FEATURES
Charge Pump, 400mA Flash LED, Dual LDOs, and SemWireTM Interface DESCRIPTION
Performance is optimized for use in single-cell Li-ion battery applications. A flashtimeout feature disables the flash if active for longer than 1 second. The SC622 also provides two low-dropout, lownoise linear regulators for powering a camera module or other peripheral circuits. The SC622 uses the proprietary SemWireTM single wire interface. The interface controls all functions of the device, including flash current and two LDO voltage outputs. The single wire implementation minimizes microcontroller and interface pin counts. The flash/spotlight output is triggered via either the SemWire interface or a dedicated pin. In sleep mode, the device reduces quiescent current to 100μA while continuing to monitor the serial interface. The two LDOs can be enabled when the device is in sleep mode. Total current reduces to 0.1μA in shutdown. Input supply voltage range — 3.0V to 5.5V Char...
Semtech Corporation
