SP6683

SP6683 1X/1.5X High Efficiency Charge Pump LED Driver for Flash or Backlight FEATURES ■ Output Current up to 200mA VOUT 1 10 C2P ■ Ideal for White LED driver in CellPhone Flash ■ 0.5µA Shutdown Current ■ 1x/1.5x Mode Charge Pump ■ +2.7V to +5.5V Input Voltage Range ■ Built-in 1.2MHz Oscillator ■ 0.5mA Quiescent Current C1P 2 VIN 3 VMODE 4 FB 5 SP6683 10 Pin DFN 9 C1N 8 GND 7 C2N 6 EN/PWM ■ Over Temperature Protection ■ Shorted LED Protection Now Available in Lead Free Packaging ■ Programmable Output Current or Voltage ■ PWM Dimming Control via Enable Pin ■ Soft Start to limit In-Rush Current ■ Space Saving 10-pin 3 x 3mm DFN Package ■ Three Options for Optimizing Efficiency: ■ SP6683 - MOSFET discharge in shutdown ■ SP6683-03 - High Impedance in shutdown ■ SP6683-LV - Low Voltage (150mV)VFB Reference APPLICATIONS ■ Mobile Phone ■ Camera Flash Driver ■ PDA ■ Digital Still Camera ■ Digital Camcorder ■ Color LCD Module DESCRIPTION The SP6683 is a high power current regulated charge pump ideal for converting a Li-Ion battery input for driving up to 8 white LED’s used in backlighting color displays. The SP6683 operates with an internal 1.2MHz clock, enabling the use of small external components. Output current can be accurately regulated by modulating the switcher between the charge pump and output capacitor. In shutdown mode, the SP6683 discharges the output to ground and draws less than 500nA current. Offered in 10-pin DFN package, the SP6683 family includes three op...