Brief Description
KTD2688 is the ideal power solution for high-power flash LEDs. It includes a highly integrated synchronous boost converter and two current sources, 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 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.

FEATUREs
• High efficiency synchronous boost converter
   with 2MHz/4MHz switching frequency option
• I2C interface programming and hardware
   STROBE/TORCH control
• Two-channel independent current sources
   ► LED1/LED2: Up to 1.5A
   ► Flash/Torch/IR modes
   ► Independent LED on/off and current settings
   ► Programmable ramp shape and time control
   ► Three input low voltage protection modes
   ► Torch currents up to 187.5mA (KTD2688) or
      375mA (KTD2688A)
   ► Flash time-out protection up to
      1.60s(KTD2688A)
   ► LED cathode ground connection for improved
      thermal dissipation
• LED open/short protection
• I2C fault read back
• RoHS and Green Compliant

APPLICATIONs
• Smartphones and Tablets Camera Flash
• Digital Cameras