Do you use publish command to plot several AutoCAD layouts to PDF/DWF format? The default setting will allow you to get single file, with multiple pages.
What if you want to get multiple files, with one sheet in each PDF/DWF file?
You can change it in publish dialog. Click publish option.
In publish option dialog, change type in general DWF/PDF options to single-sheet file.
In this example, I have 4 sheets to plot. I will get 4 PDFs instead of one PDF with 4 pages in it.