FEATURES • 1V Typical Startup Voltage • Up to 94% Efficiency • Fully Integrated Power Stage • Fixed 3.3V/5V or Adjustable Output Voltage • NanoStandbyTM Shutdown Mode • Tiny SOT23-5 Package − RoHS Compliant Package APPLICATIONS • Hand-Held Devices • One to Three Cell Battery Operated Devices • PDAs • Cellular Phones • Digital Cameras • GPS GENERAL DESCRIPTION The ACT6305 is a high efficiency synchronous step-up DC/DC converter that consumes just 17μA of quiescent supply current and is capable of delivering more than 400mA output current using only three external components. This device achieves a typical startup voltage of just 1V, making it ideal for applications operating from 1 or 2 alkaline cells. This device incorporates an internal synchronous rectifier, and achieves excellent peak efficiency of up to 94% and features a proprietary control scheme that ensures high efficiency over a wide load current range. The ACT6305 features pin-selectable output voltages of 3.3V or 5V, or it can also be set externally to any voltage between 2V and 5V. The ACT6305 is available in a tiny SOT23-5 package.
