SKY81296

2.4 A / 2 A Dual Independent Flash LED Driver with TrueFlash™


Please note: this product is being discontinued and is not recommended for new designs.

The SKY81296 with TrueFlash™ is a high-efficiency, 2.4 A/2 A high-current boost converter with two independently programmable constant current outputs. By offering completely independent control of the two LEDs, the SKY81296 enables camera system engineers to implement sophisticated flash management algorithms that enhance image quality. The device is intended for LED photo flash applications in all single-cell Li-ion powered portable products.

Specifications

Flash IOUT Total (mA)2400
Movie Mode IOUT Total (mA)250
LED Channels2
Min. VIN (V)2.5
Max. VIN (V)5.5
Max. VOUT (V)5.5
InterfaceI²C
Max. Shutdown Current (μA)1
Typ. IQ (μA)1
Peak Efficiency93%
PackageWLCSP, 20-bump
Package (mm)1.75 x 2.3 x 0.4
PackageWLCSP-20

Features

  • Input voltage range: 2.5 V to 5.5 V
  • Up to 1.5 A regulated output current, up to 2.4 A/2 A total combined output current from both outputs
  • TrueFlash™:
    • Independent control of each LED using I2C and Flash enable pins
    • Each flash LED can be configured separately in flash, movie mode, or notification mode
    • Enables sophisticated flash management to optimize image quality
  • Up to 90% efficiency
  • Input voltage monitoring and dynamic flash current control with readback
  • 2.75 MHz switching frequency
  • Soft-start and input current limit
  • Separate flash enable/flash inhibit
  • Programmable blinking LED notification
  • Fast Mode Plus 1 MHz I2C programming:
    • Flash and Movie mode (MM) current
    • Input voltage monitor with programmable thresholds
    • Current read-back in input voltage monitor operation
    • Programmable safety timer
    • Fault read back
  • Fault protection:
    • Integrated flash safety timer
    • Over-voltage protection (open LED, open circuit)
    • Short circuit
    • Over-temperature protection
    • Programmable inductor current limit
    • Flash mode input voltage monitor
    • Open-drain fault output
  • -40 ºC to +85 ºC temperature range
  • Small WLCSP (20-bump, 1.75 mm x 2.30 mm, 0.4 mm pitch)

Product Documents