Infineon TLE4263-2ES: A 5-V Low-Drop Voltage Regulator for Automotive Applications

In the demanding environment of modern automotive electronics, ensuring stable and reliable power supply is paramount. The Infineon TLE4263-2ES is a monolithic integrated low-drop voltage regulator specifically designed to meet these rigorous requirements. This IC delivers a fixed 5-V output voltage with a maximum output current of 150 mA, making it an ideal power management solution for a wide array of automotive applications, from body control modules and sensors to infotainment systems.

A key feature of this regulator is its very low dropout voltage, typically just 200 mV at full load. This low dropout characteristic is crucial in automotive environments, where the battery voltage can dip significantly during cold-crank or start-stop events. The device can maintain a stable output even when the input voltage is barely above the output level, ensuring continuous operation of critical systems when needed most.

The TLE4263-2ES is engineered for exceptional robustness. It incorporates comprehensive protection features that are essential for automotive survivability. These include overcurrent protection, which safeguards the IC and the load from damage during fault conditions, and overtemperature protection, which shuts down the device if the junction temperature exceeds safe limits. Furthermore, it features reverse polarity protection on the input, a common threat in automotive wiring.

Another significant advantage is its very low quiescent current in standby mode. This is increasingly important for reducing the overall energy consumption of the vehicle, helping to meet strict OEM requirements for minimizing battery drain, especially when the engine is off but the system remains in a standby state.

The device also offers excellent output voltage accuracy of ±2%, ensuring that sensitive microcontrollers and sensors receive a precise voltage supply. Combined with its low noise output and high ripple rejection, it provides a clean and stable power rail, which is vital for the performance of analog and digital circuits.

Housed in a PG-DSO-14 package, the TLE4263-2ES is designed for compact PCB layouts and offers good thermal performance. Its AEC-Q100 qualification confirms that it is built to the highest quality and reliability standards for automotive applications, capable of operating over a wide temperature range from -40 °C to 150 °C.

ICGOODFIND: The Infineon TLE4263-2ES stands out as a highly reliable, feature-rich 5-V voltage regulator. Its combination of low dropout voltage, comprehensive protection mechanisms, low quiescent current, and automotive-grade qualification makes it a superior and robust choice for powering electronic control units in the challenging automotive environment.

Keywords: Low-Dropout Regulator, Automotive Grade, Overcurrent Protection, Low Quiescent Current, AEC-Q100.