FOLDBACK SHUTDOWN FOR VOLTAGE REGULATORS
Original Publication Date: 1997-Jun-01
Included in the Prior Art Database: 2002-May-22
The circuit described below and illustrated in the accompanying schematic (Figure 1) provides very effective foldback shutdown protection against accidental short circuits on the output of a voltage regulator or other circuit. It is described for the example of a voltage regulator. Foldback shutdown means that a short circuit on the output causes the output current to drop to a level below the satura- tion level of the regulator, i.e., it automatically turns itself off.