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WEBENCH® Tools/LMR23610: IC footprint area strange

Part Number: LMR23610

Tool/software: WEBENCH® Design Tools

Hi Webench Team,

First off I wanted to say that I love the tool and I'm blown away at all the incredible features and functionality that is included for free!! 

I was using Webench to analyze the total system footprint of the LMR23610 and noticed the area for the ic seems a bit strange. In the footprint column on the BOM tab  says "57"  for the IC, however, there are no units here. Also looking at the datasheet I can only come up with a total area of 31(5 X 6.2)mm. Can you all please shed some light on why these 2 numbers are different. 

Here is my design link: https://webench.ti.com/appinfo/webench/scripts/SDP.cgi?ID=790EFA679D08AA6F