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.

FEATURES

■ Ideal For White LED Driver

■ Low Profile, Inductorless Regulator

■ Output Current up to 200mA

■ X1.5 and X2 Modes for Highest Efficiency

■ +2.7V to +5.5V Input Voltage Range

■ Fast Turn-On Time, 175µS

■ 1mA Quiescent Current

■ <1.5µA Shutdown Current

■ 600kHz 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

APPLICATIONS

■ Next Generation Mobile Phones

■ PDAs

■ 3.3V to 5.0V Conversion

■ Palmtop Computers

■ Color LCD Modules