ON Semiconductor TL431CDR2G Adjustable Precision Shunt Regulator

The ON Semiconductor TL431CDR2G is a highly versatile adjustable precision shunt regulator that offers a solution for a wide range of voltage regulation requirements in various electronic applications. This three-terminal device operates as a precision Zener diode with an adjustable voltage reference, which can be set from 2.495 volts to 36 volts with the use of two external resistors. The TL431CDR2G is commonly used in power supplies, battery chargers, and voltage monitoring applications due to its flexibility and accuracy.

Encased in an SMD (Surface-Mount Device) SOP-8 package, the TL431CDR2G is designed for automated assembly processes and is ideal for high-density PCB (Printed Circuit Board) designs. Its small footprint allows for efficient use of board space without compromising performance. The device features a typical dynamic output impedance of 0.22 ohms, providing stable reverse breakdown voltage precision over a wide range of operating temperatures (-40°C to +85°C).

This adjustable shunt regulator boasts a low output noise voltage, making it suitable for noise-sensitive applications. It also offers excellent thermal stability and a fast turn-on response, ensuring reliable performance under varying conditions. The TL431CDR2G is capable of sourcing up to 100mA of output current, and with its low cathode current at the minimum operating voltage, it is an energy-efficient choice for portable and battery-powered devices.

ON Semiconductor's commitment to quality is evident in the TL431CDR2G's design, which includes built-in thermal overload protection and output transition SOA (Safe Operating Area) protection. These features safeguard the device against adverse conditions and ensure long-term reliability. The device is also characterized for operation from -40°C to +125°C, providing a robust solution for industrial-grade applications.

In summary, the TL431CDR2G from ON Semiconductor is a highly reliable, adjustable precision shunt regulator that offers excellent performance for a variety of voltage regulation tasks. Its small package, low noise, and energy efficiency make it an excellent choice for designers looking to optimize their electronic systems.