Automotive

Automotive LED driver ICs with integrated core functionality

NXP provides fully integrated solutions for automotive lighting applications. These include the ASL10xx series of LED drivers, which provide a fully integrated solution that maintains system flexibility for automotive LED lighting applications. In addition, stand-alone LIN I/O slave, which have many on-chip features, including an integrated LIN2.0 / SAE-J2602 transceiver. Both solutions significantly enhance system performance and minimize application-specific overhead.

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Key features and benefits

  • Temperature feedback enabling control of temperature and performance of the LED
  • Low system cost due to reduced component count
  • LED fault detection to enable feedback in case LED fault
  • Small package outline size
  • Low supply current
  • Enables safer night driving, for all road-users
  • Thermally protected
  • Extra comfort and convenience for drivers
  • Brake function by short-circuiting the motor
  • Simple, robust solution

Key applications

  • Daytime running light
  • High beam
  • Low beam
  • Turn indicator
  • Rear combination lighting

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Descriptive summary

LED driver ICs and light position controllers

The NXP ASL10xx series of LED driver ICs are automotive qualified application specific standard products that offer a fully integrated solution for automotive LED lighting applications. They provide the core functionality needed whilst maintaining system flexibility, enabling design re-use, and providing significant scalability at low cost.

The light position controller (Leucht Weiten Steller, LWS) is a monolithic integrated circuit intended to be used in passenger cars. This device adapts the elevation of the light beam of the head light of the car to a state defined by the car driver using a potentiometer on the dashboard.

Drivers can adjust the elevation as required by simply selecting a new position, and the TDA3629 activates the control motor to raise or lower the angle of the light beam. With low positional error it allows drivers to position their headlight beam accurately, maximizing illumination of the road without blinding any oncoming traffic. Protected against temperatures above 160 ºC and electrical transients, the device also features under and over supply voltage protections and broken wire detection.

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