Infineon BCR133SH6327: Low-Dropout Linear Regulator for Automotive and Industrial Applications

The Infineon BCR133SH6327 is a highly integrated low-dropout (LDO) linear regulator designed to meet the stringent requirements of modern automotive and industrial applications. As electronic control units (ECUs), sensors, and infotainment systems become more complex, the demand for stable, efficient, and robust power management solutions has never been greater. This device stands out by offering a compelling combination of performance, integration, and reliability.

A key feature of the BCR133SH6327 is its extremely low dropout voltage, which enables it to maintain a stable output even when the input voltage is very close to the desired output level. This is critical for automotive applications where the battery voltage can sag during engine cranking, ensuring that connected microcontrollers or sensors continue to operate without interruption. The device offers a fixed output voltage of 3.3 V with a maximum output current of 100 mA, making it ideal for powering low-power subsystems.

Beyond its core regulation function, the BCR133SH6327 is notable for its high level of integration. It incorporates essential protection features that are paramount in harsh environments. These include overcurrent protection (OCP) and overtemperature protection (OTP), which safeguard both the regulator itself and the downstream components from damage during fault conditions. Furthermore, its high immunity to load dump transients—a common voltage spike in automotive electrical systems—ensures unparalleled robustness.

The device is offered in a space-saving, surface-mount SOT-23 package, which is both cost-effective and suitable for automated PCB assembly. Its AEC-Q100 qualification for automotive applications guarantees its performance and reliability over a wide temperature range, typically from -40 °C to +150 °C for junction temperature. This makes it a trusted component for safety-critical systems under the hood, in the cabin, or on the factory floor.

ICGOOODFIND: The Infineon BCR133SH6327 is a robust and highly integrated LDO regulator that excels in providing stable power in the demanding electrical environments of automotive and industrial systems. Its low dropout voltage, built-in protection features, and automotive-grade qualification make it an excellent choice for powering critical low-power electronics.

Keywords: Low-Dropout Regulator, Automotive Grade, Overcurrent Protection, Load Dump Immunity, AEC-Q100.