STCF06

STCF06 1.5 A white LED driver with I²C interface Features ■ ■ Buck-boost DC-DC converter Drives one power LED up to: – 1.5 A between 3.5 V to 5.5 V – 1.3 A between 3.0 V to 5.5 V – 1 A between 2.7 V to 5.5 V Efficiency up to 80% Output current control 1.8 MHz fixed frequency PWM Full I²C control Operational modes: – Shutdown mode – Ready mode + auxiliary red LED – Ready mode + NTC – Flash mode: up to 1.5 A – Torch mode: up to 370 mA Soft and hard triggering of flash Flash and torch dimming with 16 exponential values Dimmable red LED indicator auxiliary output or externally timed flash operation Digitally programmable safety time-out in flash mode LED over temperature detection and protection with external NTC resistor Open and shorted LED failure detection and protection Chip over temperature detection and protection < 1 µA shutdown current Package 3x3 mm TFBGA25 TFBGA25 (3x3) ■ ■ ■ ■ ■ Applications ■ ■ ■ Cell phones and smart phones Camera flashes/strobe PDAs and digital still cameras Description The STCF06 is a high efficiency power supply solution to drive a single flash LED in camera phones, PDAs and other battery powered devices. It is a buck-boost converter able to guarantee a proper LED current control over all possible conditions of battery voltage and LED forward voltage. The output current control ensures a good current regulation over the forward voltage spread characteristics of the flash LED. All the functions of the device are controlled through the I²C bus...