Low dropout voltage regulator and electronic device thereof
US8836302B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 15, 2012 |
| Grant date | Sep 16, 2014 |
| Priority date | — |
| Expiry date | Mar 23, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05F1/56
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A low dropout voltage regulator is provided. The low dropout voltage regulator includes a comparison unit, a buck unit, a feedback unit and a current-drawing unit. The comparison unit is used for receiving a reference voltage and a feedback voltage, and comparing the reference voltage and the feedback voltage to output a first voltage. The buck unit is used for receiving an input voltage and the first voltage and transferring the input voltage to a output voltage. The feedback unit is used for receiving the output voltage, and converting the output voltage to a feedback voltage, and then transmitting the feedback voltage to the comparison unit. The current-drawing unit determines whether to draw a portion of a first current generated by the buck unit, so as to stabilize the output voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.