[ACTIVE-SEMI]

GENERAL DESCRIPTION

The ACT4012 is a current-mode step-down DC-DC converter that generates up to 2A output current at 410kHz switching frequency. The device utilizes Active-Semi’s proprietary ISOBCD20 process for operation with input voltage up to 20V.

FEATURES

2A Output Current

Up to 92 Efficiency

Up to 20V Input Range

8µA Shutdown Supply Current

410kHz 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

APPLICATIONS

TFT LCD Monitors

Portable DVDs

Car-Poweredor Battery-Powered Equipments

Set-Top Boxes

TelecomPowerSupplies

DSL and Cable Modem sand Routers

Termination Supplies