Brief Description
KTD2683B is the ideal power solution for high-power flash LEDs. It includes a highly integrated synchronous boost converter, two current sources and one current sink, providing a very small total solution in portable application. It has both I2C interface and hardware STROBE/TORCH pins for maximum control flexibility. The two integrated current sources and one current sink are independently controlled, their on/off conditions and current settings in Flash/Torch/IR modes can be programmed independently by the I2C interface. It also has three selectable input low voltage protection modes to prevent a system reset under low battery condition. Thermal regulation is also integrated to limit the IC temperature and continuously provide the maximum output current.

FEATUREs
• High efficiency synchronous boost converter
   with 2MHz/4MHz switching frequency option
• I2C interface programming and hardware
   STROBE/TORCH control
• Two current sources and one current sink
   ► LED1: Up to 1.5A (7 bits)
   ► LED2: Up to 0.75A (6 bits)
   ► LED3: Up to 0.3A (6 bits)
   ► Flash/Torch/IR modes
   ► Independent LED on/off and current settings
   ► Programmable ramp shape and time control
   ► Three input low voltage protection modes
   ► Flash time-out protection
   ► LED cathode ground connection for improved
      thermal dissipation (LED1/LED2)
• LED open/short protection
• I2C fault read back (I2C address = 0x63)

APPLICATIONs
• Smartphones and Tablets Camera Flash
• Digital Cameras