Infineon TLE4254EJS: A 5-V Low-Dropout Voltage Regower Regulator for Automotive Applications

In the demanding environment of modern automotive electronics, the stability and reliability of the power supply are non-negotiable. The Infineon TLE4254EJS stands out as a quintessential component designed specifically to meet these rigorous requirements. This integrated circuit is a 5-V low-dropout (LDO) voltage regulator that provides a fixed, precisely regulated output voltage from an input voltage supply ranging from 3.0 V to 42 V. Its ability to function with an extremely low voltage drop between input and output makes it exceptionally efficient, even as battery voltages fluctuate during cranking or load dumping scenarios.

A key feature of the TLE4254EJS is its robustness in harsh automotive environments. It is engineered to withstand the severe transients and noise typical in automotive power nets. The device incorporates critical protection functions, including overload, short-circuit, and overtemperature protection, ensuring operational integrity and preventing damage under fault conditions. Furthermore, its very low current consumption in standby mode makes it ideal for applications that are permanently connected to the battery, helping to comply with strict automotive quiescent current standards.

The regulator also includes an enable input that allows for external control of the operation, facilitating power management strategies to reduce overall system energy consumption. The high accuracy of the output voltage (±2%) guarantees that sensitive microcontrollers, sensors, and other logic circuits receive a stable supply, which is crucial for their correct operation.

Housed in a space-saving PG-SOT223-4 package, the TLE4254EJS offers excellent thermal performance and is well-suited for the compact and densely packed electronic control units (ECUs) found in today's vehicles. Its combination of a wide input voltage range, comprehensive protection features, and high precision makes it a trusted solution for powering systems in powertrain, safety, and body control applications.

ICGOOODFIND: The Infineon TLE4254EJS is a highly reliable, feature-rich LDO voltage regulator that delivers precise and stable 5-V power, making it an exemplary choice for the challenging electrical conditions of automotive systems.

Keywords: Low-Dropout (LDO) Regulator, Automotive Grade, Overvoltage Protection, Thermal Shutdown, Quiescent Current.