JPH01255017A - Series regulator with power hold function - Google Patents

Series regulator with power hold function

Info

Publication number
JPH01255017A
JPH01255017A JP8219388A JP8219388A JPH01255017A JP H01255017 A JPH01255017 A JP H01255017A JP 8219388 A JP8219388 A JP 8219388A JP 8219388 A JP8219388 A JP 8219388A JP H01255017 A JPH01255017 A JP H01255017A
Authority
JP
Japan
Prior art keywords
terminal
current
voltage
output voltage
circuit
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.)
Granted
Application number
JP8219388A
Other languages
Japanese (ja)
Other versions
JP2594100B2 (en
Inventor
Hidenori Ishii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial Co Ltd
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
Application filed by Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP63082193A priority Critical patent/JP2594100B2/en
Publication of JPH01255017A publication Critical patent/JPH01255017A/en
Application granted granted Critical
Publication of JP2594100B2 publication Critical patent/JP2594100B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Abstract

PURPOSE: To control an output voltage based on the combination of the electrical states of both a start-up terminal and a power hold (PH) terminal by connecting a PH circuit to the start-up terminal, and holding the output voltage in spite of the electrical state of the start-up terminal while a current is taken out from the PH terminal.
CONSTITUTION: When a regulated voltage is applied on an input voltage terminal 1 and the current over a prescribed value required for the start-up of a regulator from the start-up terminal 4, the current is supplied to a band gap type constant voltage circuit consisting of resistors (R4WR7), a diode D5, and transistors (TR) (Q6WQ8), then, the circuit is operated. A comparator detects the fluctuation of the output voltage, and drives a TRQ17 so as to keep the voltage of a Darlington-connected TR constant. The output voltage of the regulator can be held by continuing to take out the current. The regulator, when being driven once, supplies the current to the band gap type constant voltage circuit in spite of whether or not the current is taken out from the PH terminal 5, and operates the circuit, then, the output voltage of the regulator can be held.
COPYRIGHT: (C)1989,JPO&Japio
JP63082193A 1988-04-05 1988-04-05 Series regulator with power hold function Expired - Fee Related JP2594100B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP63082193A JP2594100B2 (en) 1988-04-05 1988-04-05 Series regulator with power hold function

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP63082193A JP2594100B2 (en) 1988-04-05 1988-04-05 Series regulator with power hold function

Publications (2)

Publication Number Publication Date
JPH01255017A true JPH01255017A (en) 1989-10-11
JP2594100B2 JP2594100B2 (en) 1997-03-26

Family

ID=13767596

Family Applications (1)

Application Number Title Priority Date Filing Date
JP63082193A Expired - Fee Related JP2594100B2 (en) 1988-04-05 1988-04-05 Series regulator with power hold function

Country Status (1)

Country Link
JP (1) JP2594100B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04112307A (en) * 1990-09-03 1992-04-14 Nec Ic Microcomput Syst Ltd Power circuit

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6195422A (en) * 1984-10-17 1986-05-14 Matsushita Electric Ind Co Ltd Power supply device
JPS61267808A (en) * 1985-04-15 1986-11-27 Makoto Aso Stabilized power supply device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6195422A (en) * 1984-10-17 1986-05-14 Matsushita Electric Ind Co Ltd Power supply device
JPS61267808A (en) * 1985-04-15 1986-11-27 Makoto Aso Stabilized power supply device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04112307A (en) * 1990-09-03 1992-04-14 Nec Ic Microcomput Syst Ltd Power circuit

Also Published As

Publication number Publication date
JP2594100B2 (en) 1997-03-26

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