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參數資料
| 型號： | FOD2743B |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電耦合器 |
| 英文描述： | OPTICALLY ISOLATED ERROR AMPLIFIER |
| 中文描述： | 1 CHANNEL TRANSISTOR OUTPUT OPTOCOUPLER |
| 封裝： | DIP-8 |
| 文件頁數： | 1/15頁 |
| 文件大小： | 619K |
| 代理商： | FOD2743B |
4/8/04
OPTICALLY ISOLATED
ERROR AMPLIFIER
Page 1 of 15
FOD2743A
FOD2743B
FOD2743C
2004 Fairchild Semiconductor Corporation
DESCRIPTION
The FOD2743 Optically Isolated Amplifier consists of the popular KA431 precision
programmable shunt reference and an optocoupler. The optocoupler is a gallium arsenide
(GaAs) light emitting diode optically coupled to a silicon phototransistor. It comes in 3
grades of reference voltage tolerance = 2%, 1%, and 0.5%.
The Current Transfer Ratio (CTR) ranges from 50% to 100%. It also has an outstanding
temperature coefficient of 50 ppm/°C. It is primarily intended for use as the error amplifier/
reference voltage/optocoupler function in isolated ac to dc power supplies and dc/dc con-
verters.
When using the FOD2743, power supply designers can reduce the component count and
save space in tightly packaged designs. The tight tolerance reference eliminates the need
for adjustments in many applications. The device comes in a 8-pin dip white package.
FEATURES
Optocoupler, precision reference and error amplifier in single package
2.5V reference
CTR 50% to 100% at 1mA
5,000V RMS isolation
UL approval E90700, Vol. 2
CSA approval 1296837
VDE approval pending
BSI approval pending
Low temperature coefficient 50 ppm/°C max
FOD2743A: tolerance 0.5%
FOD2743B: tolerance 1%
FOD2743C: tolerance 2%
APPLICATIONS
Power supplies regulation
DC to DC converters
* The compensation network must be attached between pins 2 and 4.
PIN DEFINITIONS
Pin Number
Pin Name
Pin function description
1
LED
Anode LED. This pin is the input to the light emitting diode.
2
COMP
Error Amplifier Compensation. This pin is the output of the error amplifier. *
3
GND
Ground
4
FB
Voltage Feedback. This pin is the inverting input to the error amplifier
5
NC
Not connected
6
E
Phototransistor Emitter
7
C
Phototransistor Collector
8
NC
Not connected
8
8
1
8
1
1
FUNCTIONAL BLOCK DIAGRAM
1
2
3
4
5
6
7
8 NC
C
E
NC
LED
COMP
GND
FB
相關PDF資料 |
PDF描述 |
|---|---|
| FOD2743C | OPTICALLY ISOLATED ERROR AMPLIFIER |
| FOD816 | 4-Pin Phototransistor Optocouplers |
| FOD816300 | 4-Pin Phototransistor Optocouplers |
| FOD816300W | 4-Pin Phototransistor Optocouplers |
| FOD8163S | 4-Pin Phototransistor Optocouplers |
相關代理商/技術參數 |
參數描述 |
|---|---|
| FOD2743BS | 功能描述:光隔離放大器 Error Amp Coupler Transistor Output RoHS:否 制造商:Avago Technologies 絕緣電壓:5000 Vrms 參考電壓: 電流傳遞比: 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FOD2743BSD | 功能描述:光隔離放大器 Error Amp Coupler Transistor Output RoHS:否 制造商:Avago Technologies 絕緣電壓:5000 Vrms 參考電壓: 電流傳遞比: 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FOD2743BSDV | 功能描述:光隔離放大器 Error Amp Coupler Transistor Output RoHS:否 制造商:Avago Technologies 絕緣電壓:5000 Vrms 參考電壓: 電流傳遞比: 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FOD2743BSV | 功能描述:光隔離放大器 Error Amp Coupler Transistor Output RoHS:否 制造商:Avago Technologies 絕緣電壓:5000 Vrms 參考電壓: 電流傳遞比: 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FOD2743BT | 功能描述:光隔離放大器 Error Amp Coupler Transistor Output RoHS:否 制造商:Avago Technologies 絕緣電壓:5000 Vrms 參考電壓: 電流傳遞比: 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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