Description & Applications | FEATURES • High Efficiency 1X/1.5X/2X Charge Pump for White LED Applications • VIN Range: 2.7V to 5.5V • Fully Programmable Current with Single Wire — 16-Step Logarithmic Scale — 15/20/30mA Max Current — Four Low-Current Settings Down to 50µA — Low IQ (50µA) for Low-Current Mode • Tri-Mode 1X, 1.5X, and 2X Charge Pump for Maximum Efficiency and VF Coverage • Drives Four Channels of LEDs • Individual Main/Sub-Group Control • No Inductors, Low Noise Operation • 1MHz Constant Switching Frequency • Small Application Circuit • Built-In Thermal Protection • Built-In Auto-Disable for Short-Circuit • Automatic Soft Start • IQ <1µA in Shutdown • TDFN33-12 Package Applications • Color (RGB) Lighting • Programmable Current Sinks • White LED Backlighting • White Photo Flash for Digital Still Cameras |