This thread has been locked.
If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.
1、如上电路，PG\为低电平，CHG\是高电平，
2、我用稳压电源给电池充电，我把输入电压从0V开始上调，调到3..7V左右然后一直调到9V都可以开始充电，但是我如果直接用5V输入，就不能充电，这是为什么呢？
已经解决，那个USB短接不需要接地，接地就出现上面的现象
