Infineon IFX91041EJV33XUMA1: High-Performance LDO Voltage Regulator for Automotive and Industrial Applications

In the demanding worlds of automotive electronics and industrial automation, power integrity is non-negotiable. Sensitive microcontrollers, sensors, and communication modules require a clean, stable, and reliable voltage supply to function correctly amidst electrical noise, wide temperature fluctuations, and sudden load changes. Addressing these critical needs, the Infineon IFX91041EJV33XUMA1 stands out as a high-performance Low-Dropout (LDO) voltage regulator engineered for maximum reliability and efficiency.

This LDO regulator is designed to deliver a fixed 3.3V output from an input voltage range of 3.5V to 40V, making it exceptionally versatile. Its very low dropout voltage is crucial for applications where the input voltage closely approximates the desired output, ensuring stable operation and maximizing energy efficiency. A key feature of this component is its extremely low quiescent current, which minimizes power loss when the system is in standby or sleep mode—a critical requirement for always-on automotive systems and battery-powered industrial equipment.

Robustness and protection are at the core of its design. The IFX91041EJV33XUMA1 is built to withstand the harsh environments typical of its target applications. It offers comprehensive protection features including over-current protection (OCP), over-temperature shutdown (TSD), and reverse polarity protection. Furthermore, its high immunity to load dump transients (a common automotive electrical hazard) and ESD events ensures uninterrupted operation, enhancing the overall durability of the end product.

The device also excels in providing superior power quality. It features a very high Power Supply Rejection Ratio (PSRR) and low output noise, which are essential for powering noise-sensitive components like RF transceivers and AD converters without degradation in performance. Packaged in a thermally enhanced, space-saving DSO-8 package, it efficiently dissipates heat, allowing for reliable operation under high load conditions across the entire automotive temperature range (-40°C to +150°C junction temperature).

ICGOOODFIND: The Infineon IFX91041EJV33XUMA1 is a premier choice for designers seeking a robust, high-performance LDO regulator. It masterfully combines a wide input voltage range, ultra-low quiescent current, and extensive protective features to deliver clean, stable power for the most demanding automotive and industrial systems, ensuring longevity and reliability.

Keywords: LDO Voltage Regulator, Automotive Grade, Low Quiescent Current, High PSRR, Reverse Polarity Protection.