Power-on detector and method thereof
US7868668B2 · kind B2 · utility
2Cited by
3References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 2009 |
| Grant date | Jan 11, 2011 |
| Priority date | — |
| Expiry date | May 13, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03K5/19
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power-on detector and a method thereof are provided. The power-on detector includes four transistors, two resistors, and a comparator. The power-on detector can detect an input voltage and then determine whether the power is turned on or not. The power-on determination is substantially immune to temperature variation. The power-on detector is noise-free and stable in various temperatures.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.