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MP2303DQ Datasheet

  • MP2303DQ

  • 3A, 28V, 340KHz Synchronous Rectified Step-Down Converter

  • 14頁(yè)

  • MPS

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TM
MP2303
3A, 28V, 340KHz Synchronous Rectified
Step-Down Converter
The Future of Analog IC Technology
TM
INITIAL RELEASE 鈥?SPECIFICATIONS SUBJECT TO CHANGE
DESCRIPTION
The MP2303 is a monolithic synchronous buck
regulator. The device integrates power
MOSFETS that provide 3A continuous load
current over a wide operating input voltage of
4.75V to 28V. Current mode control provides
fast transient response and cycle-by-cycle
current limit.
An adjustable soft-start prevents inrush current
at turn-on. In shutdown mode, the supply
current drops to 1碌A(chǔ).
This device, available in 8-pin SOIC and 3x3
10-pin QFN packages, provides a very compact
system solution with minimal reliance on
external components.
FEATURES
鈥?/div>
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鈥?/div>
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鈥?/div>
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3A Output Current
Wide 4.75V to 28V Operating Input Range
Integrated Power MOSFET Switches
Output Adjustable from 0.8V to 25V
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
Thermally Enhanced 8-Pin SOIC and
3x3 QFN10 Packages
Distributed Power Systems
Pre-Regulator for Linear Regulators
Notebook Computers
APPLICATIONS
鈥?/div>
鈥?/div>
鈥?/div>
EVALUATION BOARD REFERENCE
Board Number
EV2303DN-00A
Dimensions
2.0鈥漍 x 1.5鈥漎 x 0.5鈥漐
鈥淢PS鈥?and 鈥淭he Future of Analog IC Technology鈥?are Trademarks of Monolithic
Power Systems, Inc.
TYPICAL APPLICATION
C5
10nF
BS
SS
Efficiency vs
Load Current
100
90
V
IN
= 12V
MP2303
SW
GND
COMP
FB
EFFICIENCY (%)
VIN
4.75V-28V
IN
EN
80
70
60
V
IN
= 24V
C3
3.3nF
V
OUT
= 5V
0
0.5
1.0
1.5
2.0
2.5
3.0
VOUT
5V/3A
50
LOAD CURRENT (A)
MP2303_TAC01
MP2303-EC01
MP2303 Rev. 0.92
5/2/2006
www.MonolithicPower.com
MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.
漏 2006 MPS. All Rights Reserved.
1

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