MP2303 查看數據表（PDF） - Monolithic Power Systems

零件编号

产品描述 (功能)

生产厂家

MP2303

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

Monolithic Power Systems 

TM

MP2303

3A, 28V, 340KHz Synchronous Rectified

Step-Down Converter

The Future of Analog IC Technology TM

INITIAL RELEASE – 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 1µA.

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.

EVALUATION BOARD REFERENCE

Board Number

Dimensions

EV2303DN-00A

2.0”X x 1.5”Y x 0.5”Z

FEATURES

• 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

APPLICATIONS

• Distributed Power Systems

• Pre-Regulator for Linear Regulators

• Notebook Computers

“MPS” and “The Future of Analog IC Technology” are Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

VIN

4.75V-28V

C5

10nF

BS

SS

IN

EN

MP2303

SW COMP

GND

FB

C3

3.3nF

VOUT

5V/3A

MP2303_TAC01

Efficiency vs

Load Current

100

VIN = 12V

90

VIN = 24V

80

70

60

50

0

VOUT = 5V

0.5 1.0 1.5 2.0 2.5 3.0

LOAD CURRENT (A)

MP2303-EC01

MP2303 Rev. 0.92

www.MonolithicPower.com

1

5/2/2006

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2006 MPS. All Rights Reserved.

Share Link: