ACT4060 データシートの表示（PDF） - Unspecified

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ACT4060

Wide Input 2A Step Down Converter

Unspecified 

ACT4060

Rev8, 24-Jul-07

Wide Input 2A Step Down Converter

FEATURES

 2A Output Current

 Up to 95% Efficiency

 4.75V to 20V Input Range

 8µA Shutdown Supply Current

 420kHz Switching Frequency

 Adjustable Output Voltage

 Cycle-by-Cycle Current Limit Protection

 Thermal Shutdown Protection

 Frequency FoldBack at Short Circuit

 Stability with Wide Range of Capacitors,

Including Low ESR Ceramic Capacitors

 SOP-8 Package

GENERAL DESCRIPTION

The ACT4060 is a current-mode step-down DC/DC

converter that generates up to 2A of output current

at 420kHz switching frequency. The device utilizes

Active-Semi’s proprietary ISOBCD20 process for

operation with input voltages up to 20V.

Consuming only 8μA in shutdown mode, the

ACT4060 is highly efficient with peak operating effi-

ciency at 95%. Protection features include cycle-by-

cycle current limit, thermal shutdown, and frequency

foldback at short circuit.

The ACT4060 is available in a SOP-8 package and

requires very few external devices for operation.

APPLICATIONS

 TFT LCD Monitors

 Portable DVDs

 Car-Powered or Battery-Powered Equipments

 Set-Top Boxes

 Telecom Power Supplies

 DSL and Cable Modems and Routers

 Termination Supplies

TYPICAL APPLICATION CIRCUIT

Innovative Products. Active Solutions.

-1-

www.active-semi.com

Copyright © 2006 Active-Semi, Inc.

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