BCR108W: Infineon's Low-Drop Linear Regulator for Space-Constrained Applications

In the relentless pursuit of miniaturization, designers of modern electronics face the constant challenge of integrating robust power management into increasingly compact form factors. Addressing this need, Infineon Technologies has engineered the BCR108W, a highly integrated linear voltage regulator that delivers exceptional performance while occupying a minimal PCB footprint.

This device is part of Infineon’s innovative low-dropout (LDO) regulator family, packaged in an ultra-small SOT-223-4 package. Its primary advantage lies in its ability to maintain a stable output voltage even when the input voltage is only marginally higher than the output, a critical feature for battery-powered applications where voltage levels gradually decay. The low dropout voltage ensures extended operational life and maximizes energy efficiency.

Beyond its small size, the BCR108W is a pinnacle of integration. It incorporates essential components like a voltage reference, error amplifier, current limiter, and thermal shutdown protection directly onto the silicon. A key feature is the integrated short-circuit and overtemperature protection, which safeguards both the regulator itself and the downstream circuitry from potential damage, enhancing overall system reliability.

Furthermore, the inclusion of an enable pin provides designers with digital control over the regulator's operation. This allows for sophisticated power sequencing and the creation of power-saving modes by shutting down the regulator during idle periods, effectively reducing the total system's quiescent current to near zero.

The BCR108W is particularly suited for a vast array of applications where space is at a premium. It is an ideal solution for powering microcontrollers, sensors, and other low-power ICs in:

Consumer electronics such as smartphones, wearables, and IoT devices.

Automotive modules like infotainment systems and control units.

Industrial control systems and portable equipment.

ICGOOODFIND: The Infineon BCR108W stands out as an optimal power management solution, masterfully combining a minuscule form factor with high integration, excellent protection features, and digital control capability. It is an exceptional choice for designers prioritizing reliability and efficiency in the most space-constrained applications.

Keywords: Low-Dropout (LDO) Regulator, Space-Constrained, Integrated Protection, Enable Pin, SOT-223 Package.