Step-Up LED Driver with ExpressWire or PWM Control

Features

  • Wide output range: up to 10 series LEDs
  • Integrated 40V high current switch (0.75A 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
    • KTD2500: 38V
    • KTD2500B: 26V
  • High switching frequency: 600kHz
  • 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) Max. Current per Channel Channels Control Type Package
2.7V 5.5V 30mA(@35Vout) 1 ExpressWire or PWM  TDFN22-6

Typical Application Diagram

KTD2500