A superior library for Proteus should include more than just a schematic symbol. High-quality packs typically provide:
Pre-configured components for the 3.3V, 5V, 12V, and Adjustable (ADJ) versions. Where to Download the LM2596 Library lm2596 library for proteus extra quality
Several reputable online communities provide these "extra quality" files: GitHubhttps://github.com A superior library for Proteus should include more
Proteus Libraries for missing components in database - GitHub lm2596 library for proteus extra quality