The big event that is big of limiting circuitry should be to avoid injury to the IC when an overload is positioned concerning the manufacturing from the regulator (the stress impedance is just too low). The regulator would provide load that is exorbitant and destroy the pass transistor within the component without present restricting. The restriction that is present will bypass the voltage control cycle, and reduce the drive to your pass transistor therefore the optimum safe level that occursn't surpassed to prevent this event. There are two main fundamental kinds of current restricting circuits mostly present in linear regulators.

1) Constant Current Limiting

2) Voltage-Dependent Current Limiting (sometimes called "Foldback Limiting")