While debugging issues powering the Nano via the 40-pin header of the Carrier Board I realized that the 3v3 regulator IC (U9) is not the MP2384 as is shown on the schematic.
I searched the markings of the IC (EM 5841C 0LC0017), but have been unable to attain a datasheet. Can anyone provide information on the 3v3 regulator (U9) used on the Nano Carrier Board?
I was not experiencing this issue powering via the 40-pin header on some units that were unboxed several months ago. In case anything changed in the design/manufacturing of the carrier board: the serial number for the carrier board is 1422619051620.