降压芯片 A*4070YH-T A*4070BYH-T A*4065SH-T

                   High Input 2A Step Down Converter--A*4065

GENERAL D*CRIPTION
     The A*4065 is a current-mode step-down DC-DC converter that generates up to 2A output current at 200kHz switching frequency. The device utilizes Active-Semi’s proprietary ISOBCD30 process for operation with input voltage up to 28V. Consuming only 8μA in shutdown mode, the A*4065 is highly efficient with peak efficiency at 95% when in operation. Protection features include cycle-by-cycle current limit, thermal
shutdown, and frequency foldback at short circuit. The A*4065 is available in SOP-8 package and requires very few external devices for operation.

FEATUR*
 2A Output Current
 Up to 95% Efficiency
 Up to 28V Input Range
 8μA Shutdown Supply Current
 200kHz 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 *R 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