Infineon BCR108: A Low-Drop Linear Regulator for Space-Constrained Applications
In the relentless pursuit of miniaturization, designers of modern electronic devices face the constant challenge of integrating robust power management into increasingly compact form factors. The Infineon BCR108 stands out as a purpose-built solution, offering a compelling blend of integration, efficiency, and reliability for space-constrained applications.
At its core, the BCR108 is a low-dropout (LDO) linear regulator capable of delivering a fixed output voltage of 3.3V or 5.0V with a maximum output current of 100 mA. Its defining characteristic is its exceptionally small footprint, housed in an ultra-miniature SOT-143-4 surface-mount package (SC-74). This makes it an ideal choice for powering low-current subsystems such as microcontrollers, sensors, and logic circuits on densely populated PCBs where every square millimeter is precious.
A key advantage of the BCR108 is its very low dropout voltage. With a typical dropout of just 100 mV at 50 mA, it can continue to regulate the output voltage effectively even when the input voltage dips very close to the desired output level. This feature is crucial for maximizing battery life in portable devices and for applications powered by fluctuating or decaying power sources, ensuring stable operation for as long as possible.
Beyond its small size, the BCR108 integrates critical functionality that would otherwise require external components. Most notably, it features a built-in base-emitter resistor on its integrated PNP pass transistor. This significant level of integration simplifies circuit design, reduces the overall bill of materials (BOM), and further saves valuable board space. The regulator is also designed for stability with very small ceramic output capacitors, enhancing its performance and ease of use.
Furthermore, the device includes essential protection mechanisms like internal current limiting and thermal shutdown. These features safeguard both the regulator and the downstream load from damage caused by fault conditions such as short circuits or excessive power dissipation, thereby improving the overall robustness and longevity of the end application.
From smart home gadgets and wearables to industrial sensors and automotive modules, the BCR108 provides a simple, effective, and highly space-efficient power management solution. Its combination of integrated features, low dropout performance, and a minuscule package addresses the core needs of modern electronic design.
ICGOOODFIND: The Infineon BCR108 is a highly integrated, miniature low-dropout regulator that excels in space-constrained designs. Its standout features include an ultra-small SOT-143 package, a built-in base-emitter resistor for simplified design, and excellent low-dropout performance, making it a top-tier choice for powering low-current loads efficiently and reliably.
Keywords: Low-Dropout Regulator (LDO), Space-Constrained, Miniature Package, Integrated Design, Current Limiting.
