Patent ID: 6781891
Filing Date: 2004-08-24
Classification: G05F,G11C,H01L

Abstract:
A power supply voltage generating circuit for generating an output voltage, comprising:first active resistor means connected between a supply voltage and a first node, the first active resistor means having a resistance that varies responsive to the output voltage; first passive resistor means connected in parallel to the first active resistor means; first voltage regulating means connected between the first node and a second node adapted to regulate a voltage at the first node responsive to a voltage at the second node; second voltage regulating means connected between the second node and a third node adapted to regulate the voltage at the second node responsive to a voltage at the third node; second active resistor means connected between the third node and a ground voltage terminal, the second active resistor means having a resistance that varies responsive to the output voltage; second passive resistor means connected in parallel with the second active resistor means; a pull-up transistor connected between the supply voltage and the output voltage and adapted to pull up the output voltage responsive to the voltage at the first node; and a pull-down transistor connected between the ground voltage and the output voltage and adapted to pull down the output voltage responsive to the voltage at the third node.