MP9151

20V, 4A Synchronous

Step-Down Coverter

MP9151 Rev. 1.0

www.MonolithicPower.com

1

3/20/2013

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DESCRIPTION

The MP9151 is a synchronous rectified step-

down switch mode converter with built in

internal power MOSFETs. It offers a very

compact solution to achieve 4A continuous

output current over a wide input supply range

with excellent load and line regulation. The

MP9151 has synchronous mode operation for

higher efficiency over output current load range.

Current mode operation provides fast transient

response and eases loop stabilization. Full

protection features include OCP and thermal

shut down.

The MP9151 requires a minimum number of

readily available standard external components

and is available in a space saving 2mm x 3mm

14-pin QFN package.

FEATURES

Wide 4.5V to 20V Operating Input Range

4A Output Current

Low Rds(ON) Internal Power MOSFETs

Programmable Switching Frequency from

300kHz to 1.6MHz

EN ON/OFF Control

Internal Power Save Mode

Power Good Indicator

External Soft Start

OCP and Thermal Shutdown

Available in 14-pin QFN2x3 Package

APPLICATIONS

DSL Modems

Cable Modems

Set Top Boxes

All MPS parts are lead-free and adhere to the RoHS directive. For MPS green

status, please visit MPS website under Products, Quality Assurance page.

“MPS” and “The Future of Analog IC Technology” are registered trademarks of

Monolithic Power Systems, Inc.

TYPICAL APPLICATION