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FOD2741B PDF预览

FOD2741B

更新时间: 2024-01-22 06:53:25
品牌 Logo 应用领域
飞兆/仙童 - FAIRCHILD 光电放大器输出元件
页数 文件大小 规格书
15页 189K
描述
OPTICALLY ISOLATED ERROR AMPLIFIER

FOD2741B 技术参数

是否Rohs认证: 符合生命周期:Obsolete
包装说明:DIP-8Reach Compliance Code:compliant
HTS代码:8541.40.80.00风险等级:5.77
Is Samacsys:N其他特性:UL APPROVED, VDE APPROVED
Coll-Emtr Bkdn Voltage-Min:70 V配置:SINGLE
标称电流传输比:100%最大暗电源:50 nA
最大正向电流:0.02 A最大绝缘电压:5000 V
JESD-609代码:e3元件数量:1
最高工作温度:85 °C最低工作温度:-25 °C
光电设备类型:TRANSISTOR OUTPUT OPTOCOUPLER端子面层:Matte Tin (Sn)
Base Number Matches:1

FOD2741B 数据手册

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OPTICALLY ISOLATED  
ERROR AMPLIFIER  
FOD2741A  
FOD2741B  
FOD2741C  
DESCRIPTION  
The FOD2741 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%.  
8
1
The Current Transfer Ratio (CTR) ranges from 100% to 200%. 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.  
8
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.  
8
1
1
FEATURES  
FUNCTIONAL BLOCK DIAGRAM  
Optocoupler, precision reference and error amplifier in single package  
2.5V reference  
CTR 100% to 200%  
5,000V RMS isolation  
NC  
LED  
1
8
UL approved E90700, Volume 2  
CSA approval 1296837  
C
E
FB  
2
3
4
7
6
5
VDE approval 40002463  
BSI approval 8702, 8703  
Low temperature coefficient 50 ppm/°C max  
COMP  
GND  
FOD2741A: tolerance 0.5%  
FOD2741B: tolerance 1%  
FOD2741C: tolerance 2%  
NC  
APPLICATIONS  
Power supplies regulation  
DC to DC converters  
PIN DEFINITIONS  
Pin Number  
Pin Name  
Pin function description  
1
2
3
4
5
6
7
8
NC  
C
Not connected  
Phototransistor Collector  
Phototransistor Emitter  
Not connected  
E
NC  
GND  
COMP  
FB  
Ground  
Error Amplifier Compensation. This pin is the output of the error amplifier. *  
Voltage Feedback. This pin is the inverting input to the error amplifier  
Anode LED. This pin is the input to the light emitting diode.  
LED  
* The compensation network must be attached between pins 6 and 7.  
© 2003 Fairchild Semiconductor Corporation  
Page 1 of 15  
12/9/04  

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