Innovative Power

TM

- 1 -

www.active-semi.com

Copyright © 2009 Active-Semi, Inc.

FEATURES

Including Low ESR Ceramic Capacitors

APPLICATIONS

GENERAL DESCRIPTION

The ACT4060A is a current-mode step-down

DC/DC converter that provides up to 2A of output

current at 400kHz switching frequency. The device

utilizes Active-Semi’s proprietary high voltage

process for operation with input voltages up to 24V.

The ACT4060A provides fast transient response

and eases loop stabilization while providing

excellent line and load regulation. This device

features a very low ON-resistance power MOSFET

which provides peak operating efficiency up to 96%.

In shutdown mode, the ACT4060A consumes only

10μA of supply current.

This device also integrates protection features

including cycle-by-cycle current limit, thermal

shutdown and frequency fold-back at short circuit.

The ACT4060A is available in a SOP-8 package

and requires very few external devices for

operation.

TYPICAL APPLICATION CIRCUIT

ACT4060A

Rev 1, 25-Jun-09

Wide Input 2A Step Down Converter

ACT4060A

BS

IN

EN

COMP

FB

SW

G

ENABLE

Up to 24V

+

2.5V/2A