Proteus comes pre-loaded with hundreds of components, from basic resistors and op-amps to complex microcontrollers like the PIC and Arduino. However, the default POWER or ANALOG libraries often miss modern, high-current switching regulators.
: This is one of the most popular sources for Proteus-specific models. It typically includes the fixed (3.3V, 5V, 12V) and adjustable (ADJ) versions . Simulation Performance : lm2596 library for proteus