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BQ25886: BQ25886充电禁用

Part Number: BQ25886

BQ25886充电电路,在测试过程中本来工作都很正常,在给电池充电过程中突然STAT的LED灯开始闪烁,REGN电压为5.2V,电源电压正常5V,电池电压(2节)7.4V,电池断开时SYS电压为6.4V,电路应该原理上没问题,之前都能正常工作,请帮忙分析一下可能是哪里出了问题