SP6682 Datasheet | Sipex

FEATURES - Ideal For White LED Driver - Low Profile, Inductorless Regulator - X1.5 and X2 Modes for Highest Efficiency - +2.7V to +5.5V Input Voltage Range - Fast Turn-On Time, 175µS - 1m A Quiescent Current - <1.5µA Shutdown Current - Built-in 600k Hz Oscillator - Programmable Output Current or Voltage - PWM Dimming Control with Enable Pin - Shutdown to Disconnect Output from Input - Soft Start to Eliminate In-Rush Current - Industry Standard 10-pin MSOP Package and Small 10-pin DFN Package VOUT C1P VIN VMODE FB 1 2 3 4 5 10 C2P 10 Pin DFN 9 C1N 8 GND 7 C2N 6 EN/PWM Now Available in Lead Free Packaging APPLICATIONS - Next Generation Mobile Phones - PDAs - 3.3V to 5.0V Conversion - Digital Still Cameras - Digital Camcorders - Palmtop puters - Color LCD Modules DESCRIPTION The SP6682 is a current regulated charge pump ideal for converting a Li-Ion battery input for driving white LED used in backlighting color displays. The charge pump automatically switches between X1.5 and X2 modes based on the input voltage, providing improved efficiency over traditional methods using charge pump doubler followed by LDO. This input voltage threshold can be externally programmed for optimized efficiency at specific output voltages and currents. The SP6682 operates with an internal 600k Hz clock, enabling the use of small external ponents. Output current or voltage can be accurately regulated by modulating the switcher between the charge pump and output capacitor. In shutdown mode, the IC disconnects the output from the input and draws less than 1.5µA current. The SP6682 is offered in a 10-pin MSOP package, and a small 10-Pin DFN Package. TYPICAL APPLICATION SCHEMATIC C6 0.1µF C4 2.2µF C5 2.2µF White LED C2 2.2µF 2.7 - 4.2V ® 1 V OUT 2 C1P Lithium-Ion C1 2.2µF R1 C2P 10 SP6682 C1N 9 3 8 VIN GND 4 7 VMODE C2N 5 6 FB...