The SC604A is a very high efficiency charge pump white LED driver optimized for Li-Ion battery applications. It features four LED outputs that are current matched for consistent LED brightness. The charge pump automatically reconfigures to match circuit conditions, resulting in extremely low battery current. With four LEDs, each at 20mA, the SC604A can use less than 83mA from the supply for most of the battery life. It utilizes patented low noise mode switching circuitry and constant output current, allowing for the use of extremely small input and output capacitors. The product offers high efficiency, current regulation, a wide range of current options, and various protection features.