Infineon TLE42644GHTSA3: 5V Low-Drop Voltage Regulator for Automotive Applications

The demand for robust and reliable power management solutions in the automotive industry continues to grow, driven by the increasing complexity of electronic control units (ECUs), sensors, and infotainment systems. The Infineon TLE42644GHTSA3 stands out as a high-performance 5V low-dropout (LDO) linear voltage regulator specifically engineered to meet the stringent requirements of automotive applications.

This regulator is designed to deliver a fixed 5V output voltage with a maximum output current of 400 mA, making it suitable for powering microcontrollers, sensors, and other critical logic components. A key feature of the TLEON product family, this device is characterized by its very low dropout voltage, typically 200 mV at 150 mA load. This efficiency is crucial in automotive environments, where the battery voltage can dip significantly during cold-crank or start-stop scenarios, ensuring stable operation even when the input voltage is close to the output level.

Robustness and reliability are at the core of its design. The TLE42644GHTSA3 is qualified for the demanding AEC-Q100 standard, guaranteeing its performance across the wide automotive temperature range (-40°C to 150°C junction temperature). It incorporates comprehensive protection features, including overcurrent protection (OCL), overtemperature shutdown (TSD), and reverse polarity protection. Furthermore, the device offers an error signal output (ERROR pin) that can warn the microcontroller of undervoltage or overtemperature conditions, enabling sophisticated system monitoring and fail-safe strategies.

Housed in a space-saving PG-TO263-5-11 (DPAK-5) package, the regulator is optimized for automated assembly and provides excellent thermal performance, which is vital for dissipating heat under high load conditions. Its very low quiescent current in normal operation helps to minimize the drain on the vehicle's battery, contributing to improved fuel efficiency and reduced emissions.

ICGOOODFIND: The Infineon TLE42644GHTSA3 is an exemplary power management solution that combines high accuracy, low dropout, and extensive diagnostic and protection features. Its automotive-grade qualification makes it an ideal, dependable choice for ensuring a stable 5V supply in the harsh electrical and environmental conditions of modern vehicles.

Keywords:

Automotive LDO Regulator

AEC-Q100

Low Dropout Voltage

Power Management IC

Voltage Regulator 5V