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General Description

The AAT3111 ChargePump? is a MicroPower switched-capacitor voltage converter that delivers a regulated output. No external inductor is required for operation. Using three small capacitors, the AAT3111 can deliver up to 150mA to the voltage regulated output. The AAT3111 features very low quiescent current and high efficiency over a large portion of its load range making this device ideal for battery-powered applications. Furthermore, the combination of few external components and small package size keeps the total converter board area to a minimum in space restricted applications.

Features

? Step-up type voltage converter

? Input Range

? AAT3111-3.6: 1.8V to 3.6V

? AAT3111-3.3: 1.8V to 3.3V

? MicroPower consumption: 20μA

? 3.6V, 3.3V Regulated ±4 output

? 3.6V Output Current

? 100mA with VIN ≥ 3.0V

? 20mA with VIN ≥ 2.0V

? 3.3V Output Current

? 100mA with VIN ≥ 2.5V

? 20mA with VIN ≥ 1.8V

? High Frequency 750 kHz operation

? Shutdown mode draws less than 1μA

? Short-circuit/over-temperature protection

? 2kV ESD Rating

? SC70JW-8 or SOT23-6 package

Applications

? Handheld Electronics

? Digital Cameras

? PDAs

? Battery Back Up Supplies

? MP3 Players