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AAT2869

Part Number	AAT2869
Manufacturer	Advanced Analogic Technologies
Description	constant-frequency charge pump DC/DC converter
Published	Nov 6, 2010
Detailed Description	PRODUCT DATASHEET AAT2869 SystemPowerTM General Description The AAT2869 is a low-noise, constant-frequency charge pump ...
Datasheet	AAT2869 PDF File

Overview

PRODUCT DATASHEET AAT2869 SystemPowerTM General Description The AAT2869 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 AAT2869 is capable of driving 4 white LEDs at a total of 124mA 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 IN and OUTCP) makes the AAT2869 ideally suited for small battery-powered applications.
The fade-in/fade-out feature makes backlight turn-on/turn-off more visual comfo...

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