JPH0212509A - Constant voltage circuit - Google Patents

Constant voltage circuit

Info

Publication number
JPH0212509A
JPH0212509A JP16421588A JP16421588A JPH0212509A JP H0212509 A JPH0212509 A JP H0212509A JP 16421588 A JP16421588 A JP 16421588A JP 16421588 A JP16421588 A JP 16421588A JP H0212509 A JPH0212509 A JP H0212509A
Authority
JP
Grant status
Application
Patent type
Prior art keywords
constant voltage
resistor
voltage circuit
voltage
diode
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16421588A
Inventor
Mitsutoshi Sugawara
Original Assignee
Nec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date

Links

Abstract

PURPOSE: To generate a constant voltage with a temperature coefficient zero by forming a band gap type constant voltage circuit in the inside of a MOS type IC.
CONSTITUTION: P-channel MOS transistors (1-3) whose sources are connected to a power source 12 constitute a current mirror setting the transistor 2 as a supply side. And the current density of first and second diodes 6 and 7 are set differently from each other and the difference ΔV of the voltage in a forward direction is generated between both ends of a first resistor 9, and the voltage is amplified by a second resistor 10 and the first resistor 9 by using the MOS transistors (1-3), thereby, the constant voltage circuit can be generated setting the sum of the voltage in the forward direction of the second resistor 10 and a third diode 8 as output. In such a way, it is possible to obtain the constant voltage circuit not depending on a temperature only by the MOS transistor and the diode.
COPYRIGHT: (C)1990,JPO&Japio
JP16421588A 1988-06-30 1988-06-30 Constant voltage circuit Pending JPH0212509A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16421588A JPH0212509A (en) 1988-06-30 1988-06-30 Constant voltage circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16421588A JPH0212509A (en) 1988-06-30 1988-06-30 Constant voltage circuit

Publications (1)

Publication Number Publication Date
JPH0212509A true true JPH0212509A (en) 1990-01-17

Family

ID=15788855

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16421588A Pending JPH0212509A (en) 1988-06-30 1988-06-30 Constant voltage circuit

Country Status (1)

Country Link
JP (1) JPH0212509A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6204724B1 (en) 1998-03-25 2001-03-20 Nec Corporation Reference voltage generation circuit providing a stable output voltage
US6870421B2 (en) 2002-03-15 2005-03-22 Seiko Epson Corporation Temperature characteristic compensation apparatus
JP2009199482A (en) * 2008-02-25 2009-09-03 Seiko Epson Corp Band-gap reference circuit
US8100369B2 (en) 2008-01-21 2012-01-24 Erico International Corporation I-beam seismic sway brace clamp

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62212713A (en) * 1986-03-14 1987-09-18 Hitachi Ltd Mis voltage stabilizing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62212713A (en) * 1986-03-14 1987-09-18 Hitachi Ltd Mis voltage stabilizing device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6204724B1 (en) 1998-03-25 2001-03-20 Nec Corporation Reference voltage generation circuit providing a stable output voltage
US6870421B2 (en) 2002-03-15 2005-03-22 Seiko Epson Corporation Temperature characteristic compensation apparatus
US8100369B2 (en) 2008-01-21 2012-01-24 Erico International Corporation I-beam seismic sway brace clamp
JP2009199482A (en) * 2008-02-25 2009-09-03 Seiko Epson Corp Band-gap reference circuit

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