您好,
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HI
直接比较两个芯片的datasheet即可,两者是一样的。
PTPS22998应该是某客户定制的产品,TI这类芯片都是TPS前缀。
HI
购买的时候买TPS22998, 不要购买PTPS22998。
(PTPS22998,如上所说,可能是定制型号)