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FOD2743CSD データシート(PDF) 1 Page - Fairchild Semiconductor |
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FOD2743CSD データシート(HTML) 1 Page - Fairchild Semiconductor |
1 / 16 page ©2004 Fairchild Semiconductor Corporation www.fairchildsemi.com FOD2743A, FOD2743B, FOD2743C Rev. 1.0.1 August 2008 FOD2743A, FOD2743B, FOD2743C Optically Isolated Error Amplifier Features ■ Optocoupler, precision reference and error amplifier in a 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 50ppm/°C max ■ FOD2743A: tolerance 0.5% FOD2743B: tolerance 1% FOD2743C: tolerance 2% Applications ■ Power supplies regulation ■ DC to DC converters Description The FOD2743 Optically Isolated Amplifier consists of the popular KA431 precision programmable shunt reference and an optocoupler. The optocoupler is a gallium ars- enide (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 iso- lated AC to DC power supplies and dc/dc converters. When using the FOD2743, power supply designers can reduce the component count and save space in tightly packaged designs. The tight tolerance reference elimi- nates the need for adjustments in many applications. The device comes in an 8-pin dip white package. Functional Bock Diagram Package Outlines 8 8 1 8 1 1 1 2 3 4 5 6 7 8 NC C E NC LED COMP GND FB |
同様の部品番号 - FOD2743CSD |
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同様の説明 - FOD2743CSD |
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