In this example, the LM2596 is used as a buck converter to convert a 12V input voltage to a 5V output voltage.
Even with a third-party library, be aware of these limitations in Proteus: lm2596 proteus library
Once you have downloaded the ZIP file containing the LM2596 library: In this example, the LM2596 is used as
Ensure any downloaded library is scanned for malware. Prefer community-vetted repositories. In this example
Once the library is correctly installed: