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LMZ14201: LMZ14201TZ-ADJ/NOPB package marking

Part Number: LMZ14201

Hi!  The package marking of our TI p/n LMZ14201TZ-ADJ/NOPB is the following:

1AAE02G3

LMZ14201

TZ-ADJ

The two last lines are the chip part number.  What is the meaning of the first line?

Regards,

Patrice