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 proc-

ess for operation with input voltages up to 24V.

The ACT4060A provides fast transient response

and eases loop stabilization while providing excel-

lent line and load regulation. This device features a

very low ON-resistance power MOSFET which pro-

vides peak operating efficiency up to 96%. In shut-

down mode, the ACT4060A consumes only 10μA of

supply current.

This device also integrates protection features in-

cluding cycle-by-cycle current limit, thermal shut-

down and frequency fold-back at short circuit.

The ACT4060A is available in a SOP-8 package

and requires very few external devices for opera-

tion.

TYPICAL APPLICATION CIRCUIT

ACT4060A

Rev 0, 28-Apr-09

Wide Input 2A Step Down Converter

ACT4060A

BS

IN

EN

COMP

FB

SW

G

ENABLE

Up to 24V

+

2.5V/2A