RT9903B ic equivalent, 4 channel dc/dc converters ic.
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Two step-up DC-DC Converters (CH1, CH2) `HV Internal Switches `50mA Load Current One Step-up DC-DC Converter (CH3) `0.2V Reference Voltage `HV Internal Switches `LED B.
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Digital Still Camera PDAs Portable Device
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Pin Configurations
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COMP2 AGND COMP1
19 18 17 16
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The RT9903B is a complete power-supply solution for digital still cameras and other hand-held devices. It integrates a high-efficiency fours step-up DC-DC converters and a charge pump.
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Features
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Two step-up DC-DC Converters (CH.
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