The TL431CDBVR is a three-terminal adjustable shunt regulator manufactured by Texas Instruments. It is designed to provide a precision voltage reference 1.24V across a wide range of temperatures and load conditions, with an adjustable output voltage of up to 36V. The device features a minimal 1.2mA drive current, and high output accuracy of ±2%. The low quiescent current makes it suitable for battery-powered applications, while its self-contained correction circuitry ensures tight output voltage regulation. Additionally, it offers superior thermal stability, with low thermal drift and no needed external compensation.