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TPS7A20: T PS7A20 静电测试无输出

Part Number: TPS7A20

Hi ti team,

进行4KV静电测试时, TPS7A20 从3.3V变成无输出.此时Vin=4.2V  Vout=0V.(且无法恢复).当用万用表测试EN PIN时,TPS7A20恢复正常,请问这是为什么?

电路如下: