Infineon TLE6389-3GV50: A High-Performance 50V Linear Voltage Regulator for Automotive Applications

The increasing complexity of automotive electronic systems demands highly reliable and robust power management solutions. Addressing this need, Infineon Technologies introduces the TLE6389-3GV50, a state-of-the-art 50V linear voltage regulator engineered to meet the stringent requirements of modern vehicles. This IC is designed to provide a stable, low-noise power supply for critical applications such as engine control units (ECUs), sensors, and infotainment systems, even in the harsh under-the-hood environment.

A standout feature of the TLE6389-3GV50 is its exceptionally wide input voltage range of up to 50V. This high voltage capability allows it to handle challenging automotive transients, including load dump pulses, with significant margin, ensuring uninterrupted operation and protecting sensitive downstream components. The device delivers a fixed, highly accurate 5.0V or 3.3V output with a maximum current of 150mA, making it an ideal choice for powering microcontrollers and other core logic circuits.

Beyond its voltage handling, the regulator is built for superior reliability and diagnostic functionality. It incorporates key protection features such as over-current protection (OCP), over-temperature shutdown (TSD), and reverse polarity protection. Furthermore, an enable pin allows for external control of the output, facilitating power sequencing and low-power modes. The device also offers a fault reporting function, providing a signal to the microcontroller in case of an error condition, which is critical for functional safety and ASIL (Automotive Safety Integrity Level) compliant systems.

Housed in a compact, thermally enhanced PG-SOT223-5 package, the TLE6389-3GV50 is optimized for efficient heat dissipation in space-constrained applications. Its AEC-Q100 qualification guarantees performance and longevity under the extreme temperature fluctuations and rigorous operational conditions standard in the automotive industry.

ICGOODFIND: The Infineon TLE6389-3GV50 stands out as a robust and highly integrated linear regulator solution. Its combination of a 50V input rating, comprehensive protection suite, and diagnostic capabilities makes it a superior and reliable choice for powering the electronic heart of next-generation automobiles, ensuring stability and safety from powertrain to cockpit.

Keywords: Automotive, Linear Voltage Regulator, 50V Input, AEC-Q100, Diagnostic Features.