FOD2741C Datasheet | Fairchild Semiconductor

Features - Optocoupler, precision reference and error amplifier 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 coefficient 50ppm/°C max. - FOD2741A: tolerance 0.5% FOD2741B: tolerance 1% FOD2741C: tolerance 2% Applications - Power supplies regulation - DC to DC converters Description The FOD2741 Optically Isolated Amplifier consists of the popular KA431 precision programmable shunt reference and an optocoupler. The optocoupler is a gallium arsenide (Ga As) light emitting diode optically coupled to a silicon phototransistor. It es 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 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 converters. When using the FOD2741, power supply designers can reduce the ponent count and save space in tightly packaged designs. The tight tolerance reference eliminates the need for adjustments in many applications. The device es in a 8-pin dip white package. Functional Bock Diagram NC 1 C2 E3 NC 4 8 LED 7 FB 6 P 5 GND Package Outlines 8 1 8 1 8 1 ©2004 Fairchild Semiconductor Corporation FOD2741A, FOD2741B, FOD2741C Rev. 1.0.1 .fairchildsemi. FOD2741A, FOD2741B, FOD2741C - Optically Isolated Error Amplifier Pin Definitions Pin Number Pin Name Pin Description Not connected Phototransistor Collector Phototransistor Emitter Not...