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.