Infineon TLF80511EJV50: A 50V Low-Dropout Linear Voltage Regulator for Demanding Applications
In the realm of power management, providing stable and clean voltage rails from higher, noisy input sources is a fundamental challenge. The Infineon TLF80511EJV50 addresses this need with precision and robustness, standing out as a high-performance 50V Low-Dropout (LDO) linear voltage regulator. This device is engineered to deliver a fixed 5.0V output with a maximum current of 150mA, making it an ideal solution for a wide array of automotive, industrial, and communications systems where reliability is non-negotiable.
A key advantage of the TLF80511EJV50 is its remarkably low dropout voltage. Even with an input voltage as low as 5.5V, it can continue to regulate the output at 5.0V, ensuring stable operation even as input sources sag or fluctuate. This feature is critical in automotive environments, where load dump and cold-crank conditions can cause significant voltage variations that would disable lesser regulators.
Beyond its basic regulation capability, this LDO is packed with sophisticated protection and diagnostic features. It includes built-in over-current protection, thermal shutdown, and reverse polarity protection, safeguarding both the IC itself and the sensitive load it powers. Furthermore, an error flag output pin provides a clear diagnostic signal, alerting the system microcontroller to any output voltage deviations, thus enabling predictive maintenance and enhanced system reliability.
The device also excels in its ability to reject noise from the input supply. Its high Power Supply Rejection Ratio (PSRR) ensures that ripples and disturbances on the input line are not passed through to the output, resulting in an exceptionally clean and stable 5V supply. This is paramount for powering noise-sensitive components like sensors, microcontrollers, and RF modules.
Housed in a space-saving, surface-mount PG-TO263-5-11 package, the TLF80511EJV50 offers excellent thermal performance, efficiently dissipating heat into the PCB. Its AEC-Q100 qualification confirms its suitability for the harsh operating conditions of automotive electronics, including wide temperature ranges and rigorous reliability standards.
ICGOOODFIND: The Infineon TLF80511EJV50 is a robust and highly integrated LDO solution that sets a high standard for power management in demanding 50V applications. Its combination of a wide input voltage range, low dropout, comprehensive protection suite, and diagnostic capabilities makes it an exceptional choice for designers seeking uncompromising performance and reliability.
Keywords: Low-Dropout (LDO), Voltage Regulator, 50V Input, AEC-Q100, Power Supply Rejection Ratio (PSRR)
