MP1497

High-Efficiency, 3A, 16V, 500kHz

Synchronous, Step-Down Converter

MP1497 Rev. 1.05

www.MonolithicPower.com

1

12/26/2012

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

© 2012 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP1497 is a high-frequency, synchronous,

rectified, step-down switch mode converter with

built in internal power MOSFETs. It offers a

very compact solution to achieve 3A continuous

output current with excellent load and line

regulation over a wide input supply range. The

MP1497 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.

Protective

features

include

over-current

protection, thermal shutdown, and external SS

control.

The MP1497 requires a minimal number of

readily-available external components and is

available in a space-saving 8-pin TSOT23

package.

FEATURES

• Wide 4.5V-to-16V Operating Input Range

MOSFETs

• Proprietary Switching-Loss–Reduction

Technique

• High-Efficiency Synchronous Mode

Operation

• Fixed 500kHz Switching Frequency

• Can Synchronize to a 200kHz-to-2MHz

External Clock

• Externally-Programmable Soft-Start

• OCP and Hiccup

• Thermal Shutdown

• Output Adjustable from 0.8V

• Available in an 8-pin TSOT-23 Package

APPLICATIONS

• Notebook Systems and I/O Power

• Digital Set-Top Boxes

• Flat-Panel Televisions and Monitors

• Distributed Power Systems

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

MP1497

IN

EN/SYNC

VCC

SS

GND

FB

SW

BST

VIN

EN

C3

0.1

R1

R3

33k

40.2k

R2

13k

L1

C2

C4

C1

22

2

6

7

1

5

3

8

4

3.3

4.5V-16V

V/3A

C5

22