FEATURES
z 2.5A Output Current z Up to 90% Efficiency z 7V to 30V Input Range z 40µA Shutdown Supply Current z 400kHz Switching Frequency z Adjustable Output Voltage z Cycle-by-Cycle Current Limit Protection z Thermal Shutdown Protection z Frequency Foldback at Short Circuit z Stability with Wide Range of Capacitors, Including Low ESR Ceramic Capacitors z SOP8L Package TYPICAL APPLICATION z TFT LCD Monitors z Portable DVDs z Car-Powered or Battery-Powered Equipments z Set-Top Boxes z Telecom Power Supplies z DSL and Cable Modems and Routers z Termination Supplies GENERAL DESCRIPTION
Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit. PIN ASSIGNMENT (Top View) PIN DESCRIPTION
Name BS No. 1 IN 2 SW 3 G4 FB 5 COMP 6 EN 7 N/C 8 DESCRIPTION
Bootstrap. This pin acts as the positive rail for the high-side switch’s gate driver. Connect a 0.1uF capacitor between BS and SW. Input Supply. Bypass this pin to G with a low ESR capacitor.
