ACT4072

www.DataSheet4U.com ACT4072 Rev 1, 12/2006 Wide Input 2A Step Down Converter FEATURES  2A Output Current  Up to 95% Efficiency  Up to 30V Input Range  6µA Shutdown Supply Current  400kHz 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 GENERAL DESCRIPTION The ACT4072 is a current-mode step-down DC/DC converter that generates up to 2A output current at 400kHz switching frequency. The device utilizes Active-Semi’s proprietary ISOBCD30 process for operation with input voltage up to 30V. Consuming only 6µA in shutdown mode, the ACT4072 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 ci...