Two-stage error amplifier with nested-compensation for LDO with sink and source ability
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United States of America Patent
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Jul 28, 2020
Grant Date -
Jan 11, 2018
app pub date -
Aug 17, 2017
filing date -
Dec 29, 2014
priority date (Note) -
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Abstract
A low dropout amplifier may include an error amplifier having first and second inputs coupled to a reference signal and a feedback signal, respectively. The error amplifier may be configured to generate first and second error signals at first and second outputs, respectively, with the first and second error signals based upon a difference between the reference signal and the feedback signal. A sink stage may be coupled to the first output and configured to generate a sink current based upon the first error signal. A source stage may be coupled to the second output and configured to generate a source current based upon the second error signal. An output node may be coupled to receive the sink and source currents.
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