onsemi NCV431BSNT1G: Precision Programmable Shunt Voltage Reference

The onsemi NCV431BSNT1G is a highly accurate, temperature-compensated shunt voltage reference integrated circuit, designed to deliver exceptional performance in a wide range of applications. As a member of the industry-standard TL431 family, it offers a programmable output voltage from Vref (2.5 V) to 36 V with just two external resistors. This programmability, combined with its low dynamic output impedance and sharp turn-on characteristics, makes it an incredibly versatile component for designers.

Housed in a space-saving SC-82 (TSOP-5) package, this device is engineered for applications where board space is at a premium. A key feature of the NCV431BSNT1G is its low operating cathode current of 60 µA, which significantly enhances its suitability for power-conscious and battery-operated systems. Its excellent stability and performance are maintained over a wide operating cathode current range (Ikat from 1.0 mA to 100 mA) and a temperature range of -40°C to +85°C.

The device is characterized by a high initial accuracy of 0.5% at 25°C, ensuring precise voltage regulation from the start. This precision is further bolstered by its low output noise, making it ideal for use as a reference voltage for switching power supplies, linear regulators, ADC (Analog-to-Digital Converter) and DAC (Digital-to-Analog Converter) circuits. Furthermore, it can be configured to function as a precision voltage comparator, providing over-voltage or under-voltage protection in system monitoring applications. Its robust design is also AEC-Q100 qualified for automotive applications, ensuring reliability in harsh environments.

ICGOOODFIND: The onsemi NCV431BSNT1G stands out as a robust, precise, and highly flexible solution for voltage reference needs. Its combination of programmability, low power consumption, high accuracy, and small form factor makes it an excellent choice for modern electronic design across automotive, industrial, and consumer markets.

Keywords: Programmable Voltage Reference, Shunt Regulator, High Accuracy, Low Operating Current, SC-82 Package.