ON Semiconductor TL431BIDG Precision Programmable Reference

The ON Semiconductor TL431BIDG is a versatile, precision programmable voltage reference that can be used in a wide range of applications. This three-terminal adjustable shunt regulator is well-suited for driving optocouplers, voltage monitoring, and as an adjustable precision zener diode in a multitude of applications where a reliable voltage reference is required.

With a nominal voltage reference of 2.495 volts, the TL431BIDG can be programmed with two external resistors to provide a specified output voltage ranging from Vref up to 36 volts. This flexibility allows designers to use this device in various configurations, catering to different voltage requirements without the need for multiple different voltage references.

The TL431BIDG offers excellent temperature stability and a low output noise voltage, making it ideal for precision applications. Its typical temperature coefficient is as low as 50 ppm/°C, which ensures that the voltage reference remains consistent across a wide temperature range. This feature is particularly important in applications where temperature fluctuations are common and can impact the performance of the electronic system.

The device is also characterized for operation from −40°C to +125°C, allowing it to be used in environments with extreme temperature conditions. The TL431BIDG comes in a standard 8-lead SOIC package, which is widely used and suitable for automated assembly processes, making it a convenient choice for mass production.

Its output current capability ranges from −100 mA to 150 mA, providing ample drive capability for most applications. Moreover, the TL431BIDG features a typical dynamic output impedance of 0.22 ohms, which contributes to its stable and predictable operation under varying load conditions.

ON Semiconductor has designed the TL431BIDG with safety in mind, incorporating overcurrent protection which ensures the device remains functional and reliable even under fault conditions. This makes the TL431BIDG a robust choice for critical applications where reliability is paramount.

In conclusion, the ON Semiconductor TL431BIDG is a highly reliable, flexible, and precise adjustable voltage reference that can meet the needs of a broad spectrum of electronic applications. Its stability, programmability, and robustness make it an excellent choice for designers looking for a dependable voltage reference solution.