FOD2712A Datasheet | Fairchild Semiconductor

Features - Optocoupler, precision reference and error amplifier in single package - 1.240V ± 1% reference - CTR 100% to 200% - 2,500V RMS isolation - UL approval E90700 Applications - Power system for workstations - Tele central office supply - Tele bricks Description The FOD2712A Optically Isolated Amplifier consists of the popular AZ431L precision programmable shunt reference and an optocoupler. The optocoupler is a gallium arsenide (Ga As) light emitting diode optically coupled to a silicon phototransistor. The reference voltage tolerance is 1%. The current transfer ratio (CTR) ranges from 100% to 200%. 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 FOD2712A, 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 pact 8-pin small outline package. Schematic NC 1 C2 E3 NC 4 8 LED 7 FB 6 P 5 GND Package Outline ©2010 Fairchild Semiconductor Corporation FOD2712A Rev. 1.0.1 .fairchildsemi. - Optically Isolated Error Amplifier Pin Definitions Pin Number Pin Name Functional Description Not connected Phototransistor Collector Phototransistor Emitter Not connected Ground Error Amplifier pensation. This pin is the output of the error amplifier.-...