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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 to10μF

        • 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 Time out protection 0.1μA shutdown current

        • Pb-free Package: UDFN22-10L

        • -40°C to +85°C Temperature Range


  • Mobilephones

  • Smart Phones and PDAs

  • Digital Still Cameras

Key Electrical Specifications

 Vin(Min)   Vin(Max) 

 Max. Current Per Chanel(Max)

 Channels  Control Type Package
2.7V 5.5V 1500mA 1 ExpressWire  UDFN22-10 

Typical Application Diagram