MP2363DN Monolithic Power Systems, MP2363DN Datasheet

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MP2363DN

Manufacturer Part Number
MP2363DN
Description
3A, 27V, 365khz Step-down Converter
Manufacturer
Monolithic Power Systems
Datasheet
1.MP2363DN.pdf (11 pages)

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The Future of Analog IC Technology
DESCRIPTION
The MP2363 is a non-synchronous step-down
regulator with an integrated Power MOSFET. It
achieves 3A continuous output current over a
wide input supply range with excellent load and
line regulation.
Current mode operation provides fast transient
response and eases loop stabilization.
Fault condition protection includes cycle-by-
cycle current limiting and thermal shutdown.
Adjustable soft-start reduces the stress on the
input source at turn-on. In shutdown mode, the
regulator draws 20µA of supply current.
The MP2363 requires a minimum number of
readily
complete a 3A step-down DC to DC converter
solution.
The MP2363 is available in an 8-pin SOIC
package.
EVALUATION BOARD REFERENCE
TYPICAL APPLICATION
MP2363 Rev. 1.0
6/15/2006
OPEN = AUTOMATIC
EV2363DN-00A
Board Number
4.75V to 27V
STARTUP
available
INPUT
external
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
7
8
2.0”X x 1.9”Y x 0.4”Z
EN
SS
2
GND
4
IN
Dimensions
components
MP2363
OPEN
COMP
BS
SW
© 2006 MPS. All Rights Reserved.
1
6
FB
B330A
6.8nF
www.MonolithicPower.com
3
5
10nF
to
FEATURES
•
•
•
•
•
•
•
•
•
•
•
•
APPLICATIONS
•
•
•
“MPS” and “The Future of Analog IC Technology” are Registered Trademarks of
Monolithic Power Systems, Inc.
3A Continuous Output Current, 4A Peak
Output Current
Programmable Soft-Start
100mΩ Internal Power MOSFET Switch
Stable with Low ESR Output Ceramic
Capacitors
Up to 95% Efficiency
20µA Shutdown Mode
Fixed 365KHz frequency
Thermal Shutdown
Cycle-by-Cycle Over Current Protection
Wide 4.75V to 27V Operating Input Range
Output is Adjustable From 0.92V to 21V
Under Voltage Lockout
Distributed Power Systems
Battery Chargers
Pre-Regulator for Linear Regulators
OUTPUT
2.5V
3A
100
90
80
70
60
50
Step-Down Converter
0
Efficiency Curve
V
IN
0.5 1.0 1.5 2.0 2.5 3.0 3.5
= 12V
V
LOAD CURRENT (A)
OUT
3A, 27V, 365KHz
=2.5V
MP2363
V
OUT
V
OUT
=3.3V
=5.0V
1

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MP2363DN Summary of contents

Page 1

... Output is Adjustable From 0.92V to 21V • Under Voltage Lockout components to APPLICATIONS • Distributed Power Systems • Battery Chargers • Pre-Regulator for Linear Regulators “MPS” and “The Future of Analog IC Technology” are Registered Trademarks of Monolithic Power Systems, Inc. Dimensions 10nF 1 OUTPUT MP2363 5 FB ...

Page 2

... GND 4 EXPOSED PAD ON BACKSIDE CONNECT TO PIN 4 Part Number* Package MP2363DN SOIC8N * For Tape & Reel, add suffix –Z (eg. MP2363DN–Z) For RoHS Compliant Packaging, add suffix –LF (eg. MP2363DN–LF–Z) ELECTRICAL CHARACTERISTICS V = 12V +25°C, unless otherwise noted Parameters Shutdown Supply Current ...

Page 3

PIN FUNCTIONS Pin # Name Description High-Side Gate Drive Boost Input. BS supplies the drive for the high-side N-Channel MOSFET 1 BS switch. Connect a 10nF or greater capacitor from power the high-side switch. Power Input. ...

Page 4

TYPICAL PERFORMANCE CHARACTERISTICS V = 12V 2.5V 15µ 10µ 22µ OUT Switching Frequency vs Die Temperature 400 390 380 370 360 350 340 330 320 - ...

Page 5

OPERATION The MP2363 is a current-mode step-down regulator. It regulates an input voltage between 4.75V to 27V down to an output voltage as low as 0.92V, and is able to supply load current. The MP2363 uses ...

Page 6

APPLICATION INFORMATION COMPONENT SELECTION (Refer to the Typical Application Circuit on page 10) 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 ...

Page 7

Choose a diode whose maximum reverse voltage rating is greater than the maximum input voltage, and whose current rating is greater than the maximum load current. Table 2 lists example Schottky diodes and manufacturers. Table 2—Diode Selection Guide Voltage/Current Diode ...

Page 8

Compensation Components MP2363 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 ...

Page 9

To optimize the compensation components for conditions not listed in Table 2, 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: π × ...

Page 10

TYPICAL APPLICATION CIRCUITS INPUT 4.75V to 27V OPEN = AUTOMATIC STARTUP Figure 3—MP2363 for 3.3V Output with 47µF, 6.3V Ceramic Output Capacitor INPUT 4.75V to 27V OPEN = AUTOMATIC STARTUP Figure 4—MP2363 for 5V Output with 47µF, 6.3V Ceramic Output ...

Page 11

PACKAGE INFORMATION NOTE 2 0.013(0.330) 0.020(0.508) 0.050(1.270)BSC NOTE 3 0.189(4.800) 0.197(5.000) 0.053(1.350) 0.068(1.730) NOTE: 1) Control dimension is in inches. Dimension in bracket is millimeters. 2) Exposed Pad Option (N-Package) ; 2.31mm -2.79mm x 2.79mm - 3.81mm. Recommend Solder Board ...

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