Infineon TLF80511EJV50XUMA1: A Robust 300 mA Low-Dropout Regulator for Demanding Automotive Environments

The relentless drive towards greater electrification in the automotive industry demands power management solutions that are not only efficient but also exceptionally reliable. The Infineon TLF80511EJV50XUMA1 stands out as a premier 300 mA Low-Dropout (LDO) voltage regulator engineered specifically to meet the stringent requirements of automotive applications, from infotainment and advanced driver-assistance systems (ADAS) to body control modules.

This LDO regulator is designed to provide a stable and clean 5.0 V output voltage from an input voltage range of 3.0 V to 40 V. Its wide input range is a critical feature, allowing it to handle challenging conditions such as load-dump pulses and cold-crank scenarios that are commonplace in 12 V automotive electrical systems. The device's low dropout voltage ensures efficient operation even when the input voltage is only marginally higher than the output, preserving battery life and minimizing heat generation.

Beyond its core regulation function, the TLF80511EJV is packed with protective features that guarantee system integrity. It includes built-in over-current protection (OCP) and over-temperature protection (OTP), safeguarding both the regulator and the downstream components from damage during fault conditions. Furthermore, the enable (EN) pin offers digital control, allowing microcontrollers to power down the regulator for reduced quiescent current in standby or sleep modes, which is vital for modern vehicles with always-on ECUs.

Housed in a space-saving, thermally enhanced PG-SOT263-6 package, this regulator is suitable for space-constrained applications. Its AEC-Q100 qualification ensures it meets the rigorous quality and reliability standards for automotive components, operating reliably over a junction temperature range from -40 °C to +150 °C.

ICGOODFIND: The Infineon TLF80511EJV50XUMA1 is an exemplary power management solution, offering automotive-grade robustness, high efficiency, and comprehensive protection in a compact form factor. It is an ideal choice for designers seeking a reliable voltage rail for noise-sensitive applications in the harsh automotive environment.

Keywords: Automotive LDO Regulator, 300 mA, Low-Dropout Voltage, AEC-Q100 Qualified, Load-Dump Protection