G5654

Global Mixed-mode Technology Inc. 2A Step-down DC/DC G5654 Features „ 2A Output Current „ 0.18Ω 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 Package Applications „ PC Monitors „ DSL Modems „ Distributed Power Systems „ Pre-Regulator for Linear Regulators Pin Configuration General Description The G5654 is a monolithic step-down switch mode regulator with a built in internal power MOSFET. It achieves 2A 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 G5654 requires a minimum number of readily available standard external components. It is available in a SOP-8 package. Ordering Information ORDER NUMBER MARKING G5654P11U G5654 G5654P12U G5654A Note: P1: SOP-8 1: Bonding Code U : Tape & Reel TEMP. RANGE -40°C to +85°C -40°C to +...