The TL431 is a three-terminal adjustable shunt regulator offering excellent temperature stability. This device has a typical dynamic output impedance of 0.2Ω. The device can be used as a replacement for zener diodes in many applications.
Pin Configuration
| Pin Number | Pin Name | Description |
| 1 | Reference | This pin sets the voltage rating of the Zener diode. |
| 2 | Anode | Anode of the equivalent Zener diode |
| 3 | Cathode | The cathode of the equivalent Zener diode |
Features
- The output voltage can be adjusted to 36V
- Low dynamic output impedance, its typical value is 0.2Ω
- Trapping current capability is 1 to 100mA
- Low output noise voltage
- Fast on -state response
- The effective temperature compensation in the working range of full temperature
- The typical value of the equivalent temperature factor in the whole temperature scope is 50 ppm/°C
- Available in To-92(3-pin) Package
Note: Complete Technical Details can be found on the TL431 datasheet given at the end of this page.
Applications:
- Shunt Regulator
- High-Current Shunt Regulator
- Precision Current Limiter
