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f28035AI管脚漏电严重



f28035的ai管脚,内部和比较器共用一个管脚的ai,新的芯片,上电几分钟就漏电,有1mA的漏电流。

不和比较器共用管脚的AI没有漏电。连续四个芯片都这样,怎么处理?