MP28248

High-Efficiency, Fast-Transient, 3A, 4.2V-20V Input

Synchronous Step-down Converter

in a QFN12 (2x3mm) Package

MP28248 Rev 1.0

www.MonolithicPower.com

1

1/5/2012

MPS Proprietary Information. Patent Protected. Unauthorized Photocopy and Duplication Prohibited.

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP28248 is a fully-integrated, high-

efficiency, synchronous, step-down, switch

mode converter. It offers a very compact

solution that can achieve a 3A continuous

output current over a wide input supply range

with excellent load and line regulation. The

MP28248 operates at high efficiency over a

wide output-current load range.

Constant-On-Time control mode provides fast

transient response and eases loop stabilization.

Full protective features include short-circuit

protection, over-current protection, over-voltage

protection,

under-voltage

protection,

and

thermal shutdown.

The MP28248 requires a minimal number of

readily-available standard external components.

This device is available in a space-saving

2mmx3mm 12-pin QFN package.

FEATURES

 Wide 4.2V to 20V Operating Input Range

 3A Output Current

 Proprietary Switching-Loss Reduction

Technique

 Soft Startup/Shutdown

 Programmable Switching Frequency

 SCP, OCP, UVP, OVP, and Thermal

Shutdown

 Output Adjustable from 0.815V to 13V

 Available in a QFN12 (2mmx3mm) Package

APPLICATIONS



Networking Systems



Distributed Power Systems

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

green status, please visit MPS website under the Products, Quality

Assurance page.

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

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Vin=12V