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LMZ10504: 工作过程中发生异常短路

Part Number: LMZ10504

1、LMZ10504连续工作一段时间后,发现芯片输出突然对地短路,具体原因不详,初步判断芯片内部MOS管异常(VIN=5V,VOUT=1.8V,Iout=2A)

2、芯片从TI官网是上购买

3、出现异常的具体原因是什么?是否有什么规避措施?