MP2270

1.8A, 24V, 700kHz

Step-Down Converter

MP2270 Rev. 1.1

www.MonolithicPower.com

1

4/16/2010

MPS Proprietary Information. Unauthorized Photocopy and Duplication Prohibited.

© 2010 MPS. All Rights Reserved.

The Future of Analog IC Technology

DESCRIPTION

The MP2270 is a monolithic step-down switch

mode converter with a built-in internal power

MOSFET. It achieves 1.8A 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 MP2270 requires a minimum number of

readily available standard external components.

The MP2270 is available in a 10-pin exposed pad

MSOP package.

FEATURES

• 1.8A Continuous Output Current

• 0.3Ω Internal Power MOSFET Switch

• Stable with Low ESR Output Ceramic

Capacitors

• 0.1μA Shutdown Mode

• Fixed 700kHz Frequency

• Thermal Shutdown

• Cycle-by-Cycle Over Current Protection

• Wide 4.5V to 24V Operating Input Range

• Output Adjustable from 0.81V to 20V

• Available in a 10-pin Exposed Pad MSOP

Package

APPLICATIONS

•

Broadband Communications Equipment

•

Digital Entertainment Systems

•

Distributed Power Systems

•

Battery Charger

•

Pre-Regulator for Linear Regulators

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

Monolithic Power Systems, Inc.

TYPICAL APPLICATION

MP2270

SW

FB

BST

5

6

8

10

3

1

GND

IN

EN

3.3V

CB

10nF

D1

B230A

OFF ON