Programmable linear regulator, Shunt regulators, series regulators, divider network

 LM317 Series 1.2 V 1.5 A Positive Adjustable Voltage Regulator - D2PAK

https://www.futureelectronics.com/p/semiconductors--analog--regulators-reference--linear-regulators/lm317d2t-tr-stmicroelectronics-5124567