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Step-Up LED Driver with ExpressWire or PWM Control

        • Wide output range: up to 10 series LEDs

        • Wide output range: Integrated 40V high current switch (1.2A limit)

        • VIN: 2.7V~5.5V

        • High efficiency PWM converter (up to 88%)

        • Low 200mV feedback voltage

        • Single-wire interface dual method dimming

          • ExpressWire Digital Control
          • PWM dimming
        • High accuracy across full load range

        • LED open-circuit (OVP) protection: 38V

        • LED High switching frequency: 1.2MHz

        • Simple, small solution size

        • Simple, small solution size

        • Integrated Softstart

        • <1µA shutdown current

        • Small TDFN22-6 Package

        • "RoHS" and Green compliant

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


  • LED backlighting

  • Mobile Phones

  • Handheld Devices

  • Digital Photo Frames

  • Automotive Navigation

Key Electrical Specifications

Vin(Min) Vin(Max) Maximum # of LED  Channel  Channels Control Type Package
2.7V 5.5V 10  PWM   TDFN22-6 

Typical Application Diagram