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SC635 - Charge Pump Flash LED Driver

General Description

The SC635 is a high-current charge pump designed specifically for use with white LEDs used in camera flash applications.

Only two small bucket capacitors are required to develop the output drive, providing a low EMI solution compared to inductive boost regulators.

Key Features

  • SC635 u u u u u Two selectable modes - Flash and Spotlight 200mA max output - Flash Mode Spotlight mode set to 40% of Flash Current 3.0V to 5.25V Input Range External pins for control of flash and spotlight modes for synchronization to a camera module or graphics controller u Short circuit, over-voltage, and over-temperature protection u Soft-start functionality u Micro Lead Package MLPD-10, 3mm x 3mm.

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Datasheet Details

Part number SC635
Manufacturer SEMTECH
File Size 429.10 KB
Description Charge Pump Flash LED Driver
Datasheet download datasheet SC635 Datasheet

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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POWER MANAGEMENT Description The SC635 is a high-current charge pump designed specifically for use with white LEDs used in camera flash applications. Only two small bucket capacitors are required to develop the output drive, providing a low EMI solution compared to inductive boost regulators. The SC635 has two modes of operation: Flash mode and Spotlight mode. In Flash mode, the SC635 is capable of delivering 200mA to a high-intensity LED during image capture. In Spotlight mode the SC635 outputs 40% of the Flash mode current for general purpose lighting or status indication. An external resistor is connected in series with the LED to set the current. In Flash mode, this resistor can dissipate up to 50mW, reducing the power dissipation requirement of the SC635.