Power AC-DC in IC MCP39F501. (LluciferT)

Hi all. Im read datasheet and guide: MCP39F501 Power Monitor Demonstration Board User's Guide. And look something Power AC-DC in IC MCP39F501. - Everybody can show me calculator I_load with some element : R,C,f.... ex: R34=33R,C21=1.5uF and f=50Hz - R34..