Lm2596 Library For Proteus -

Best for students/hobbyists: Download from The Engineering Projects (tested on Proteus 8.6–8.12).

Best for professional design: Use TI’s official PSpice model in LTspice or Cadence, then only use Proteus for microcontroller/system integration with a simplified LM2596 block. lm2596 library for proteus

Click on Pick Devices (P) and search for LM2596. You should now see the components listed. Best for students/hobbyists : Download from The Engineering

Sometimes. The LM2576 has a different switching frequency (52kHz vs 150kHz) and slightly different inductor requirements. If your library is a simple SPICE model of a buck controller, changing the frequency parameter might work. However, for accuracy, find a dedicated LM2576 library. Click on Pick Devices (P) and search for LM2596