ACT4012A Rev0, 16-May-08
Wide Input 1.5A Step Down Converter
FEATURES
• 1.5A Output Current • Up to 94% Efficiency • Up...
ACT4012A Rev0, 16-May-08
Wide Input 1.5A Step Down Converter
FEATURES
1.5A Output Current Up to 94% Efficiency Up to 20V Input Range 10µA 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
APPLICATIONS
TFT LCD Monitors Portable DVDs Car-Powered or Battery-Powered Equipments S-Top Boxes Telecom Power Supplies DSL and Cable Modems and Routers Termination Supplies
GENERAL DESCRIPTION
The ACT4012A is a current-mode step-down DC/DC converter that generates up to 1.5A output 420kHz switching frequency. The device utilizes Active-Semi’s proprietary ISOBCD20 process for operation with input
voltages up to 20V.
Consuming only 10µA in shutdown mode, the ACT4012A is highly efficient with peak efficienc...