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Half power supply voltage generator and semiconductor memory device using the same

  • US 20030137883A1
  • Filed: 01/21/2003
  • Published: 07/24/2003
  • Est. Priority Date: 01/21/2002
  • Status: Active Grant
First Claim
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1. 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.

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