Invention Grant
- Patent Title: Quiescent current limitation for a low-dropout regulator in dropout condition
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Application No.: US14864987Application Date: 2015-09-25
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Publication No.: US10310526B2Publication Date: 2019-06-04
- Inventor: Slawomir Malinowski , Robert Goslawski
- Applicant: Dialog Semiconductor (UK) Limited
- Applicant Address: GB London
- Assignee: Dialog Semiconductor (UK) Limited
- Current Assignee: Dialog Semiconductor (UK) Limited
- Current Assignee Address: GB London
- Agency: Salie Ackerman LLC
- Agent Stephen B. Ackerman
- Priority: DE102015205359 20150324
- Main IPC: G05F1/575
- IPC: G05F1/575 ; G05F1/565 ; G05F1/573

Abstract:
An low dropout regulator and method that has reduced quiescent current consumption is presented. The voltage regulator circuit comprises an output terminal, a first circuit branch connected between an input voltage level and the output terminal, a second circuit branch connected between the input voltage level and a predetermined voltage level, a first current mirror for mirroring a current flowing in the second circuit branch to the first circuit branch, a first feedback circuit to regulate the output voltage, and a second feedback circuit for controlling the second switching element. The second feedback circuit comprises a current sensing means for sensing a current that depends on a current flowing in the first circuit branch and to control the second switching element such that the current flowing through the second circuit branch is limited to a current that depends on the current sensed by the current sensing means.
Public/Granted literature
- US20160282890A1 Quiescent Current Limitation for a Low-Dropout Regulator in Dropout Condition Public/Granted day:2016-09-29
Information query
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