MP9186

20V, 6A Synchronous

Step-Down Converter

MP9186 Rev. 1.0

www.MonolithicPower.com

1

2/4/2013

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

© 2013 MPS. All Rights Reserved.

The

Future

of

Analog

IC

T

echnology

DESCRIPTION

The MP9186 is a synchronous, rectified, step-

down,

switch-mode

converter

with

internal

power MOSFETs. It offers a very compact

solution to achieve a 6A continuous output

current over a wide input supply range with

excellent load and line regulation. The MP9186

has synchronous mode operation for higher

efficiency over the output current load range.

Current-mode

operation

provides

a

fast

transient response and eases loop stabilization.

Full protection features include over-current

protection and thermal shutdown.

The MP9186 requires a minimal number of

readily-available standard external components

and is available in a space saving 3mm×3mm

14-pin QFN package.

FEATURES

•

Wide 4.5V-to-20V Operating Input Range

•

6A Output Current

•

•

Programmable Switching Frequency

•

Programmable EN Delay

•

Frequency SYNC from 300kHz to 2MHz

External Clock

•

Low Power Mode Selectable by an External

Signal

•

External Soft Start

•

OCP and Thermal Shutdown

•

Available in a 14-pin 3x3mm QFN 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

MP9186

VCC

U1

R1

2.61k

R2

10k

R

T

75k

C SS

22nF

1V/6A VOU T

VIN

VCC

EN

ON

OFF

LPM

C DEL AY

47nF

R FREQ

30.1k

EN

LPM

FREQ/SYNC

GND

SS

FB

SW

BS T

IN

FREQ/SYNC