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:
Jan. 11, 2011
Filed:
Jan. 19, 2007
Osamu Uehara, Chiba, JP;
Osamu Uehara, Chiba, JP;
Seiko Instruments Inc., Chiba-shi, Chiba, JP;
Abstract
Provided is a band gap constant-voltage circuit which is configured by combining a PMOS transistor, an NMOS transistor, a bipolar transistor, and a resistor, and is capable of preventing an output voltage from being stabilized at 0 V immediately after power supply fluctuation. According to the band gap constant-voltage circuit of the present invention, the back-gates of two p-type transistors (Pand P) constituting a differential amplifier are each connected to a node () which is a power source terminal on the positive side of the differential amplifier, and a level shifter circuit is connected to the gate of each of the transistors (Pand P).