Semiconductor device allowing generation of desired internal voltage at high accuracy
US6069518A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1994 |
| Grant date | May 30, 2000 |
| Priority date | — |
| Expiry date | Dec 1, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11C16/30
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
In response to complementary clock signals provided from a driver, a charge pump operates to provide an output voltage which is a down-converted negative voltage. The voltage between this output voltage and a predetermined positive reference voltage is capacitance-divided by capacitors. The capacitance-divided positive voltage is applied to a comparator, whereby a reference voltage is compared with the above positive voltage. An output signal of the comparator is applied to the driver. In response, the driver controls the operation of the charge pump, whereby the output voltage is clamped at a predetermined voltage level for output.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.