Infineon TLE42754: A 5-V Low-Drop Voltage Regulator for Automotive and Industrial Applications

In the demanding environments of modern automotive and industrial systems, ensuring a stable and reliable power supply is paramount. The Infineon TLE42754 stands out as a monolithic integrated low-drop voltage regulator, specifically engineered to deliver a fixed 5-V output with exceptional accuracy and robustness. This device is designed to power microcontrollers, sensors, and other critical logic circuits where voltage precision and system safety are non-negotiable.

A key feature of the TLE42754 is its very low dropout voltage, typically only 200 mV at a full load current of 450 mA. This high efficiency allows it to continue regulating even when the input voltage dips close to the output level, which is crucial during automotive cold-crank scenarios or industrial power sags. The device incorporates a wide input voltage range, from 5.5 V up to 42 V, making it resilient against harsh load-dump transients common in 12-V vehicle electrical systems.

Beyond basic regulation, the TLE42754 is built for maximum system reliability. It includes a comprehensive suite of protection features such as overcurrent limitation, overtemperature shutdown, and reverse polarity protection. The integrated short-circuit protection ensures the device and the load are safeguarded under fault conditions. Furthermore, its low quiescent current in both operational and standby modes makes it suitable for applications requiring always-on functionality, such as vehicle control units.

An essential aspect for automotive-qualified components is operational stability across a vast temperature range. The TLE42754 excels here, operating reliably within a junction temperature range of -40 °C to 150 °C. This ensures consistent performance from frigid cold starts to the high under-hood temperatures experienced in summer traffic. The regulator also offers an adjustable reset function with a programmable delay time, enabling it to monitor the output voltage and provide a defined reset signal to a microcontroller, thereby preventing erratic behavior during power-up and power-down sequences.

Its combination of durability, integrated protection, and high performance makes the TLE42754 an ideal choice not only for automotive body and convenience electronics but also for rugged industrial control systems, PLCs, and actuator drives.

ICGOOODFIND: The Infineon TLE42754 is a robust and highly reliable 5V voltage regulator engineered to excel in the challenging electrical environments of automotive and industrial applications. Its exceptional combination of low dropout voltage, wide input voltage range, comprehensive protection features, and extended temperature operation makes it a superior solution for powering critical electronic control units.

Keywords: Low-Dropout Regulator, Automotive Grade, Overcurrent Protection, Wide Input Voltage, Thermal Shutdown