Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
January 11, 2011
Patent Application Number
11655301
Date Filed
January 19, 2007
Patent Primary Examiner
Patent 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 (P112 and P 113) constituting a differential amplifier are each connected to a node (11) 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 (P112 and P113).
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