Patent ID: 6943592

Claim:
A detector of the level of supply voltage of an integrated circuit, comprising: a comparator having a first input receiving a first reference voltage and a second input receiving a second reference voltage, the two reference voltages varying differently as a function of a supply voltage to form curves of variation which intersect at a value of supply voltage which is located close to a desired threshold, the comparator further having an output which switches from a first state to a second state when the supply voltage crosses the threshold; a resistive divider bridge supplied with the supply voltage, having an intermediate connector of which constitutes the first reference voltage; and a resistor series-connected with a native P type MOS transistor, supplied with the supply voltage, a point of junction of the resistor and the transistor constituting the second reference voltage; wherein a non-linear element with relatively low conduction threshold voltage is parallel-connected to a resistor of the divider bridge.