TLV431BSNT1G

TLV431BSNT1G, a low voltage shunt regulator, is one of the many voltage reference products offered by Texas Instruments. It is a three-terminal adjustable device, featuring a precisely controlled breakdown voltage (from 1V to 36V) and a wide range operational temperature (-40°C to +125°C). This device is a static voltage reference device with reference voltage outputs either in VBE or VRE formats. It is made with bipolar technologies which provide excellent temperature stability, output noise control and SOA.

The TLV431BSNT1G voltage reference has a wide range of applications in consumer, automotive and industrial sectors. As a low voltage reference, the device is commonly used in applications such as battery management, power supply sequencing, monitoring and protection, automotive ECUs & MCUs, ADCs and DACs for sensor systems. In its primary role, the device provides regulated and stable voltage in small packages despite variations that occur from temperature and load variations.

The TLV431BSNT1G employs a three terminal configuration which consists of a reference terminal (REF), an adjustable terminal (ADJ) and a ground terminal (GND). It breaks down electrons at a critical voltage on the REF pin, which is dependent upon the applied voltage on the ADJ pin. Generally, the breakdown voltage is equal to the applied voltage on the ADJ pin divided by the internal divider ratio of 10, where the ADJ terminal voltage is equal to 10 times the REF terminal voltage.

The TLV431BSNT1G device works by using a dividing network between the REF and ADJ terminals. The REF voltage is derived from a voltage divider of resistors R1, R2 and R3, where R1 and R2 are fixed and R3 is an external adjustable resistor. As the applied voltage on the ADJ pin increases, it eventually reaches a certain voltage known as the breakdown voltage, at which point the current across the output begins to rapidly increase (known as avalanche breakdown).

The device limits the amount of current flow through the REF and ADJ pins through a unique feature known as current limiting, which helps to protect the device and extends its operating life. The device is also designed with a temperature continuously adjusting resistor at the REF pin to compensate variations in the output due to temperature changes. This allows for superior temperature stability, even at extreme temperatures.

Overall, the TLV431BSNT1G voltage reference device is a reliable solution for applications that require a low voltage reference with excellent temperature stability and noise control. It is widely used in a variety of industrial, automotive and consumer electronics applications. It is a cost-efficient solution that helps to reduce the number of components in systems and improve the precision and accuracy of power supplies.