Hello everyone .
I am desiging a PCB baseon nrf52840. My use case should have the below features:
1) Get power suppbly from a LiPo battery ( for that I am thinking to power the nrf chip from a regulator with stable 3.3V otput)
2) Has the USB feauture (the board will have an SD memory card which i need to access via USB port like a memory stick, so to do that i need the USB feauture right? )
3) Since nrf52840 can provide 1.8V which i need for some sensors I am thinking of using that instead of an another voltage converter. So I need Vext too from the chip.
After reading the datashhet i concluded that the no4 schematic is the correct one.
So i started designed based on that, like I can show on the picure.
Am I on the right path ? Any suggestions are welcome because I am not so experienced on the electonic design.
Thank you !
