JP2010279098A5 - - Google Patents
Download PDFInfo
- Publication number
- JP2010279098A5 JP2010279098A5 JP2009126655A JP2009126655A JP2010279098A5 JP 2010279098 A5 JP2010279098 A5 JP 2010279098A5 JP 2009126655 A JP2009126655 A JP 2009126655A JP 2009126655 A JP2009126655 A JP 2009126655A JP 2010279098 A5 JP2010279098 A5 JP 2010279098A5
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- current flowing
- control signal
- amplifier
- current
- 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
Links
Claims (1)
前記第１のトランジスタに流れる電流に応じた電流が流れる第２のトランジスタと、
前記第２のトランジスタに流れる電流に基づいて決定される比較電圧と、所定の基準電圧と、に基づいて前記第１及び前記第２のトランジスタに流れる電流を制御するための第１の制御信号を出力する第１のアンプと、
前記第１のトランジスタの第１の端子の電位と、前記第２のトランジスタの第１の端子の電位と、を等しくするように第２の制御信号を出力する第２のアンプと、
前記第２のトランジスタに直列に接続され、前記第２の制御信号に基づいて前記第２のトランジスタに流れる電流を制御する第３のトランジスタと、を備えた電流制御回路であって、
前記第１のアンプは、
前記第１及び前記第２のトランジスタが飽和領域で動作するように前記第１の制御信号を出力する電流制御回路。 A first transistor that controls the current flowing through the load;
A second transistor in which a current corresponding to a current flowing in the first transistor flows;
A first control signal for controlling a current flowing in the first and second transistors based on a comparison voltage determined based on a current flowing in the second transistor and a predetermined reference voltage; A first amplifier to output;
A second amplifier that outputs a second control signal so that the potential of the first terminal of the first transistor is equal to the potential of the first terminal of the second transistor;
A third transistor connected in series to the second transistor and controlling a current flowing in the second transistor based on the second control signal;
The first amplifier is
A current control circuit for outputting the first control signal so that the first and second transistors operate in a saturation region;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009126655A JP2010279098A (en) | 2009-05-26 | 2009-05-26 | Current control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009126655A JP2010279098A (en) | 2009-05-26 | 2009-05-26 | Current control circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2010279098A JP2010279098A (en) | 2010-12-09 |
| JP2010279098A5 true JP2010279098A5 (en) | 2012-04-05 |
Family
ID=43425543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2009126655A Pending JP2010279098A (en) | 2009-05-26 | 2009-05-26 | Current control circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2010279098A (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0949858A (en) * | 1995-08-07 | 1997-02-18 | Nippon Motorola Ltd | Current detection and control circuit and pattern layout method |
| JP4699856B2 (en) * | 2005-10-05 | 2011-06-15 | 旭化成エレクトロニクス株式会社 | Current generation circuit and voltage generation circuit |
| JP5168910B2 (en) * | 2007-01-18 | 2013-03-27 | 株式会社リコー | Light-emitting diode driving device using constant current circuit and constant current circuit |
-
2009
- 2009-05-26 JP JP2009126655A patent/JP2010279098A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP2010223796A5 (en) | ||
| JP2012208868A5 (en) | ||
| JP2009192507A5 (en) | ||
| JP2011003767A5 (en) | Semiconductor device | |
| JP2012203673A5 (en) | ||
| JP2014142923A5 (en) | ||
| JP2012120168A5 (en) | Offset removal circuit | |
| TW200625801A (en) | Power supply driver circuit | |
| JP2011152023A5 (en) | ||
| JP2010256968A5 (en) | ||
| TW200726050A (en) | DC-DC converter and control circuit for DC-DC converter | |
| JP2010166108A5 (en) | ||
| JP2012070364A5 (en) | ||
| JP2009152680A5 (en) | ||
| JP2018530298A5 (en) | ||
| JP2017505898A5 (en) | ||
| JP2013527930A5 (en) | ||
| JP2011086363A5 (en) | ||
| WO2014138693A3 (en) | Low threshold voltage comparator | |
| JP2007207411A5 (en) | ||
| JP2010193034A5 (en) | ||
| JP2012238233A5 (en) | ||
| JP2017050984A5 (en) | ||
| JP2011008514A5 (en) | ||
| JP2010004026A5 (en) |