Description

The SC622 is a high effi ciency charge pump LED driver using Semtech’s proprietary mAhXLifeTM

technology. Performance is optimized for use in single-cell Li-ion battery applications.

The charge pump provides continuous or bursted current to a flash LED using a dedicated flash driver current sink. The load and supply conditions determine whether the charge pump operates in 1x, 1.5x, or 2x mode. A flash timeout feature disables the flash if active for longer than 1 second. The SC622 also provides two low-dropout, low noise linear regulators for powering a camera module or other peripheral circuits.

Applications

Cellular phone flash

PDA flash

Camera I/O and core power

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