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LM21212-2: 5V输入，3.3V输出，上电后会出现短时间电压波动

SHUNDA ZHONG
Prodigy 20 points
Part Number: LM21212-2

LM21212-2电源芯片，5V输入，3.3V输出，实测电流3.5A，上电后会出现短时间电压波动，波形如下图，是什么原因导致的呢？该如何解决？

实测波形：

祝好！