Infineon TLE75602ESH: A High-Current, Low-Drop Voltage Regulator for Automotive Applications

The relentless evolution of automotive electronics demands power management solutions that are not only highly efficient and reliable but also robust enough to withstand the harsh electrical environment of a vehicle. Addressing these stringent requirements, the Infineon TLE75602ESH emerges as a premier low-dropout (LDO) linear voltage regulator engineered specifically for the automotive sector. This IC is designed to deliver a stable, clean voltage rail to critical systems such as engine control units (ECUs), sensors, and infotainment systems, even under the most demanding conditions.

A defining characteristic of the TLE75602ESH is its impressive output current capability of up to 150 mA combined with an exceptionally low dropout voltage. This low dropout feature is crucial for automotive applications, as it allows the regulator to maintain a stable output voltage even when the input voltage dips very close to the desired output level. This ensures continuous and reliable operation during critical events like crank start scenarios, where the vehicle's battery voltage can sag significantly.

Beyond its core regulation function, the TLE75602ESH is packed with integrated protection and diagnostic features that are essential for functional safety and longevity. These include:

Overcurrent Protection: Safeguards the regulator and the load from damage in the event of a short circuit or excessive current draw.

Overtemperature Shutdown: Automatically disables the output if the junction temperature exceeds safe limits, preventing thermal destruction.

Reverse Polarity Protection: Enhances system robustness by withstanding a reversed battery connection.

Enable Pin & Power-Good Output: The enable pin allows for external control of the regulator, facilitating power sequencing. The power-good output provides a diagnostic signal to the microcontroller, confirming that the output voltage is within regulation.

Housed in a space-saving PG-SOT223-5 package, the device offers excellent thermal performance, which is vital for dissipating heat at high load currents. Its AEC-Q100 qualification guarantees that it meets the rigorous quality and reliability standards required for automotive components, ensuring performance across a wide temperature range.

ICGOOODFIND: The Infineon TLE75602ESH stands out as a robust and highly integrated power management solution. Its combination of high current output, very low dropout voltage, and a comprehensive suite of protection features makes it an ideal, reliable choice for powering a wide array of electronic control units in modern automobiles, ensuring stability and safety throughout the vehicle's lifespan.

Keywords: Low-Dropout (LDO) Regulator, Automotive Grade (AEC-Q100), High Current Output, Cranking Stability, Protection Features.