AAT3122 Overview
The AAT3122 is a low noise, constant frequency charge pump DC/DC converter that uses a dual mode load switch (1X) and fractional (1.5X) conversion to increase efficiency in white LED applications. With input voltages ranging from 2.7V to 5.5V, the device can produce an output current of up to 120mA. A low external parts count (two 1µF flying capacitors and two small bypass capacitors at VIN and OUT) makes the...
AAT3122 Key Features
- VIN Range: 2.7V to 5.5V
- <1µA of Shutdown Current
- 1MHz Switching Frequency
- Dual Mode 1X and 1.5X Charge Pump for Maximum
- Only Four External ponents
- Simple Serial Control (S2Cwire) Interface
- Low Noise Constant Frequency Operation
- 33% Less Input Current Than Doubler Charge Pumps
- Small Application Circuit
- Regulated Output Current
AAT3122 Applications
- VIN Range: 2.7V to 5.5V
