Infineon TLS850B0TEV50: A High-Performance LDO Voltage Regulator for Automotive and Industrial Applications

In the demanding worlds of automotive electronics and industrial control systems, power management is paramount. Voltage regulators must deliver unwavering reliability, exceptional efficiency, and robust performance under the most challenging conditions. The Infineon TLS850B0TEV50 stands out as a high-performance, low-dropout (LDO) linear voltage regulator engineered specifically to meet and exceed these rigorous requirements.

Designed from the ground up for automotive-grade applications, this LDO regulator boasts an operating input voltage range from 3.0 V to 40 V, making it exceptionally versatile. It can handle load dump transients, a common occurrence in automotive environments, with ease. Its very low dropout voltage of typically 135 mV at 500 mA ensures stable operation even when the input voltage is only marginally higher than the output, which is critical for maximizing efficiency and battery life in start-stop scenarios.

A key hallmark of the TLS850B0TEV50 is its outstanding accuracy and low noise performance. With an initial output voltage accuracy of ±1% and excellent load and line regulation, it provides the clean, stable power essential for sensitive microcontrollers, sensors, and infotainment systems. Furthermore, its very low current consumption in standby mode makes it an ideal choice for always-on applications like keyless entry systems or ECU keep-alive memory, helping to meet strict quiescent current targets.

Beyond its electrical performance, the device is packed with advanced diagnostic and protection features. These include over-current protection (OCP), over-temperature shutdown (OTSD), reverse polarity protection, and a power-good flag for system monitoring. This comprehensive suite of safeguards ensures system integrity and enhances overall functional safety, a critical consideration for ASIL (Automotive Safety Integrity Level) compliant designs.

Housed in a thermally enhanced, space-saving PG-TO252-5-11 (DPAK) package, the regulator offers excellent thermal performance, capable of dissipating heat effectively even under full load. This combination of power density and robustness also makes it a perfect fit for harsh industrial environments, including factory automation, PLCs, and ruggedized computing.

ICGOOODFIND: The Infineon TLS850B0TEV50 is a premier LDO voltage regulator that sets a high benchmark for power management solutions. Its robust 40V capability, very low dropout, high accuracy, and extensive protective features make it an indispensable component for designers tackling the complex power challenges in next-generation automotive and industrial systems.

Keywords: Automotive Grade, Low Dropout Voltage (LDO), High Accuracy, Robust Protection, Low Quiescent Current.