LTC3209-2 Overview
These parts contain a high efficiency, low noise charge pump to provide power to MAIN, CAM and AUX LED displays. The LTC3209-1/ LTC3209-2 require only four small ceramic capacitors and one current set resistor to form a plete LED power supply and current controller. The maximum display currents are set by a single external resistor.
LTC3209-2 Key Features
- Up to 600mA Total Output Current
- LED On/Off and Brightness Level Programmable .. Using 2-Wire I2CTM Interface
- Automatic Charge Pump Mode Switching or Fixed Mode for Power Supply Generation
- Low Noise Constant Frequency Operation
- Internal Soft-Start Limits Inrush Current During Start-up and Mode Switching
- Short Circuit/Thermal/Open-Shorted LED Protection
- 256 Brightness States for MAIN Display
- 16 Brightness States for CAM Display
- 4 Brightness States for AUX Display
- 20-Lead (4mm × 4mm) QFN Package