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參數(shù)資料
| 型號(hào)： | FOD2741CSR2V |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 光電耦合器 |
| 英文描述： | 1 CHANNEL TRANSISTOR OUTPUT OPTOCOUPLER |
| 封裝： | SURFACE MOUNT, DIP-8 |
| 文件頁數(shù)： | 1/14頁 |
| 文件大?。?/td> | 170K |
| 代理商： | FOD2741CSR2V |
10/29/02
OPTICALLY ISOLATED
ERROR AMPLIFIER
Page 1 of 14
FOD2741A
FOD2741B
FOD2741C
2002 Fairchild Semiconductor Corporation
DESCRIPTION
The FOD2741 Optically Isolated Amplier 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 100% to 200%. It also has an outstanding
temperature coefcient of 50 ppm/°C. It is primarily intended for use as the error amplier/
reference voltage/optocoupler function in isolated ac to dc power supplies and dc/dc con-
verters.
When using the FOD2741, 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 amplier in single package
2.5V reference
CTR 100% to 200%
5,000V RMS isolation
UL approved E90700, Volume 2
CSA approval 1296837
VDE approval 40002463
BSI approval 8702, 8703
Low temperature coefcient 50 ppm/°C max
FOD2741A: tolerance 0.5%
FOD2741B: tolerance 1%
FOD2741C: tolerance 2%
APPLICATIONS
Power supplies regulation
DC to DC converters
* The compensation network must be attached between pins 6 and 7.
PIN DEFINITIONS
Pin Number
Pin Name
Pin function description
1
NC
Not connected
2
C
Phototransistor Collector
3
E
Phototransistor Emitter
4
NC
Not connected
5
GND
Ground
6
COMP
Error Amplier Compensation. This pin is the output of the error amplier. *
7
FB
Voltage Feedback. This pin is the inverting input to the error amplier
8
LED
Anode LED. This pin is the input to the light emitting diode.
8
1
8
1
FUNCTIONAL BLOCK DIAGRAM
1
2
3
4
5
6
7
8 LED
FB
COMP
GND
NC
C
E
NC
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| FOD2741CSV | 功能描述:光隔離放大器 Error amplifier Optocoupler 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FOD2741CSV_Q | 功能描述:光隔離放大器 Error amplifier Optocoupler 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FOD2741CT | 功能描述:光隔離放大器 Error amplifier Optocoupler 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FOD2741CT_Q | 功能描述:光隔離放大器 Error amplifier Optocoupler 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| FOD2741CTV | 功能描述:光隔離放大器 Error amplifier Optocoupler 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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