sorry to bother.
as the title.
please provide recommend layout footprint of OPA452.
another question, KTW thermal pad (as attachment picture)
this pad should connect to which pin ( e.g. V+ , V- ...)
Hello,
Please see below for the footpring CAD drawing in .bxl format for the OPA452's TO-263 package:
https://webench.ti.com/cad/dlbxl.cgi/TI_BXL/OPA452_KTW_7.bxl
Regarding the tab, it is electrically connected to negative supply (V-) but I want to note that the tab is not designed to carry a large amount of current. We recommend that the tab be soldered directly to the copper on your board for best thermal performance - see below for additional information on heat sinking the OPA452:
Christopher Stemple
Product Marketing - Precision Amplifiers
Hi, Christopher：
Thanks for your reply, I provided the bxl file to customer already, after they convert bxl file by UltraLibrarian, they got 9 type footprints from the bxl flie, so customer hope we provide the footprint dimension like the attachment picture. 
Do we have the dimension files like the picture as above??
The BXL file does contain the footprint you're looking for - this is the "Print_Normal" view as shown in UltraLibrarian:
Please ensure that you've only checkmarked the box for the designer you're using - in the example below, it's Altium:
Lastly, click "Export to Selected Tools" which will create a library file for the selected tool and launch a .txt file with instructions on how to import the footprint into the selected designer.
Christopher Stemple
Product Marketing - Precision Amplifiers
