LTC3206 Datasheet PDF - Linear Technology

DESCRIPTION
The LTC®3206 is a highly integrated multidisplay LED controller. The part contains a high efficiency, low noise fractional step-up/direct-connect charge pump to provide power for both main and sub white LED displays plus an RGB color LED display. The LTC3206 requires only four
small ceramic capacitors plus two resistors to form a complete 3-display LED power supply and current controller.

FEATURES
■ Step-Up/Direct-Connect Fractional Charge Pump Provides Up to 92% Efficiency
■ Up to 400mA Continuous Output Current
■ Independent Current and Dimming Control for 1-6 LED MAIN, 1-4 LED SUB and RGB LED Displays
■ LED Currents Programmable Using 2-Wire I2C™ Serial Interface
■ 1% LED Current Matching
■ Low Noise Constant Frequency Operation*
■ Minimal Component Count
■ Automatic Soft-Start Limits Inrush Current
■ 16 Exponentially Spaced Dimming States Provides
  128:1 Brightness Range for MAIN and SUB Displays
■ Up to 4096 Color Combinations for RGB Display
■ Low Operating Current: IVIN = 180µA
■ Tiny, Low Profile 24-Lead (4mm × 4mm × 0.75mm) QFN Package

APPLICATIONS
■ Cellular Phones
■ Wireless PDAs
■ Multidisplay Handheld Devices