Infineon TLE4262G: A 5-V Low-Drop Fixed Voltage Regulator for Automotive and Industrial Applications

In the demanding environments of modern automotive and industrial electronics, the stability and reliability of the power supply are non-negotiable. The Infineon TLE4262G stands out as a quintessential solution, a 5-V low-dropout (LDO) fixed voltage regulator engineered specifically to meet the stringent requirements of these applications. This monolithic integrated circuit is designed to deliver a precise, stable 5-V output from an input voltage up to 45 V, making it an indispensable component for powering microcontrollers, sensors, and other critical logic circuits.

A key feature of the TLE4262G is its remarkably low dropout voltage, typically just 400 mV at a full load current of 150 mA. This efficiency is crucial in automotive systems, such as during cold-crank conditions where the battery voltage can dip significantly. The device ensures that the connected electronics continue to operate without interruption, even when the input voltage is very close to the output level, thereby enhancing overall system resilience.

Robust protection features are integral to its design, catering to the harsh electrical environments found under the hood or on the factory floor. The IC includes built-in over-current protection, which safeguards the regulator and the load from damage during fault conditions. Furthermore, it incorporates overtemperature protection that shuts down the device if the junction temperature exceeds safe limits, automatically restarting once it has cooled. An especially critical feature for automotive use is its reverse polarity protection, allowing it to withstand a temporary reverse voltage at its input, a common hazard during battery misconnection.

Beyond protection, the TLE4262G excels in performance. It offers a high level of accuracy, with the output voltage maintained within ±2% tolerance. Its very low quiescent current in standby mode makes it suitable for applications requiring always-on functionality without excessive battery drain. The device is also designed for excellent electromagnetic compatibility (EMC), a mandatory requirement for automotive electronics to prevent interference with sensitive radio and communication systems.

Packaged in a robust PG-TO263-5-11 (DPAK) or PG-TO252-5-11 (TO-263), the regulator is built for mechanical durability and efficient heat dissipation. Its AEC-Q100 qualification confirms its compliance with the rigorous quality standards of the automotive industry, guaranteeing performance and longevity even across extreme temperature ranges from -40 °C to 150 °C.

ICGOODFIND: The Infineon TLE4262G is a robust and highly reliable 5-V LDO voltage regulator, purpose-built for the challenging conditions of automotive and industrial markets. Its combination of low dropout voltage, comprehensive protection mechanisms, and high accuracy makes it a superior choice for designers seeking to ensure unwavering power integrity in their systems.

Keywords: Low-Dropout Regulator, Automotive Grade, Reverse Polarity Protection, AEC-Q100, Thermal Overload Protection.