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RT9903B - 4 Channel DC/DC Converters IC

Description

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.

Features

  • z 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 Brightness Dimming Control `Over Voltage Protection One Step-up DC-DC Converter (CH4) `External Switches `External Current Limit Setting Up to 1.4MHz Switching Frequency 1μA Supply Current in Shutdown Mode External Compensation Network for All Converters Programmable Soft Start Function (CH1, CH2, CH3, CH4) Independent Enable Pin.

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Datasheet Details

Part number RT9903B
Manufacturer Richtek Technology Corporation
File Size 456.99 KB
Description 4 Channel DC/DC Converters IC
Datasheet download datasheet RT9903B Datasheet

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Other Datasheets by Richtek Technology Corporation

Part Number Description
RT9903 5 Channel DC/DC Converters IC
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Full PDF Text Transcription

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Preliminary RT9903B 4 Channel DC/DC Converters IC with High-Efficiency Step-Up General Description 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. www.DataSheet4U.com Features z 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 Brightness Dimming Control `Over Voltage Protection One Step-up DC-DC Converter (CH4) `External Switches `External Current Limit Setting Up to 1.
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