The TL431 is a programmable shunt voltage reference with guaranteed temperature stability over the entire temperature range of operation. The output voltage may be set to any value between 2.5V and 36V with two external resistors. The TL431 operates with a wide current range from 1 to 100mA with a typical dynamic impedance of 0.22Ω.
The TL431 is a programmable shunt voltage reference with an adjustable output voltage from 2.5 V to 36 V and a sink‑current capability of 1 mA to 100 mA. It offers a typical output impedance of 0.22 Ω and operates over a wide temperature range.
The document includes pin diagrams, absolute maximum ratings, detailed electrical characteristics, mechanical package dimensions for TO‑92 and SO‑8 packages, order codes, and a revision history.
| Adjustable output voltage | 2.5 V to 36 V |
|---|---|
| Sink current capability | 1 mA to 100 mA |
| Typical output impedance | 0.22 Ω |
The TL431 can be set to any output voltage between 2.5 V and 36 V.
It can sink current from 1 mA up to 100 mA.
The typical dynamic impedance is 0.22 Ω.