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AAT3123/AAT3123A/AAT3124,pdf d
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2010-01-30
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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 1μF flying capacitors and two small 1μF capacitorsat VIN and OUT) make the AAT3123/23A/24 ideally suited for small battery-powered applications.
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 1μF flying capacitors and two small 1μF capacitorsat VIN and OUT) make the AAT3123/23A/24 ideally suited for small battery-powered applications.
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