voltage is:
VOUT = 0.923 ×
R1 + R2
R2
R2 can be as high as 100kΩ, but a typical value
is 10kΩ. Using the typical value for R2, R1 is
determined by:
R1 = 10.83 × ( VOUT − 0.923 ) (kΩ)
⎛
VOUT
V
× ⎜⎜1 − OUT
f S × ΔI L ⎝
VIN
⎞
⎟⎟
⎠
Where VOUT is the output voltage, VIN is the input
voltage, fS is the switching frequency, and ΔIL is
the peak-to-peak inductor ripple current.
Choose an inductor that will not saturate under
the maximum inductor peak current. The peak
inductor current can be calculated by:
For example, for a 3.3V output voltage, R2 is
10kΩ, and R1 is 26.1kΩ.
ILP = ILOAD +
⎛
VOUT
V
× ⎜1 − OUT
2 × f S × L ⎜⎝
VIN
⎞
⎟⎟
⎠
Inductor
where ILOAD is the load current.
The inductor is required to supply constant
Table 1 lists a number of suitable inductors from
current to the output load while being driven by
various manufacturers. The choice of which style
the switched input voltage. A larger value
inductor to use mainly depends on the price vs.
inductor will result in less ripple current that will
size requirements and any EMI requirement.
result in lower output ripple voltage. However, the
Table 1—Inductor Selection Guide
Inductance (µH)
Max DCR (Ω)
Current Rating (A)
Dimensions
L x W x H (mm3)
7440650068
6.8
0.033
3.6
10x10x2.8
744066100
10
0.035
3.6
10x10x3.8
744066150
15
0.050
3.2
10x10x3.8
SLF10165T-6R8N4R33PF
6.8
0.014
4.3
SLF10165T-100M3R83PF
10
0.0185
3.8
SLF10165T-150M3R13PF
15
0.027
3.1
10x10x4.5
10x10x4.5
10x10x4.5
#B952AS-6R8N
6.8
0.035
3.1
10.4x10.4x4.8
#B892NAS-100M
10
0.0225
4.2
12.3x12.3x4.5
#B892NAS-150M
15
0.0355
3.2
12.3x12.3x4.5
Part Number
Wurth Electronics
TDK
Toko
MP2305S Rev. 1.02
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MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
Optional Schottky Diode
During the transition between high-side switch
and low-side switch, the body diode of the lowside power MOSFET conducts the inductor
current. The forward voltage of this body diode is
high. An optional Schottky diode may be
paralleled between the SW pin and GND pin to
improve overall efficiency. Table 2 lists example
Schottky diodes and their Manufacturers.
Table 2—Diode Selection Guide
Part Number
Voltage/Current
Rating
B230
SL23
30V, 2A
30V, 2A
MBRS230
30V, 2A
Vendor
Diodes, Inc.
Vishay, Inc.
International
Rectifier
Input Capacitor
The input current to the step-down converter is
discontinuous, therefore a capacitor is required to
supply the AC current to the step-down converter
while maintaining the DC input voltage. Use low
ESR capacitors for the best performance.
Ceramic capacitors are preferred, but tantalum or
low-ESR electrolytic capacitors may also suffice.
Choose X5R or X7R dielectrics when using
ceramic capacitors.
Since the input capacitor (C1) absorbs the input
switching current it requires an adequate ripple
current rating. The RMS current in the input
capacitor can be estimated by:
I C1 = ILOAD ×
VOUT ⎛⎜ VOUT ⎞⎟
× 1−
VIN ⎜⎝
VIN ⎟⎠
The worst-case condition occurs at VIN = 2VOUT,
where IC1 = ILOAD/2. For simplification, choose the
input capacitor whose RMS current rating greater
than half of the maximum load current.
The input capacitor can be electrolytic, tantalum
or ceramic. When using electrolytic or tantalum
capacitors, a small, high quality ceramic
capacitor, i.e. 0.1μF, should be placed as close
to the IC as possible. When using ceramic
capacitors, make sure that they have enough
capacitance to provide sufficient charge to
prevent excessive voltage ripple at input. The
input voltage ripple for low ESR capacitors can
be estimated by:
ΔVIN =
⎛
ILOAD
V
V
× OUT × ⎜⎜1 − OUT
C1 × fS
VIN ⎝
VIN
⎞
⎟⎟
⎠
Where C1 is the input capacitance value.
Output Capacitor
The output capacitor is required to maintain the
DC output voltage. Ceramic, tantalum, or low
ESR electrolytic capacitors are recommended.
Low ESR capacitors are preferred to keep the
output voltage ripple low. The output voltage
ripple can be estimated by:
ΔVOUT =
VOUT ⎛
V
× ⎜1 − OUT
f S × L ⎜⎝
VIN
⎞
⎞ ⎛
1
⎟
⎟⎟ × ⎜ R ESR +
⎜
⎟
8
f
C
2
×
×
S
⎠ ⎝
⎠
Where C2 is the output capacitance value and
RESR is the equivalent series resistance (ESR)
value of the output capacitor.
In the case of ceramic capacitors, the impedance
at the switching frequency is dominated by the
capacitance. The output voltage ripple is mainly
caused by the capacitance. For simplification, the
output voltage ripple can be estimated by:
ΔVOUT =
⎛
V
× ⎜⎜1 − OUT
VIN
× L × C2 ⎝
VOUT
8 × fS
2
⎞
⎟⎟
⎠
In the case of tantalum or electrolytic capacitors,
the ESR dominates the impedance at the
switching frequency. For simplification, the output
ripple can be approximated to:
ΔVOUT =
VOUT ⎛
V
× ⎜⎜1 − OUT
fS × L ⎝
VIN
⎞
⎟⎟ × R ESR
⎠
The characteristics of the output capacitor also
affect the stability of the regulation system. The
MP2305S can be optimized for a wide range of
capacitance and ESR values.
Compensation Components
MP2305S employs current mode control for easy
compensation and fast transient response. The
system stability and transient response are
controlled through the COMP pin. COMP pin is
the output of the internal transconductance error
amplifier. A series capacitor-resistor combination
sets a pole-zero combination to control the
characteristics of the control system.
MP2305S Rev. 1.02
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MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
The DC gain of the voltage feedback loop is
given by:
A VDC = R LOAD × G CS × A EA ×
VFB
VOUT
Where AVEA is the error amplifier voltage gain;
GCS is the current sense transconductance and
RLOAD is the load resistor value.
The system has two poles of importance. One is
due to the compensation capacitor (C3) and the
output resistor of the error amplifier, and the
other is due to the output capacitor and the load
resistor. These poles are located at:
fP1
GEA
=
2π × C3 × A VEA
fP2 =
1
2π × C2 × R LOAD
Where GEA is the error amplifier transconductance.
The system has one zero of importance, due to the
compensation capacitor (C3) and the compensation
resistor (R3). This zero is located at:
f Z1
1
=
2π × C3 × R3
The system may have another zero of
importance, if the output capacitor has a large
capacitance and/or a high ESR value. The zero,
due to the ESR and capacitance of the output
capacitor, is located at:
fESR =
1
2π × C2 × R ESR
In this case, a third pole set by the compensation
capacitor (C6) and the compensation resistor (R3)
is used to compensate the effect of the ESR zero
on the loop gain. This pole is located at:
fP 3 =
1
2π × C6 × R3
The goal of compensation design is to shape the
converter transfer function to get a desired loop
gain. The system crossover frequency where the
feedback loop has the unity gain is important.
Lower crossover frequencies result in slower line
and load transient responses, while higher
3. Determine if the second compensation
capacitor (C6) is required. It is required if the
crossover frequencies could cause system
instability. A good rule of thumb is to set the
crossover frequency below one-tenth of the
switching frequency.
Table 3 lists the typical values of compensation
components for some standard output voltages
with various output capacitors and inductors. The
values of the compensation components have
been optimized for fast transient responses and
good stability at given conditions.
Table 3—Compensation Values for
Output Voltage/Capacitor Combinations
Typical
VOUT
L1
C2
R3
C3
C6
1.8V
6.8uH
22μF/6.3V
Ceramic
3.3kΩ
5.6nF
None
3.3V
10μH
22μF/6.3V
Ceramic
5.6kΩ
3.3nF
None
5.0V
15μH
22μF/6.3V
Ceramic
10kΩ
2.2nF
None
12.0V
22μH
22μF/16V
Ceramic
15kΩ
1.0nF
None
To optimize the compensation components, the
following procedure can be used.
1. Choose the compensation resistor (R3) to set
the desired crossover frequency.
Determine the R3 value by the following equation:
R3 =
2π × C2 × fC VOUT 2π × C2 × 0.1 × fS VOUT
×
<
×
GEA × GCS
VFB
GEA × GCS
VFB
Where fC is the desired crossover frequency
which is typically below one tenth of the switching
frequency.
2. Choose the compensation capacitor (C3) to
achieve the desired phase margin. For
applications with typical inductor values, setting
the compensation zero, fZ1, below one-forth of the
crossover frequency provides sufficient phase
margin.
Determine the C3 value by the following equation:
C3 >
4
2π × R3 × f C
where R3 is the compensation resistor.
ESR zero of the output capacitor is located at
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MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
less than half of the switching frequency, or the
following relationship is valid:
f
1
< S
2π × C 2 × R ESR
2
In these cases, an external BST diode is
recommended from the output of the voltage
regulator to BST pin, as shown in Figure 2
External BST Diode
IN4148
BST
If this is the case, then add the second
compensation capacitor (C6) to set the pole fP3 at
the location of the ESR zero. Determine the C6
value by the equation:
C2 × R ESR
C6 =
R3
External Bootstrap Diode
An external bootstrap diode may enhance the
efficiency of the regulator, and it will be a must if
the applicable condition is:
z
VOUT=5V or 3.3V; and
z
duty cycle is high: D=
MP2305 S
SW
CBST
0.01
L
+
COUT
5V or 3.3V
Figure 2—Add Optional External Bootstrap
Diode to Enhance Efficiency
The recommended external BST diode is IN4148,
and the BST cap is 0.01µF.
VOUT
>65%
VIN
MP2305S Rev. 1.02
www.MonolithicPower.com
10/22/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
10
MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
TYPICAL APPLICATION CIRCUIT
INPUT
4.75V to 23V
2
1
IN
7
OUTPUT
1.8V
2A
BS
3
SW
EN
MP2305S
8
SS
GND
5
FB
COMP
4
6
C6
(optional)
Figure 3—MP2305S with 1.8V Output, 22µF/6.3V Ceramic Output Capacitor
C5
10nF
INPUT
8V to 23V
2
7
1
IN
BS
3
SW
EN
MP2305S
8
SS
GND
FB
COMP
4
OUTPUT
5.0V
2A
5
6
C6
(optional)
C3
2.2nF
Figure 4—MP2305S with 5.0V Output, 22µF/6.3V Ceramic Output Capacitor
MP2305S Rev. 1.02
www.MonolithicPower.com
10/22/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
11
MP2305S – 2A, 23V SYNCHRONOUS RECTIFIED, STEP-DOWN CONVERTER
PACKAGE INFORMATION
SOIC8
0.189(4.80)
0.197(5.00)
8
0.050(1.27)
0.024(0.61)
5
0.063(1.60)
0.150(3.80)
0.157(4.00)
PIN 1 ID
1
0.228(5.80)
0.244(6.20)
0.213(5.40)
4
TOP VIEW
RECOMMENDED LAND PATTERN
0.053(1.35)
0.069(1.75)
SEATING PLANE
0.004(0.10)
0.010(0.25)
0.013(0.33)
0.020(0.51)
0.0075(0.19)
0.0098(0.25)
SEE DETAIL "A"
0.050(1.27)
BSC
SIDE VIEW
FRONT VIEW
0.010(0.25)
x 45o
0.020(0.50)
GAUGE PLANE
0.010(0.25) BSC
0o-8o
0.016(0.41)
0.050(1.27)
DETAIL "A"
NOTE:
1) CONTROL DIMENSION IS IN INCHES. DIMENSION IN
BRACKET IS IN MILLIMETERS.
2) PACKAGE LENGTH DOES NOT INCLUDE MOLD FLASH,
PROTRUSIONS OR GATE BURRS.
3) PACKAGE WIDTH DOES NOT INCLUDE INTERLEAD FLASH
OR PROTRUSIONS.
4) LEAD COPLANARITY (BOTTOM OF LEADS AFTER FORMING)
SHALL BE 0.004" INCHES MAX.
5) DRAWING CONFORMS TO JEDEC MS-012, VARIATION AA.
6) DRAWING IS NOT TO SCALE.
NOTICE: The information in this document is subject to change without notice. Please contact MPS for current specifications.
Users should warrant and guarantee that third party Intellectual Property rights are not infringed upon when integrating MPS
products into any application. MPS will not assume any legal responsibility for any said applications.
MP2305S Rev. 1.02
www.MonolithicPower.com
10/22/2013
MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.
© 2013 MPS. All Rights Reserved.
12
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