TLE42344GHTSA1: A 5-V Low-Dropout Voltage Regulator for Automotive and Industrial Applications

In the demanding environments of modern automotive and industrial systems, stable and reliable power supply is non-negotiable. The TLE42344GHTSA1, a monolithic integrated low-dropout voltage regulator, is expressly designed to meet this critical need. Delivering a fixed 5-V output with a maximum current of 400 mA, this device stands out for its robust performance under harsh conditions.

A key feature of this LDO is its extremely low dropout voltage, typically 200 mV at 150 mA load. This high efficiency is paramount in automotive applications, where the electrical system voltage can dip close to the regulated output level, especially during cold-crank scenarios. The regulator ensures a stable 5-V supply even when the input voltage is as low as 5.5 V, preventing microcontroller resets and system failures.

Robustness and diagnostic capabilities are central to its design. The device incorporates comprehensive protection features, including current limitation, overtemperature shutdown, and reverse polarity protection. Furthermore, an error signal output pin (ERROR) provides immediate diagnostic feedback, signaling when the output voltage falls out of regulation due to overtemperature, short-circuit, or undervoltage conditions. This allows a host microcontroller to take appropriate action, enhancing system safety and reliability.

Its AEC-Q100 qualification makes it an ideal choice for automotive electronics, from body control modules and sensor supplies to infotainment systems. Similarly, in industrial settings, it provides a clean, stable voltage for PLCs, sensors, and control logic, operating reliably across a wide temperature range from -40 °C to 150 °C (TJ). Housed in a thermally enhanced PG-TO252-5 (DPAK) package, it offers excellent heat dissipation, which is crucial for maintaining performance under high load conditions.

ICGOODFIND: The TLE42344GHTSA1 is a premier solution for designers seeking a highly reliable, protected, and efficient 5-V power supply. Its combination of low dropout, extensive diagnostic features, and automotive-grade ruggedness makes it a superior choice for powering critical electronics in the most challenging environments on the road and on the factory floor.

Keywords: Low-Dropout Regulator, Automotive Grade, Reverse Polarity Protection, Diagnostic Output, AEC-Q100.