onsemi FOD2742B

Optocoupler DC-IN 1-CH Transistor DC-OUT 8-Pin SOIC N Box

OPTICALLY ISOLATED ERROR AMPLIFIER | OPTOISO 2.5KV TRANSISTOR 8SOIC

SMALL OUTLINE ERROR AMPLIFIER OPTOCOUPLER, TRANSISTOR OUTPUT

FOD2742B Series 2500 Vrms 100 % CTR Optically Isolated Error Amplifier - SOIC-8

8-PIN SOIC Error Amplifier Optocoupler

ISOLATED ERROR AMPLIFIER; No. of Channels:1; Isolation Voltage:2.5kV; Optocoupler Output Type:Phototransistor; Input Current:10mA; Output Voltage:70V; Opto Case Style:SOIC; No. of Pins:8; SVHC:No SVHC (20-Jun-2011); Approval Bodies:BSI, CSA, VDE; Approval Category:UL Recognised; Bandwidth:50kHz; CMR:1.0kV/µs; Collector Emitter Voltage V(br)ceo:70V; Continuous Collector Current Ic Max:50mA; Current Transfer Ratio Max:200%; Current Transfer Ratio Min:100%; External Depth:3.9mm; External Length / Height:3.38mm; External Width:4.88mm; Forward Voltage VF Max:1.5V; Input Voltage Max:37V; Operating Temperature Range:-40°C to +85°C; Output Type:Phototransistor; Power Dissipation Pd:145mW; Power Dissipation Pd:145mW; Reference Voltage:2.5V; Tolerance:1%; Voltage Vf Typ:1.2V

The FOD2742 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%. 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 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. The device comes in a 8-pin small outline package.