G5656

Global Mixed-mode Technology Inc. 3A Step-down DC/DC G5656 Features „ 3A Output Current „ 0.15Ω Internal Power MOSFET Switch „ Stable with Low ESR Output Ceramic Capaci- tors „ Up to 95% Efficiency „ 25µA Shutdown Mode „ Fixed 380kHz Frequency „ Thermal Shutdown „ Cycle-by-Cycle Over Current Protection „ Wide 4.75V to 20V Operating Input Range „ Output Adjustable from 1.22V to 12V „ Available in SOP-8 (FD) Package Applications „ PC Monitors „ DSL Modems „ Distributed Power Systems „ Pre-Regulator for Linear Regulators General Description The G5656 is a monolithic step-down switch mode regulator with a built in internal power MOSFET. It achieves 3A continuous output current over a wide input supply range with excellent load and line regulation. Current mode operation provides fast transient response and eases loop stabilization. Fault condition protection includes cycle-by-cycle current limiting, output short circuit protection and thermal shutdown. In shutdown mode the regulator draws 25µA of supply current. Programmable soft-start overwrites the internal soft-start for various requirement of output power up ramp and minimizes the inrush supply current at initial startup. The G5656 requires a minimum number of readily available standard external components. It is available in a SOP-8 (FD) package. Ordering Information ORDER NUMBER G5656F11U G5656F12U Note: F1: SOP-8 (FD) 1 & 2: Bonding Code U : Tape & Reel MARKING G5656 G5656A Pin Configuration G5656F11U NC 1 8 SS IN...