> Can I still use CDC without the VBUS pin?
Yes. You are not required to connect VBUS to use USB.
The USB standard does require that you check VBUS before energizing the data lines, but you can typically safely ignore that. If your device is USB powered, there is no need to check.
Schematic looks good.
If you feel a post has answered your question, please click "Accept as Solution".
.png){kind=link}