Hello， I checked the data sheet of package information, and the device marking of  TPS62808YKAR is "-" symbol , and it meant that :There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.So we have no idea to check if the "P" is consistent  with the rule of top side marking.  Have you bought it from TI authorized distributor?  The only standard to confirm it true or false is if it is bought from our authorized distributor. 

I got it from mouser， Mouser asked you to confirm the screen printing problem. Your reply requires our users to confirm the situation with you. Is this a normal phenomenon? My incoming material is the real thing