MP2303 Datasheet

IC型號(hào)：
MP2303
PDF描述：
Monolithic Power Systems [3A, 28V, 340KHz Synchronous Recti...
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芯片廠家：
MPS

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MP2303

3A, 28V, 340KHz Synchronous Rectified

Step-Down Converter

The Future of Analog IC Technology

INITIAL RELEASE 鈥?SPECIFICATIONS SUBJECT TO CHANGE

DESCRIPTION

The MP2303 is a monolithic synchronous buck

regulator. The device integrates 120m鈩?/div>

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 an 8-pin SOIC

package, provides a very compact system

solution with minimal reliance on external

components.

FEATURES

鈥?/div>

3A Output Current

Wide 4.75V to 28V Operating Input Range

Integrated 120m鈩?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 Package

Distributed Power Systems

Pre-Regulator for Linear Regulators

Notebook Computers

APPLICATIONS

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

Efficiency vs

Load Current

10nF

100

GND

COMP

= 12V

MP2303

EFFICIENCY (%)

VIN

4.75V-28V

= 24V

3.3nF

(optional)

VOUT

5V/3A

OUT

= 5V

0.5

1.0

1.5

2.0

2.5

3.0

MP2303_TAC01

LOAD CURRENT (A)

MP2303-EC01

MP2303 Rev. 0.91

3/10/2006

www.MonolithicPower.com

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

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