JP2002268760A5 - - Google Patents
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- JP2002268760A5 JP2002268760A5 JP2001070514A JP2001070514A JP2002268760A5 JP 2002268760 A5 JP2002268760 A5 JP 2002268760A5 JP 2001070514 A JP2001070514 A JP 2001070514A JP 2001070514 A JP2001070514 A JP 2001070514A JP 2002268760 A5 JP2002268760 A5 JP 2002268760A5
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- constant current
- constant
- constant voltage
- differential
- 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.)
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Description
【特許請求の範囲】
【請求項１】 低消費電力モードと動作モードとを有する機能ICに電力供給する定電圧回路であって、
差動回路と、
前記差動回路の出力を受けて定電圧を出力する増幅回路と、
前記差動回路の駆動電流を供給する定電流回路と、を有しており、
前記定電流回路は、互いに並列に接続された第１、第２の定電流回路とからなり、第２定電流回路には、モード制御信号に応じて第２定電流回路をオン、オフするスイッチング手段を設けたことを特徴とする定電圧回路。
[Claims]
1. A constant voltage circuit for supplying power to a functional IC having a low power consumption mode and an operation mode.
With a differential circuit
An amplifier circuit that receives the output of the differential circuit and outputs a constant voltage,
It has a constant current circuit that supplies the drive current of the differential circuit, and
The constant current circuit includes first and second constant current circuits connected in parallel to each other, and the second constant current circuit is switched on and off according to a mode control signal. A constant voltage circuit characterized by providing means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001070514A JP3789763B2 (en) | 2001-03-13 | 2001-03-13 | Constant voltage circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001070514A JP3789763B2 (en) | 2001-03-13 | 2001-03-13 | Constant voltage circuit |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2006020633A Division JP2006120185A (en) | 2006-01-30 | 2006-01-30 | Constant voltage circuit |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2002268760A JP2002268760A (en) | 2002-09-20 |
| JP2002268760A5 true JP2002268760A5 (en) | 2006-04-27 |
| JP3789763B2 JP3789763B2 (en) | 2006-06-28 |
Family
ID=18928380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001070514A Expired - Fee Related JP3789763B2 (en) | 2001-03-13 | 2001-03-13 | Constant voltage circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3789763B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4724486B2 (en) * | 2005-07-29 | 2011-07-13 | Ｏｋｉセミコンダクタ株式会社 | Driving power circuit |
| JP5527056B2 (en) | 2010-07-05 | 2014-06-18 | ミツミ電機株式会社 | Differential amplifier circuit and series regulator |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03158912A (en) * | 1989-11-17 | 1991-07-08 | Seiko Instr Inc | Voltage regulator |
| JP3286869B2 (en) * | 1993-02-15 | 2002-05-27 | 三菱電機株式会社 | Internal power supply potential generation circuit |
| JP4322360B2 (en) * | 1999-07-21 | 2009-08-26 | エルピーダメモリ株式会社 | Voltage stabilization circuit and semiconductor device using the same |
| JP2001075663A (en) * | 1999-09-03 | 2001-03-23 | Seiko Instruments Inc | Improvement of transient response characteristics of low-current-consumption linear regulator |
-
2001
- 2001-03-13 JP JP2001070514A patent/JP3789763B2/en not_active Expired - Fee Related
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