Other Parts Discussed in Thread: BQ24090, BQ24090EVM
Hi Team,
The pin description of /CHG tells it goes low (FET on) when charging and open drain (FET off) when no charging, some tests don't match the description:
The NTC is connected on TS pin, and /CHG pins is pulled up to 5V.
1. When BQ25101 is put into the ambient under 0℃ or over 60℃ for more than 30 minutes, then plug the power adapter, /CHG pin goes high whether the load is 3.6V electronical load or battery, and the current from power adapter is almost zero.
2. When BQ25101 is put into the ambient and plug the power adaptor, BQ25101 starts charging, then raise the temperature over 60℃ or lower the temperature below 0℃, /CHG pin keeps low with 3.6V load, but the current from power adapter is zero.
Could you please help confirm why sometimes /CHG keeps low when there is no current?
Thanks and Best Regards!
Hao