I am struggling for about three days now to find the part number for U118. Tried every online database, but I still cannot figure it out. Marking is
14YN/H 891 A981.
Any ideas about which manufacturer uses this format?
The chip in question is a buck regulator in a DFN-8 2x2mm package, pins 1-2 are VIN, and 7-8 are SW. VIN is 5V, VOUT not measured as U118 is now toasted. The board is manufactured by a South Korean supplier, and the part in question sits on the cheaper spectrum. They previously used a dual buck regulator (ADP5034) and changed to this obscure one for the mass-produced version.
Found one part from Renesas which matches the package but the pinout is different.