TL431 2.5V to 36V Shunt Voltage Regulator

TL431 Adjustable Precision Shunt Voltage Regulator – 2.5V to 36V Output

The TL431 is a three-terminal adjustable shunt voltage regulator offering a precise 2.5V reference and a programmable output voltage range from 2.5V to 36V. This high-performance IC provides exceptional temperature stability and low dynamic output impedance of just 0.2Ω, making it an ideal alternative to Zener diodes in voltage regulation, overvoltage protection, and power supply control circuits.

Capable of sinking up to 100mA current, the TL431 supports both linear and switching power applications, including SMPS, battery chargers, and precision current limiters. Its low output noise, fast response, and compatibility with optocouplers make it perfect for use in isolated feedback loops and high-accuracy voltage references. With its ability to be fine-tuned via two external resistors, the TL431 ensures flexible, reliable, and efficient power management in demanding environments like industrial controls, automotive electronics, and instrumentation.

Key Specs Voltage Reference: 2.5V (adjustable up to 36V) Output Current: Up to 100mA Impedance: Low 0.2Ω dynamic output Package: TO-92 / SOT-23 / SOT-89 (varies by model) Accuracy: ±1% (depending on version) Operating Temp: -40°C to +125°C Applications: SMPS, battery chargers, overvoltage protection, precision current limiters, optocoupler feedback, industrial electronics MOQ: 30 pieces Brand: TI / ON Semi / Fairchild / Other major OEMs Compliance: RoHS & Pb-Free