TL1431 is a precision programmable reference voltage source produced by Texas Instruments. It has high precision, low output impedance, fast response speed, low reference current and adjustable output voltage, which is suitable for applications such as onboard regulation, adjustable power supplies and switching power supplies in automotive, commercial and military temperature ranges.
The TL1431 is a precision programmable reference designed for automotive, commercial, and military temperature ranges. It allows the output voltage to be set to any value between approximately 2.5 V and 36 V using two external resistors. The device features a typical output impedance of 0.2 Ω and provides a sharp turn-on characteristic, making it suitable as a replacement for zener diodes in adjustable power supplies and onboard regulation applications.
| Initial Voltage Tolerance | 0.4% |
|---|---|
| Typical Output Impedance | 0.2 Ω |
| Fast Turnon Time | 500 ns |
| Sink Current Capability | 1 mA to 100 mA |
| Adjustable Output Voltage Range | Vi(ref) to 36 V |
| Operating Temperature (Commercial) | 0°C to 70°C |
| Operating Temperature (Automotive) | -40°C to 125°C |
The device has a typical output impedance of 0.2 Ω.