Check marking for part#MP2009EE-3.3-LF-P ( so#832310 )

Hi Tech,
part#MP2009EE-3.3-LF-P
PO: 029-Z5300
D/C: 1914
Lot Code: A172113.1E

Our customer received above parts with marking shown " I9UK" as attached image.
No related marking information in datasheet.
Could you help check and advise if physical marking correct? What’s the marking meaning?
Thanks.

Hi david.dunn,

Please reach out to MPS NOW Remote Support or mpsnow@monolithicpower.com. We will be better able to help you there.

Regards,
Vinh Tran