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TPS22901: Please advise what is the meaning of marking 3, 5 in the part number TPS22901YFPR?

Part Number: TPS22901

Please advise what is the meaning of marking 3, 5 in the part number TPS22901YFPR?

The top marking should be 3P 3, 5. Please see link for reference. Thanks

https://www.ti.com/packaging/docs/partlookup.tsp#divline

https://www.ti.com/lit/ds/symlink/tps22901.pdf?ts=1628751585760&ref_url=https%253A%252F%252Fwww.ti.com%252Fproduct%252FTPS22901