BCR402UE6327HTSA1: Infineon's Low-Drop Linear LED Driver for Automotive and Industrial Applications

In the demanding environments of automotive and industrial electronics, reliability and efficiency are paramount. The BCR402UE6327HTSA1 from Infineon Technologies stands out as a specialized linear constant current regulator (CCR) designed to meet these rigorous requirements. This device provides a simple, robust, and cost-effective solution for driving LEDs, ensuring stable illumination and long operational life.

As a low-drop linear regulator, the BCR402U excels in applications where minimizing power dissipation and maintaining a small form factor are critical. Its key advantage lies in its ability to regulate a constant current to one or more series-connected LEDs with a very low voltage drop—as low as 350 mV at full current. This high efficiency translates to reduced heat generation, which simplifies thermal management and enhances overall system reliability, especially in space-constrained designs.

The device is exceptionally easy to implement, requiring no external components other than the LED string itself. This simplicity significantly reduces the bill of materials (BOM) and PCB footprint while accelerating time-to-market. The BCR402U offers a fixed output current of 20 mA, making it an ideal driver for low-power indicator LEDs, backlighting, and signage.

A primary strength of this driver is its robustness in harsh environments. It features a wide operating voltage range of up to 42 V and is designed to withstand load-dump and other voltage transients common in automotive electrical systems. Its high electrostatic discharge (ESD) protection, compliant with the stringent AEC-Q101 standard for automotive qualification, ensures exceptional durability. This makes it perfectly suited for a vast array of applications, from automotive interior and exterior lighting, dashboard indicators, and infotainment displays to industrial control panels, status indicators, and machine vision lighting.

Furthermore, the integrated thermal shutdown feature protects the device from damage due to overtemperature conditions, adding an essential layer of safety for mission-critical systems.

ICGOODFIND: The Infineon BCR402UE6327HTSA1 is a superior choice for designers seeking a highly reliable, simple, and efficient LED driver. Its combination of a low dropout voltage, minimal external component count, and robust automotive-grade protection makes it an indispensable component for creating durable and high-performance lighting solutions in the most challenging automotive and industrial applications.

Keywords: Low-Drop Regulator, Automotive Lighting, Constant Current Driver, AEC-Q101, Industrial Applications.