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Description: High Efficiency 1X/1.5X/2X Charge Pump For White LED Applications
Manufacturer:Advanced Analogic Technologies
Datasheet:PDF (340K).
Click here to download *)

The AAT3156 is a low noise, constant frequency charge pump DC/DC converter that uses a trimode load switch (1X), fractional (1.5X), and doubling (2X) conversion to maximize efficiency for white LED applications. The AAT3156 is capable of driving six LED channels at a total of 180mA from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for driving higher-current LEDs. A low external parts count (two 1F flying capacitors and two small 1F capacitors at VIN and VOUT) make this part ideally suited for small, battery-powered applications.

Click here to download AAT3156 Datasheet
Click here to download AAT3156 Datasheet
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