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BQ24780S问题求助



这个电池管理芯片不知道怎么回事充不进去电,电路原理图如下,电池是两节串联的:

寄存器的配置也按Datasheet的要求配置了:

0x12H    0xE108

0x14H    0x0400

0x15H    0x20D0

0x39H    0x1800

0x3FH    0x1000

按照Datasheet的充电条件检查,各项条件都是满足的,电池电压降到了7V左右,但就是不充电,请帮忙分析一下原因,谢谢!