| Description & Applications | FEATURES • High Efficiency White LED Drivers for Backlight and Keypad • Input Supply Voltage Range: 2.7V to 5.5V • Maximum Boost Output Drive: Up to 24V at 100mA • Up to 85% Efficient Operation • Up to 2MHz Switching Frequency with Small Inductor • User-Programmable Full-Scale LED Current, Up to 30mA • Single-Wire AS2Cwire Serial Interface — Five Addressable Registers • Independent LED Current Control by Group — Backlight Group B1-B2, 16 Settings — Auxiliary Group A1-A3, 16 Settings • Independent LED ON/OFF Control — Fast, 1MHz Serial Interface • Non-Pulsating, High-Performance LED Current Drive for Uniform Illumination — 10% Absolute Accuracy — 2% Channel-to-Channel Matching • Over-Voltage and Over-Temperature Protection • Automatic Soft-Start Minimizes Large Inrush Current at Startup • Available in 3x4mm TDFN34-16 Package Applications • Digital Still Cameras (DSCs) • Keypad Backlight • Large Panel Displays • Mobile Handsets • Personal Media Players • PDAs and Notebook PCs • White LED Backlight |