The NXP TL431BSDT is a three-terminal adjustable shunt regulator offering excellent temperature stability and output current handling capability up to 100mA. This versatile device is a staple in a wide range of power supply and voltage regulation applications, thanks to its high accuracy and ease of use.

As a programmable voltage reference, the TL431BSDT can be set to any value between Vref (approximately 2.5V) and 36V with the use of two external resistors. These resistors allow the user to customize the output voltage to suit a specific application, making the TL431BSDT a highly flexible component for designers.

Key Features:

• Adjustable Output: Voltage reference can be adjusted from 2.5V up to 36V, providing a versatile solution for various applications.
• High Stability: Features a typical temperature coefficient of only 50ppm/°C, ensuring reliable performance over a wide range of temperatures.
• Low Output Noise: Designed for low noise operation, making it ideal for sensitive electronics where a stable reference voltage is critical.
• Sink Current Capability: Capable of sourcing up to 100mA, suitable for a broad array of applications.
• Surface Mount Package: The SOT-23 package allows for efficient use of PCB space in compact electronic designs.

Applications:

• Switching power supplies
• Linear regulators
• Adjustable power supplies
• Battery chargers
• Voltage monitoring
• Automotive systems

The TL431BSDT from NXP is a reliable and precise shunt regulator that is essential for maintaining consistent voltage levels in a variety of electronic circuits. Its small footprint, combined with its robust design, makes it an excellent choice for space-constrained applications that require precise voltage regulation.