Capacitor-Less Low Drop-Out (LDO) Regulator
First Claim
1. A capacitor-less low drop out (LDO) regulator, comprising:
- an error amplifier configured to receive a bandgap reference input;
first and second pass transistors configured to receive outputs from the error amplifier;
first and second resistor feedback networks, the first resistor network configured to provide a feedback output as an input to the error amplifier;
an overshoot protection circuit; and
an output connected to the pass transistors;
wherein the capacitor-less low dropout (LDO) regulator is operable without an output capacitor.
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Accused Products
Abstract
An integrated circuit including a low drop out (LDO) regulator configured to implement transient response and loop stability in a capacitor-less configuration, including an error amplifier configured to receive a bandgap reference input; first and second pass elements configured to receive outputs from the error amplifier; first and second resistor feedback networks, the first resistor network configured to provide a feedback output as an input to the error amplifier; an overshoot protection circuit; and an output connected to the pass transistors; wherein the capacitor-less low dropout (LDO) regulator is operable without an output capacitor.
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Citations
21 Claims
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1. A capacitor-less low drop out (LDO) regulator, comprising:
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an error amplifier configured to receive a bandgap reference input; first and second pass transistors configured to receive outputs from the error amplifier; first and second resistor feedback networks, the first resistor network configured to provide a feedback output as an input to the error amplifier; an overshoot protection circuit; and an output connected to the pass transistors; wherein the capacitor-less low dropout (LDO) regulator is operable without an output capacitor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An integrated circuit including a low drop out (LDO) regulator configured to implement transient response and loop stability in a capacitor-less configuration, comprising:
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an error amplifier configured to receive a bandgap reference input; first and second pass elements configured to receive outputs from the error amplifier; first and second resistor feedback networks, the first resistor network configured to provide a feedback output as an input to the error amplifier; an overshoot protection circuit; and an output connected to the first and second pass elements; wherein the integrated circuit is operable to implement the low dropout regulator without an output capacitor. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for providing a low drop out (LDO) regulator configured to implement transient response and loop stability in a capacitor-less configuration, comprising:
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providing an error amplifier configured to receive a bandgap reference input; providing first and second pass elements configured to receive outputs from the error amplifier; providing first and second resistor feedback networks, the first resistor network configured to provide a feedback output as an input to the error amplifier; providing an overshoot protection circuit; and providing an output connected to the pass transistors; wherein the capacitor-less low dropout (LDO) regulator is operable without an output capacitor. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification