LTC3207 Datasheet PDF - Linear Technology

DESCRIPTION
The LTC®3207/LTC3207-1 are highly integrated multi-display LED drivers. The device contains a high-efficiency, low-noise charge pump to provide power to 12 universal LED current sources and one camera LED current source. The LTC3207/LTC3207-1 require only five small ceramic capacitors to form a complete LED power supply and current controller. In addition there are two I2C addresses available.

FEATURES
■ Low Noise, Multi-Mode Charge Pump (1x, 1.5x, 2x)
   Provides Up to 91% Effi ciency
■ Slew Limited Switching Reduces Conducted and
   Radiated Noise (EMI)
■ Up to 600mA Total Output Current
■ Twelve 28mA Universal Current Sources with
   64-Step Linear Brightness Control
■ 425mA CAM LED Current Source with 16-Step
   Linear Brightness Control and 2-Second High
   Current Safety Timer
■ Independent On/Off, Brightness Level, Blinking and
   Gradation Control for Each Current Source Using
   2-Wire I2CTM Interface
■ Internal Current Reference
■ Two I2C Addresses are Available
   (LTC3207 00110110, LTC3207-1 00110100)
■ Confi gurable ENU Pin for Asynchronous LED
   On/Off Control
■ Automatic or Forced Mode Switching
■ Internal Soft-Start Limits Inrush Current
■ Short-Circuit/Thermal Protection
■ 4mm × 4mm 24-Pin QFN Plastic Package

APPLICATIONS
■ Video Phones with QVGA+ Displays