Patent ID: 6465997
Filing Date: 2002-10-15
Classification: G05F,Y10S

Abstract:
A regulated voltage generator for supplying at least one regulated voltage to an integrated circuit, the regulated voltage generator comprising:a bandgap reference voltage circuit comprising a load resistor, a bipolar transistor configured as a diode and including an emitter connected to said load resistor, and a current generator comprising an output transistor for supplying a current to said bipolar transistor via said load resistor; and at least one gain stage connected to an output of said bandgap reference voltage circuit for supplying the at least one regulated voltage, said at least one gain stage comprising a first MOS transistor including a gate connected to a gate of said output transistor, and a second MOS transistor connected in series to said first MOS transistor between a supply voltage and a voltage reference, said second MOS transistor including a gate connected to the output of said bandgap reference voltage circuit, characteristics of said first and second transistors determining the at least one regulated voltage, said load resistor having a value so that an emitter-base voltage of said bipolar transistor varies with temperature to compensate for a variation of a gate-source voltage of said second transistor as a function of temperature.