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AAT3141,pdf datasheet(High Eff

消耗积分:2 | 格式:rar | 大小:221 | 2010-01-30

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The AAT3141 is a low noise, constant frequency charge pump DC/DC converter that uses a tri-mode load switch(1X), fractional (1.5X), and doubling (2X) conversion tomaximize efficiency for white LED applications. The device produces current levels up to 30mA on each of its four current source outputs to drive various arrangements of LEDs from a 2.7V to 5.5V input. Outputs 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 CP) make the AAT3141 ideally suited for small battery-powered applications.
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