PSpice Simulation of CE8301
Unless you care about the specific function of this particles regulator, you would model this as a 5v voltage source.  When you build the schematic, you would read the data sheet, follow the directions and recommndations, and expect to reach the speed functionality.

You model because there are question you'd like to ask the model -  not because it's there or because you can.  Unless the circuit you're trying to simulate depends on the nuances of the regulator, there is no reason to include the regulator in your simulation.