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