The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 06, 1999
Filed:
Nov. 17, 1997
Yoichi Tobita, Hyogo, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
An internal power supply circuit includes a first output MOS transistor for transmitting a first reference voltage in a source follower mode, an internal reference voltage generating circuit for generating a second reference voltage from the output voltage of the first MOS transistor, and an output MOS transistor coupled between a power supply node and an output node and operating in the source follower mode in accordance with the second internal reference voltage. Internal reference voltage generating circuit has a function of canceling an influence of the threshold voltages of output MOS transistor and the first MOS transistor on the internal voltage VINT on the output node. Since comparing circuit for comparing the internal voltage and the reference voltage is not used, current consumption necessary for the comparing operation can be reduced.