If you truly want (custom thermal pad, exact dimensions, named pins matching datasheet):
LM2596 library for Proteus is a specialized component package that allows engineers and hobbyists to simulate one of the most popular step-down (buck) voltage regulators within the Proteus Design Suite lm2596 library for proteus extra quality
Once you have your .IDX , .LIB , and .HEX (or .MLB ) files, follow this rigorous installation path. If you truly want (custom thermal pad, exact