Electronic circuit with protection against supply voltage overload

摘要

A semiconductor electronic circuit with a protection device against supply voltage overloading, being of the type which comprises a first power circuit portion connected to a power supply line and enabled through at least a first transistor. This transistor has a control terminal driven by a voltage sensor connected to the power supply line. The semiconductor electronic circuit is characterized, moreover, in that it comprises a second signal circuit portion connected to the power supply line in a structurally independent manner of the first power circuit portion and through a controlled switch.