Features

• High efficiency synchronous boost converter
with 2MHz/4MHz switching frequency option
• I2C interface programming and hardware
STROBE/TORCH control
• Single-channel programmable current source
 Flash/Torch/IR modes
■ Flash: Up to 1.5A
■ Torch: Up to 0.375A
 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

Applications

• Smartphones and Tablets Camera Flash
• Digital Cameras

Brief 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.