FOD2742B Datasheet PDF - Fairchild

●The FOD2742B is a 1-channel 8-pin Optically Isolated Amplifier consists of the popular KA431 precision programmable shunt reference and an optocoupler. The optocoupler is a gallium arsenide (GaAs) LED optically coupled to a silicon phototransistor. It comes in 3 grades of reference voltage tolerance of 1%. The Current Transfer Ratio (CTR) ranges from 100% to 200%. It also has an outstanding temperature coefficient of 50ppm/°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 FOD2742, 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.

● 2.5V reference

● 2500V RMS isolation