The SP6687 is a compact, highly efficient and highly integrated 4 channel charge pump white LED driver. It can support from 1 to 4 White LEDs and is optimized for Li-Ion battery applications. Current matching allows all 4 LEDs to maintain consistent brightness. Users can control White LEDs by three programming bits. Each channel can support up to 30mA of current. This device is available in a 4mm x 4mm, 16 pin QFN package. TYPICAL APPLICATION CIRCUIT