Voltage LDO Regulator, programmable regulator, Low dropout linear regulator

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

https://www.futureelectronics.com/p/semiconductors--analog--regulators-reference--linear-regulators/lm317d2tr4g-onsemi-8485302