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FOD2711AS Datasheet(PDF) 1 Page - Fairchild Semiconductor

Part # FOD2711AS
Description  Optically Isolated Error Amplifier
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Manufacturer  FAIRCHILD [Fairchild Semiconductor]
Direct Link  http://www.fairchildsemi.com
Logo FAIRCHILD - Fairchild Semiconductor

FOD2711AS Datasheet(HTML) 1 Page - Fairchild Semiconductor

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©2003 Fairchild Semiconductor Corporation
www.fairchildsemi.com
FOD2711 Rev. 1.0.1
August 2008
FOD2711
Optically Isolated Error Amplifier
Features
Optocoupler, precision reference and error amplifier in
single package
1.240V ± 1% reference
CTR 100% to 200%
5,000V RMS isolation
UL approval E90700, Volume 2
CSA approval 1296837
VDE approval 40002463
BSI approval 8702, 8703
Applications
Power supplies regulation
DC to DC converters
Description
The FOD2711 Optically Isolated Amplifier consists of the
popular RC431A precision programmable shunt refer-
ence and an optocoupler. The optocoupler is a gallium
arsenide (GaAs) light emitting diode optically coupled to
a silicon phototransistor. The reference voltage toler-
ance 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 FOD2711, 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 a 8-pin dip white package.
Functional Bock Diagram
Package Outlines
8
8
1
8
1
1
1
2
3
4
5
6
7
8 LED
FB
COMP
GND
NC
C
E
NC


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