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

Applications

  • 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 1  PWM  TDFN22-6

Typical Application Diagram