Automotive Constant Current Regulated LED Driver: TSCR400CX6H, TSCR402CX6H

The TSCR400 & TSCR402 are High-Side Constant Current Regulator (CCR) for linear LED driving. The device regulates with a preset TSCR400 0.1mA and TSCR402 20mA nominal that can be adjusted with an external resistor up to 65mA. It is designed for driving LEDs in strings and will reduce current at increasing temperatures to self-protect. Operating as a series linear CCR for LED string current control, it can be used in multiple applications, as long as the maximum supply voltage to the device is <40V> The output current at higher temperatures is the result of the negative temperature coefficient of -0.07%/°C of the LED driver.

Key Features & Advantages

  • AEC-Q100 qualified with the following results:
    Device temperature grade 1: -40°C to 125°C
    Device HBM ESD classification level H2
    Device CDM ESD classification level C6
  • LED drive current preset:
    TSCR400CX6: 0.1mA
    TSCR402CX6: 20mA
  • Continuous output current up to 65mA with an external resistor
  • Easy paralleling of drivers to increase current
  • Supply voltage up to 40V
  • Good temperature coefficient vs. output current
  • PPAP capable


  • Ambient light
  • Interior light
  • Turn signals
  • Rear cluster lighting
  • Puddle & Sill lights
  • Reading light
  • Instrument cluster illumination
Part NumberBreakdown Voltage(V)Input Voltage(V)Preset Current(mA)Adj. Output Current(mA)ConfigurationPWM from MCUPackage
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