MP2308

18V, 4A Synchronous

Step-Down Coverter

MP2308 Rev. 1.0

www.MonolithicPower.com

1

7/9/2012

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

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2308 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

MP2308 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 MP2308 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 4.75V to 18V Operating Input Range

 4A Output Current

 Low Rds(ON) Internal Power MOSFETs

 300kHz-2MHz Programmable Switching

Frequency

 EN ON/OFF Control

 Light Load Mode Selectable

 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

MP2308

AAM

FREQ

GND

SS

FB

SW

BST

IN

VIN

U1

3.3V

VOUT

VCC

EN

22nF

R1

31.6k

R2

10k

18.7k

4.75V to 18V

VCC

EN

FREQ

R5

10

0.001

0.01

0.1

1

10

70

75

80

85

90

95

100