Infineon BCR108WH6327: Low-Dropout Linear Regulator for General Purpose Switching Applications
The Infineon BCR108WH6327 is a highly integrated PNP low-dropout (LDO) linear regulator designed to deliver stable and clean power in a wide array of general-purpose applications. Encased in a compact SOT-143-4 surface-mount package, this device is engineered to provide a cost-effective and space-efficient solution for managing power in consumer electronics, industrial controls, and automotive subsystems.
A key feature of this regulator is its extremely low dropout voltage, which enables it to maintain regulation even when the input voltage is only marginally higher than the output. This characteristic is crucial for battery-powered devices, where maximizing runtime is essential as the battery voltage decays. The device offers a fixed output voltage of 3.3 V with a tight tolerance and can deliver a continuous output current of up to 100 mA, sufficient for powering microcontrollers, sensors, and other low-power ICs.
The BCR108WH6327 is designed for simplicity and reliability. It requires only two external capacitors for stable operation, simplifying board design and reducing the overall bill of materials. Furthermore, it incorporates built-in protection features such as internal current limiting and thermal shutdown, safeguarding both the regulator and the load from damage under fault conditions like short circuits or excessive power dissipation.
Its primary role in general-purpose switching applications often involves post-regulation. It is frequently used after a noisy switching regulator (SMPS) to provide a clean, low-ripple supply for noise-sensitive analog or RF circuits, combining the high efficiency of switching conversion with the superior output quality of a linear regulator.
The Infineon BCR108WH6327 is a robust, compact LDO regulator ideal for cleaning and stabilizing power in space-constrained designs, offering excellent performance with minimal external components.
Keywords: Low-Dropout Regulator, Infineon, Post-Regulation, Thermal Shutdown, SOT-143
