Programmable low dropout linear regulator
US8648582B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2010 |
| Grant date | Feb 11, 2014 |
| Priority date | — |
| Expiry date | Nov 4, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/575
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
The present invention provides a programmable low dropout linear regulator using a reference voltage to convert an input voltage into a regulated voltage according to a control signal. The programmable low dropout linear regulator includes an operational amplifier having a negative input coupled to receive the reference voltage, a first transistor having a gate coupled to an output terminal of the operational amplifier and a first source/drain coupled to an output terminal of the regulated voltage, a first impedance coupled between a positive input of the operational amplifier and the output terminal of the regulated voltage, and a second impedance coupled between the positive input of the operational amplifier and a ground. The second impedance includes a second transistor having a gate coupled to receive the control signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.