Regulator amplifier circuit for outputting a fixed output voltage independent of a load current
US10355648B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Mar 2, 2018 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Mar 2, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45631
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A regulator amplifier circuit of an embodiment includes a differential amplifier circuit, an nMOS transistor, and a pMOS transistor. The differential amplifier circuit includes a differential circuit and a transistor. The differential circuit includes a differential MOS transistor circuit, and the transistor includes a gate voltage controlled by the differential circuit. The nMOS transistor includes a drain connected to a drain on minus side of the differential MOS transistor, and a gate connected to a source of the transistor. The nMOS transistor operates in a weak inversion region. The pMOS transistor includes a source connected to a source of the nMOS transistor, and a drain connected to a voltage lower than a source voltage of the nMOS transistor. The pMOS transistor operates in the weak inversion region.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.