SP6687

www.DataSheet4U.com ® SP6687 4 Channel Charge Pump White LED Driver GND C2N 10 C2P 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 12 LED4 LED3 LED2 LED1 13 14 15 16 1 11 C1N 9 8 C1P VIN VOUT ISET 7 6 5 4 SP6687 16 Pin QFN 2 3 CTRL0 CTRL1 Pin 1 Orientation Now Available in Lead-Free Packaging APPLICATIONS ■ Mobile phones ■ White LED Backlighting ■ Camera Flash LED lighting 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. TYPICAL APPLICATION CIRCUIT C1 1µF 8 7 CIN 1µF 1 VIN EN C1P 9 C1N 11 C2 1µF 10 C2N VOUT 6 C2P ® Li-ion Battery 2 CTRL0 3 4 5 RSET CTRL1 CTRL2 ISET SP6687 CTRL2 EN LED1 16 LED2 15 LED3 14 13 COUT 1µF GND 12 LED4 Typical Application Circuit for 4-White LEDs Date: 11/15/05 SP6687 4Channel Charge Pump White LED Driver © Copyright 200...