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Driving Automotive LEDs with Linear Current Source/Sink VS Resistor solutions

This application note provides guidance for electronics engineers who design automotive lighting systems and need to choose the most reliable method for driving light-emitting diode (LED)s. Its purpose is to compare a simple resistor‑based LED driving approach with a linear constant‑current solution built around Infineon’s LITIX™ Basic+devices. The document explains why LEDs require accurate current control and shows how LITIX™Basic+ helps to maintain stable brightness, protect the LEDs, and improve system robustness. It also highlights the benefits of using integrated diagnosis and protection features to support original equipment manufacturer (OEM) requirements for reliability and safety.

• 156.78 KB
• 29/07/2026