STMicroelectronics TL431BL3T Adjustable Precision Shunt Regulator

The TL431BL3T from STMicroelectronics is a three-terminal adjustable shunt regulator with a guaranteed thermal stability over applicable temperature ranges. The output voltage can be set to any value between Vref (approximately 2.495 V) and 36 V with two external resistors. This device exhibits a wide operating current range of 1 mA to 100 mA with a typical dynamic impedance of 0.22 Ω.

The design of the TL431BL3T is optimized for improved performance in a wide range of applications. Its low output noise, coupled with its high accuracy and stability, makes it an ideal voltage reference for precision applications. The TL431BL3T is commonly used in power supplies, battery chargers, and voltage monitoring systems, providing a reliable reference voltage for various circuits.

Key features of the TL431BL3T include:

• Adjustable output voltage from 2.495 V to 36 V
• Operational from -40°C to 105°C
• Low dynamic output impedance: 0.22 Ω typical
• Output current capability of 1 mA to 100 mA
• Typical temperature stability of less than 50 ppm/°C
• Standard 0.5% and 1% tolerance on reference voltage available at 25°C
• Available in surface-mount TO-92 and SOT-23 packages

With its high precision and stability, the TL431BL3T is particularly suitable for use in high-performance feedback circuits, voltage regulation modules, and op-amp circuitry. The device's small footprint and surface-mount packaging options make it a convenient choice for space-constrained applications.

For designers looking for a reliable and adjustable precision shunt regulator, the TL431BL3T from STMicroelectronics offers a versatile solution that can be easily incorporated into a wide range of electronic products. The device's robustness and precision ensure consistent performance, making it a go-to component for engineers requiring a dependable voltage reference in their designs.