Active-Semi ACT4070
The ACT4070 is a current-mode step-down DC/DC converter that generates up to 3A output current at 400kHz switching frequency. The device utilizes Active-Semi’s proprietary ISOBCD30 processFEATURES
● 3A Output Current● Up to 95% Efficiency
● 4.5V to 30V Input Range
● 6µA Shutdown Supply Current
● 400kHz Switching Frequency
● Adjustable Output Voltage
● Cycle-by-Cycle Current Limit Protection
● Thermal Shutdown Protection
● Internal Soft Start Function
● Frequency Fold Back at Short Circuit
● Stability with Wide Range of Capacitors, Including Low ESR Ceramic Capacitors
● SOP-8/EP (Exposed Pad) Package
APPLICATIONS
● TFT LCD Monitors or Televisions and HDTV● Portable DVD Players
● Car-Powered or Battery-Powered Equipment
● Set-Top Boxes
● Telecom Power Supplies
● DSL and Cable Modems and Routers
GENERAL DESCRIPTION