The charge pump provides backlight current in conjunction with four matched current sinks. It also can supply continuous or bursted current to a flash LED using the dedicated flash driver current sink. The load and supply conditions determine whether the charge pump operates in 1x, 1.5x, or 2x mode. An optional fading feature that gradually adjusts the backlight current is provided to simplify control software. A flash-timeout feature disables the flash if active for longer than 1 second. The SC623A uses an I2C compatible serial interface. The interface controls all functions of the device, including backlight and flash currents. The flash/spotlight output is triggered via either the I2C interface or a dedicated pin.