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BQ25504 VBAT_OK 输出电平异常问题

当VBAT 的电压达到设定的  OK_HYST 值得时候,VBAT_OK输出高电平,但是偶尔会掉到低电平,不知是什么原因引起的?

黄色为VBAT_OK,  绿色为VBAT