Switching regulator chip, power regulator, on and off switch, output voltages

 L6986 Series 38 V 2 A 30 uA Synchronous Step-Down Switching Regulator-HTSSOP-16

https://www.futureelectronics.com/p/semiconductors--analog--regulators-reference--switching-regulators/l6986htr-stmicroelectronics-7147928