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AAT3151B,pdf datasheet(High Ef

消耗积分:2 | 格式:rar | 大小:221 | 2010-01-30

张国厚

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The AAT3151B is a low noise, constant frequency charge pump DC/DC converter that uses a dual mode load switch (1X) and fractional (1.5X) charge pump conversion to maximize efficiency for white LED applications.The AAT3151B is capable of driving four white LEDs at a total of 120mA from a 2.7V to 5.5V input. The current sinks may be operated individually or in parallel for drivinghigher-current LEDs. A low external parts count (two1μF flying capacitors and two small 1μF capacitors at VIN and VOUT) makes the AAT3151B ideally suited for small battery-powered applications.
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