TL431

From the shop's description

TL431 is a high-quality electronic component designed for Arduino, prototyping, and educational electronics. Voltage Reference Adjustable Precision Shunt Regulator The TL431 is a three-terminal adjustable precision shunt voltage regulator integrated circuit. With the use of an external voltage divider, a TL431 can regulate voltages ranging from 2.5 to 36 V, at currents up 100 mA. It’s perfect for DIY makers, students, and anyone building custom electronic circuits or STEM kits.