Adjustable shunt reference — 2.495 V to 36 V, ±2.2%
The TL431IP is a three-terminal adjustable shunt regulator from the industry-standard TL431 family, offering a programmable output voltage from 2.495 V up to 36 V with a ±2.2% tolerance. It delivers up to 100 mA output current while the cathode current requirement is just 1 mA — typical for biasing the reference in a flyback converter's secondary-side feedback loop or as a precision comparator threshold.
Through-hole 8-DIP — legacy board fit
Housed in an 8-DIP (0.300", 7.62 mm) through-hole package, also designated 8-PDIP, the TL431IP suits prototype builds, rework-friendly layouts, and applications where through-hole assembly is preferred over surface-mount.