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Hi Wei,
原理图看起来没有问题。
在电路上,首先确保thermal pad充分接地(即thermal pad 与焊盘之间的焊锡足够且均匀分布),这一点很重要,因为thermal pad是芯片唯一接地的地方,然后需要保证上电时序满足datasheet中section7.7的要求。保证在VDD33和VDD电源正常之后,GRSTz的低电平时间至少为3ms.
另外,建议增大引脚5和8的上拉电阻的值,建议为4.7K。