Description

KTD2681 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 integrated current source on/off and current settings in Flash/Torch/IR modes can be programmed by the I²C interface. It also has three selectable input low voltage protection modes to prevent a system reset under low battery condition.

Various protection features are integrated into KTD2681, including cycle-by-cycle input current limit protection, output over-voltage protection, LED fault (open or short) protection, flash timeout protection and thermal shutdown protection.

KTD2681 is available in a RoHS and Green 12-ball 1.30mm x 1.57mm WLCSP package with 0.4mm pitch.

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: Up to 1.5A (7 bits)
  • LED2: Up to 0.75A (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
• LED open/short protection
• I²C fault read back (I²C address = 0x63)

Applications

• Smartphones and Tablets Camera Flash
• Digital Cameras

Packaging Information

Parameters

Technical Documentation

Purchase