Part Number: TPS56637
I spent lots of time to figure out the dimensions of this IC (http://www.ti.com/lit/ds/symlink/tps56637.pdf). Nothing makes sense!! Whoever drawn this was VERY unprofessional. At the first look, you think everything is given to you (off course in a very strange way!) but no it is not true. Lot's of information is missing. For example, what are the distance of pin 1 or 4 from the bottom and top edges?
Just saying this could be way simpler than what it is now.
Bob