MP8676

4.5A, 42V, 420kHz Step-Down Converter

with Synchronizable Gate Driver

MP8676 Rev.1.0

www.MonolithicPower.com

1

5/7/2012

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

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP8676 is a monolithic step-down switch

mode converter with a built in internal power

MOSFET. It achieves 4.5A continuous output

current over a wide input supply range with

excellent load and line regulation.

Current mode operation provides fast transient

response and eases loop stabilization.

Fault condition protection includes cycle-by-cycle

current limiting and thermal shutdown.

The MP8676 requires a minimum number of

readily available standard external components

and is available in an 8-pin SOIC package with

exposed pad.

FEATURES

 Wide 4.5V to 42V Operating Input Range

 4.5A Continuous Output Current

 100mΩ Internal Power MOSFET Switch

 Synchronizable Gate Driver Delivers up to

95% Efficiency

 Fixed 420kHz Frequency

 Synchronizable up to 1.5MHz

 Cycle-by-Cycle Over Current Protection with

Hiccup retry

 Thermal Shutdown

 Output Adjustable from 0.8V

 Stable with Low ESR Output Ceramic

Capacitors

 Available in a Thermally Enhanced 8-Pin

SOIC Package

APPLICATIONS



Digital Set Top Boxes



Personal Video Recorders



Broadband Communications



Flat Panel Television and Monitors

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

status, please visit MPS website under Quality Assurance. “MPS” and “The

Future of Analog IC Technology” are Registered Trademarks of Monolithic

Power Systems, Inc.

TYPICAL APPLICATION

MP8676

SW

BG

FB

BST

1

4

6

5

2

GND

IN

VCC

EN/SYNC

8

3

7

3.3V

OFF ON