Invention Grant
- Patent Title: Low dropout regulator circuit and method for controlling a voltage of a low dropout regulator circuit
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Application No.: US15546656Application Date: 2016-01-21
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Publication No.: US10338618B2Publication Date: 2019-07-02
- Inventor: Martin Mayer , Thomas Jessenig
- Applicant: ams AG
- Applicant Address: AT Unterpremstaetten
- Assignee: ams AG
- Current Assignee: ams AG
- Current Assignee Address: AT Unterpremstaetten
- Agency: Fish & Richardson P.C.
- Priority: EP15152915 20150128
- International Application: PCT/EP2016/051239 WO 20160121
- International Announcement: WO2016/120150 WO 20160804
- Main IPC: G05F1/575
- IPC: G05F1/575

Abstract:
An LDO circuit comprises a pass element, and input stage, a current sink, a comparator and a control circuit. The pass element is configured to generate an output voltage depending on a gate signal and on an input voltage. The input stage is configured to generate a steering signal based on a deviation between a first reference signal and a feedback signal, the feedback signal being based on the output voltage. The current sink is controlled by a steering signal and connected between the gate control terminal and a reference terminal. The comparator is configured to compare the steering signal to a second reference signal and to generate a switch signal based on the comparison. The control circuit comprises a first current path and is configured to suspend, in particular temporarily suspend, the first current path depending on the switch signal.
Public/Granted literature
- US20180017984A1 LOW DROPOUT REGULATOR CIRCUIT AND METHOD FOR CONTROLLING A VOLTAGE OF A LOW DROPOUT REGULATOR CIRCUIT Public/Granted day:2018-01-18
Information query
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