2MHz, 1.5A Flash LED Driver

  • Drive up to 1.5A flash current
  • Programmable threshold low-voltage input protection
  • High efficiency converter (up to 90%)
  • Input voltage range: 2.7V to 5.5V
  • 2MHz step-up converter
  • Very small inductor: 1.0μH to 2.2μH
  • Very small load capacitor: 4.7μF to 10μF
  • ExpressWireTM digital control enables and programs flash and movie current in 16 steps
  • External resistor sets maximum flash current
  • Integrated thermal regulation control
  • 2mA LED shorting test current and 1.7V forward voltage threshold
  • LED open/short protection
  • Over-voltage protection
  • Cycle-by-cycle inductor current limit
  • Programmable Flash Timeout protection 0.1µA shutdown current
  • Pb-free Package: TDFN2x3-14
  • -40˚C to +85˚C Temperature Range

Applications

  • Mobile Phones
  • Smart Phones and PDAs
  • Digital Still Cameras

Key Electrical Specifications

Vin(Min) Vin(Max) Max. Current per Channel Channels Control Type Package
2.7V 5.5V 1500mA 1 ExpressWire  TDFN23-14

Typical Application Diagram