
Signal Processing Technologies
DESCRIPTION
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.
FEATURES
■ High Efficiency > 90%
■ Support up to 4 White LEDs with current matching
■ Three Charge Pump Modes: X1, X1.5, X2
■ Soft Start Function
■ Short Circuit Protection
■ Output Overvoltage Protection
■ Thermal Shutdown
■ Programmable LED drive capability
■ PWM Dimming Control
■ 1MHz Fixed Frequency Oscillator
■ Low 1µA Shutdown Current
■ Pin Compatible with SC604
APPLICATIONS
■ Mobile phones
■ White LED Backlighting
■ Camera Flash LED lighting