LT3474-1

LED Driver IC by Linear Technology

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The LT3474-1 from Linear Technology is a Step-Down LED Driver IC that operates at an input voltage range of 4 - 36 V. It has unique True Color PWM circuitry that delivers constant color with a 400:1 dimming range and prevents color shift due to LED current dimming. This LED driver IC has an adjustable switching frequency of 200 kHz to 2 MHz and a maximum duty cycle of 98%. It has an integrated boost diode and adjustable control for LED output current from 35 mA to 1 A. This LED driver IC uses small inductors & ceramic capacitors and has Open LED & short-circuit protection. It is available in an SSOP Thermally Enhanced SMT package and is ideal for automotive and avionic lighting, architectural detail lighting, constant current sources and display backlighting applications.

Product Specifications

Product Details

  • Part Number
    LT3474-1
  • Manufacturer
    Linear Technology
  • Description
    1A LED Driver IC for Automotive & Avionic Lighting Applications

General Parameters

  • Topology
    Buck, LED Driver
  • Supply Voltage
    4 to 36 V
  • Supply Current
    2.6 to 4 mA
  • Output Voltage
    26 V
  • No of Channels
    1
  • Dimming Control
    400:1 PWM, 10:1 Analog
  • Input Voltage
    4 to 36 V
  • Shutdown Current
    0.01 to 2 µA
  • Switching Current
    2.1 to 1.6 A
  • Switching Frequency
    500 KHz

Physical Properties

  • Package
    TSSOP-16
  • Package Size
    32.6 mm2

Technical Documents

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