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AAT3158

Part Number	AAT3158
Manufacturer	AAT
Description	High Efficiency 1X/1.5X/2X Charge Pump
Published	Apr 30, 2007
Detailed Description	AAT3158 High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications General Description The AAT3158 is a low noise...
Datasheet	AAT3158 PDF File

Overview

AAT3158 High Efficiency 1X/1.
5X/2X Charge Pump for White LED Applications General Description The AAT3158 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 AAT3158 is capable of driving up to four LED channels at 20mA per channel 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 1µF flying capacitors and two small 1µF capacitors at VIN and VOUT) make this part ideally suited for small, battery-powered applications.
AnalogicTech's S2Cwire™...

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