Infineon BCR135W: Low-Dropout Linear Regulator for Precision Automotive and Industrial Applications

The demand for highly stable and efficient voltage regulation in harsh electrical environments continues to grow, particularly within the automotive and industrial sectors. Addressing this need, the Infineon BCR135W stands out as a monolithic integrated low-dropout (LDO) linear regulator engineered for exceptional performance and reliability. This device is specifically designed to power sensitive loads where precision, stability, and robustness are non-negotiable.

A key feature of the BCR135W is its remarkably low dropout voltage, which ensures stable operation even when the input voltage is only marginally higher than the desired output voltage. This characteristic is crucial for battery-powered applications in vehicles, where voltage levels can fluctuate significantly, as it maximizes usable power and enhances overall system efficiency.

The regulator offers a fixed output voltage of 3.3V with a high accuracy of ±2%, providing a stable and precise supply for microcontrollers, sensors, and other critical logic components. Its ability to deliver a continuous output current of up to 150 mA makes it suitable for a wide range of low-power applications without sacrificing board space or requiring additional cooling.

Designed for the most demanding environments, the BCR135W incorporates comprehensive internal protection mechanisms. These include current limiting and thermal shutdown, which safeguard the device and the downstream circuitry from damage caused by overloads, short circuits, and excessive junction temperatures. Furthermore, its high immunity to load dump and transients aligns perfectly with stringent automotive standards like ISO 16750-2, ensuring unwavering operation in the noisy electrical environment of a modern vehicle.

The device's high power supply rejection ratio (PSRR) effectively filters out noise from the input source, making it an excellent choice for powering noise-sensitive analog and RF circuits. Housed in a space-saving, surface-mount SOT-223 package, the BCR135W combines a minimal footprint with excellent thermal performance, simplifying PCB design and enhancing reliability.

ICGOODFIND: The Infineon BCR135W is a robust and highly reliable LDO voltage regulator that sets a high standard for precision power management. Its combination of low dropout voltage, high accuracy, integrated protection features, and automotive-grade ruggedness makes it an superior choice for designers developing next-generation automotive electronics and industrial control systems where failure is not an option.

Keywords: Low-Dropout (LDO) Regulator, Automotive Grade, Precision Voltage Regulation, Thermal Shutdown, High PSRR.