Team-
According to the LM3269 data sheet, which then refers to AN-1112 , it's better to mount the LM3269 on a board with < 1 oz Cu (See page 5 of AN-1112).
Since this is a 0.5 mm ball pitch, it seems like it would be fine to mount on a standard 1 oz Cu board.
Please confirm that the LM3269 can be mounted to a PCB plated with 1 oz Cu.
Thanks, best, S. Dunbar, AFA Colorado