LED DRVR 1Segment 3.3V/5V 25-Pin TFBGA T/R

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 which helps to reduce logic pins on the package and to save PCB tracks on the board. Hard and soft-triggering of flash are both supported. The device includes many functions to protect the chip and the power LED, such as: soft start control, chip over temperature, open and shorted LED detection and protection.

• 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
• Internally 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 3 x 3 mm TFBGA25