The MLX81143 is a multi-channel RGB-LED controller that enables high-speed light animations. It continues to extend the MeLiBu product family with a higher number of integrated LED drivers.

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Top features

  • MCU for extended LED control algorithm, color mixing and full diagnosis

  • Red/Green and Blue LED temperature compensation without additional external components

  • Color mixing accuracy of < 1% delta UV

  • 16-bit color/intensity control

  • Storage of LED calibration data directly within LED driver

  • Low side programmable calibrated current sources for LED control

  • Direct LED drive without additional external components

  • LEDs fully diagnosable (Short circuit, broken line, threshold monitor)

  • Real-time update of > 800 RGB LEDs without delay

  • MeLiBu® compatible communication interface

  • 5.5 - 28 V supply voltage (40 V proof)

  • Advance power management for LEDs

  • ASIL B classification

  • 21 LED drivers

  • Memory

    • 32 KB Flash

    • 4 KB RAM

    • 512 B EEPROM

    • System ROM

  • QFN32 5x5 package, 32 pins

Discover all features
Smart multi-channel RGB-LED controller with 21 drivers - MLX81143

Product description

The MLX81143 is a fully integrated smart automotive LED driver with high-speed robust communication (MeLiBu®) between multiple LED drivers to enable applications with high RGB-LED counts for highly dynamic light animations within cars.

All necessary components needed for LED driving as well as communication are integrated and allow to develop powerful and cost-optimized animated light systems. The embedded intelligence allows a very high accuracy of the RGB color mixing as well as the support of ASIL B grade applications thanks to the MeLiBu® communication system. The MLX81143 extends the MeLiBu product family with a higher number of integrated LED drivers.

Key applications

  • Highly animated light modules
  • Interior driver communication by light
    • Voice command signal confirmation
    • Safety warning applications
    • Advanced navigation support
    • Blindspot warning
  • Animated Rear Light and DRL

Evaluation kit and Software are available on request. Please contact Melexis for additional information.

MLX81143 block diagram

Features and benefits

  • MCU for extended LED control algorithm, color mixing and full diagnosis

  • Red/Green and Blue LED temperature compensation without additional external components

  • Color mixing accuracy of < 1% delta UV

  • 16-bit color/intensity control

  • Storage of LED calibration data directly within LED driver

  • Low side programmable calibrated current sources for LED control

  • Direct LED drive without additional external components

  • LEDs fully diagnosable (Short circuit, broken line, threshold monitor)

  • Real-time update of > 800 RGB LEDs without delay

  • MeLiBu® compatible communication interface

  • 5.5 - 28 V supply voltage (40 V proof)

  • Advance power management for LEDs

  • ASIL B classification

  • 21 LED drivers

  • Memory

    • 32 KB Flash

    • 4 KB RAM

    • 512 B EEPROM

    • System ROM

  • QFN32 5x5 package, 32 pins

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