Over-current protection in linear regulators
US7486936B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 7, 2005 |
| Grant date | Feb 3, 2009 |
| Priority date | — |
| Expiry date | Jan 3, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45732
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An integrated circuit radio transceiver and method therefor includes a linear regulator an output transistor for producing a current into an output node of the regulator wherein an amplification block is operable to produce a bias signal to a gate terminal of the output transistor to operably bias the output transistor to produce the current into the output node of the regulator. A current steering amplification block is operably disposed to steer current in/out of the gate of the output transistor (depending on device type) based upon the current being conducted through the output node of the regulator exceeding a specified threshold. The current steering amplification block further includes a current sinking element operably disposed to sink a specified amount of current to define the specified threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.