INTEGRATED CIRCUIT HAVING LOW POWER MODE VOLTAGE REGULATOR
First Claim
1. A voltage regulator, comprising:
- a node;
circuitry coupled to the node for providing a current to the node;
a regulating transistor coupled between the node and a first power supply voltage terminal;
a disabling transistor coupled in parallel with the regulating transistor for selectively disabling the regulating transistor by directly connecting the first power supply voltage terminal to the node; and
a voltage follower stage coupled between the first power supply voltage terminal and a second power supply voltage terminal, the voltage follower stage having an output connected to a control electrode of the regulating transistor, and an input connected to the node.
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Accused Products
Abstract
A voltage regulator includes a node, circuitry, a regulating transistor, a disabling transistor, and a voltage follower stage. The circuitry is coupled to the node for providing a current to the node. The regulating transistor is coupled between the node and a first power supply voltage terminal. The disabling transistor is coupled in parallel with the regulating transistor for selectively disabling the regulating transistor by directly connecting the first power supply voltage terminal to the node. The voltage follower stage is coupled between the first power supply voltage terminal and a second power supply voltage terminal. The voltage follower stage has an output connected to a control electrode of the regulating transistor, and an input connected to the node.
89 Citations
20 Claims
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1. A voltage regulator, comprising:
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a node; circuitry coupled to the node for providing a current to the node; a regulating transistor coupled between the node and a first power supply voltage terminal; a disabling transistor coupled in parallel with the regulating transistor for selectively disabling the regulating transistor by directly connecting the first power supply voltage terminal to the node; and a voltage follower stage coupled between the first power supply voltage terminal and a second power supply voltage terminal, the voltage follower stage having an output connected to a control electrode of the regulating transistor, and an input connected to the node. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A voltage regulator comprising:
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a node; circuitry coupled to the node for providing a current to the node; a regulating transistor coupled between the node and a first power supply voltage terminal; a disabling transistor coupled in parallel with the regulating transistor for selectively disabling the regulating transistor by directly connecting the first power supply voltage terminal to the node; and a voltage follower stage comprising; an N-channel transistor having a first current electrode connected to the second power supply voltage terminal, a control electrode connected to the node, and a second current electrode connected to a control electrode of the regulating transistor; and a P-channel transistor having a first current electrode connected to both a control electrode of the regulating transistor and to the second current electrode of the N-channel transistor, a control electrode connected to the node, and a second current electrode connected to the first power supply voltage terminal. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A voltage regulator comprising:
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a node; circuitry coupled to the node for providing a current to the node; a regulating transistor coupled between the node and a first power supply voltage terminal; a disabling transistor coupled in parallel with the regulating transistor for selectively disabling the regulating transistor by directly connecting the first power supply voltage terminal to the node; and a voltage follower stage comprising a load element and a voltage follower transistor connected together in series between the first power supply voltage terminal and the second power supply voltage terminal, wherein a control electrode of the voltage follower transistor is connected to the node, and a current electrode of the voltage follower transistor is connected to a control electrode of the regulating transistor. - View Dependent Claims (17, 18, 19, 20)
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Specification