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Description:High Efficiency 1X/1.5X Fractional Charge Pump for White LED Applications
Manufacturer:Advanced Analogic Technologies
Datasheet:PDF (1.53M).
Click here to download *)

The AAT3123/23A/24 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 maximize efficiency for white LED applications. The device can be used to produce current levels up to 20mA to drive up to six LEDs from a 2.7V to 5.5V input. Outputs may be operated individually or paralleled for driving higher-current LEDs. A low external parts count (two 1F flying capacitors and two small 1F capacitors at VIN and OUT) make the AAT3123/23A/24 ideally suited for small battery-powered applications.

Click here to download AAT3123_08 Datasheet
Click here to download AAT3123_08 Datasheet
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