我在用BQ21040DBVR给电池充电,供电电压5V。电池VBAT脚接了分压电阻,来检测电池是否插入。
问题是,接上5V后,当电池未插入时,VBAT仍然有电压,这样的话就没法通过分压电阻来检测电池是否插入了
请问,有没有供电5V和输出VBAT隔开的芯片,使供电后,电池未插入时,VBAT脚为0V ?
或者有其他可以检测电池插入的方法?
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