Infineon BCR135SH6327: A Comprehensive Technical Overview

The Infineon BCR135SH6327 is a highly integrated, monolithic linear voltage regulator designed to deliver exceptional performance in a compact SMD package. As part of Infineon's extensive portfolio of small-signal transistors and integrated circuits, this device is engineered to provide a simple, cost-effective, and space-saving solution for voltage regulation and current sinking in a wide array of automotive, industrial, and consumer applications.

At its core, the BCR135SH6327 is a negative-voltage regulator with a fixed output voltage of -5 V. It is capable of delivering a continuous output current of up to 100 mA, making it suitable for powering low-power circuitry such as sensors, op-amp supplies, and interface modules. The device integrates a series pass transistor, a voltage reference unit, and an error amplifier on a single chip, ensuring stable and reliable operation.

Housed in the ultra-miniature SOT-363 (SC-88) package, this regulator is a perfect fit for space-constrained PCB designs. Its standout feature is its extremely low dropout voltage. Even with such a small footprint, it maintains excellent regulation characteristics. A critical built-in protection feature is its integrated short-circuit protection, which safeguards the device and the downstream circuitry from damage in fault conditions, enhancing system robustness and longevity.

Furthermore, the device requires only a minimal number of external components—typically just two capacitors for input and output filtering—to form a complete voltage regulator circuit. This significantly reduces the overall bill of materials (BOM) and simplifies board layout. Its design prioritizes low noise output, which is crucial for powering sensitive analog components.

ICGOODFIND: The Infineon BCR135SH6327 stands out as an exceptionally compact and reliable negative voltage regulator. Its integration of critical functions like short-circuit protection into a minuscule SOT-363 package, combined with its low dropout voltage and minimal external component requirement, makes it an ideal choice for designers seeking to optimize board space and enhance system reliability in modern electronic applications.

Keywords: Negative Voltage Regulator, SOT-363 Package, Low Dropout Voltage, Short-Circuit Protection, 100 mA Output Current.