AT741 Datasheet | IAT

Regulated 4.5V/5V Charge Pump In SOT26 Features Regulated ±4% Output Voltage Output Current: 100m A at VIN=3.1V Input Range: 2.7V to 4.5V Output Voltage Available for 4.5V and 5V 1MHz Switching Frequency Short-Circuit and Over Temperature Protection Shutdown Current: <1µA No Inductors Package :SOT-26 APPLICATION White LED Backlighting Li-Lon Battery Backup Supplies Local 3V to 5V Conversion Smart Card Readers PCMCIA Local 5V Supplies Immense Advance Tech. DESCRIPTION The AT741 is low noise, constant frequency switched capacitor voltage doubler. It produce a regulated output voltage from a 2.7V to 4.5V input with up to 100m A of output current. Low external parts count (one flying capacitor and two small bypass capacitors at VIN and VOUT) make the AT741 ideally suited for small, battery-powered applications. A new charge-pump architecture maintains constant switching frequency to zero load and reduces both output and input ripple. The AT741 has over temperature protection and...