I am working on a project with MCP73831 as batt charging module and MIC5219 as 3.3v regulator to power my system. Schematic as attached.
It works in the following situations:
1) when i plugged in usb and power the whole system
2) 3.3v power supply from other arduino board and attached to the V Batt and GND
But, the whole system do not work in the following situation:
1) when the system is solely powered up by li-ion poly battery.
Have anyone encountered this? please help.
Any help is greatly appreciated.