High Efficiency 1.5X Fractional Charge Pump For White LED Applications

Features • VIN Range: 2.7V to 5.5V • 20mA Full-Scale Current • Simple Serial Control (S2Cwire) Interface ▪ 32-Position Logarithmic Scale with Digital Control • Low Noise Constant Frequency Operation • 33 Less Input Current Than Doubler Charge Pump • High Accuracy Brightness Matching • Smal

High Efficiency 1.5X Fractional Charge Pump For White LED Applications

General Description The AAT3194 is a low noise, constant frequency charge pump DC/DC converters that use fractional (1.5X) conversion to increase efficiency in white LED applications. The devices can be used to produce current levels up to 20mA for each output from a 2.7V to 5.5V input. A low ext

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High Efficiency 1.5X Fractional Charge Pump For White LED Applications

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