Low quiescent current low-dropout regulator (LDO)
US11003201B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 26, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Jan 10, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/3827
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A low-dropout (LDO) regulator and an associated method and apparatus are described. The LDO regulator generally includes a first transistor coupled between an input voltage node and an output voltage node of the LDO regulator. The LDO regulator further includes a first amplifier having an output coupled to a gate of the first transistor, wherein a feedback path couples the output voltage node to an input of the first amplifier. The LDO regulator further includes a second amplifier having an output coupled to an enable input of the first amplifier, wherein a voltage-sensing path couples the input voltage node to an input of the second amplifier. The LDO regulator further includes and a second transistor coupled between the gate of the first transistor and a reference potential node, the output of the second amplifier being coupled to a gate of the second transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.