ACT  -  系列元器件数据手册
ACT4060  -  Wide Input 2A Step Down Converter  -  Active Semi  -  直流-直流

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
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
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 efficiency at 95%. Protection features include cycle-bycycle 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.