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FOD2741AT

Description
Transistor Output Optocouplers Error amplifier Optocoupler
CategoryLED optoelectronic/LED    photoelectric   
File Size302KB,15 Pages
ManufacturerFairchild
Websitehttp://www.fairchildsemi.com/
Environmental Compliance
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FOD2741AT Overview

Transistor Output Optocouplers Error amplifier Optocoupler

FOD2741AT Parametric

Parameter NameAttribute value
Is it Rohs certified?conform to
MakerFairchild
package instructionDIP-8
Reach Compliance Codecompliant
Other featuresUL APPROVED
Coll-Emtr Bkdn Voltage-Min70 V
ConfigurationSINGLE
Nominal current transfer ratio100%
Maximum dark power50 nA
Maximum forward current0.02 A
Maximum insulation voltage5000 V
JESD-609 codee3
Number of components1
Maximum operating temperature85 °C
Minimum operating temperature-25 °C
Optoelectronic device typesTRANSISTOR OUTPUT OPTOCOUPLER
Terminal surfaceMatte Tin (Sn)
FOD2741A, FOD2741B, FOD2741C — Optically Isolated Error Amplifier
August 2008
FOD2741A, FOD2741B, FOD2741C
Optically Isolated Error Amplifier
Features
Optocoupler, precision reference and error amplifier in
Description
The FOD2741 Optically Isolated Amplifier consists of the
popular KA431 precision programmable shunt reference
and an optocoupler. The optocoupler is a gallium ars-
enide (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 iso-
lated AC to DC power supplies and DC/DC converters.
When using the FOD2741, 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.
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
Functional Bock Diagram
Package Outlines
NC
1
8 LED
8
1
C
2
7 FB
E
3
6 COMP
8
8
1
1
NC
4
5 GND
©2004 Fairchild Semiconductor Corporation
FOD2741A, FOD2741B, FOD2741C Rev. 1.0.1
www.fairchildsemi.com

FOD2741AT Related Products

FOD2741AT FOD2741CT_Q FOD2741CSDV FOD2741A_Q FOD2741CTV FOD2741B_Q FOD2741BSDV_Q FOD2741BT FOD2741BS_Q FOD2741CS_Q
Description Transistor Output Optocouplers Error amplifier Optocoupler Transistor Output Optocouplers Error amplifier Optocoupler Transistor Output Optocouplers Error amplifier Optocoupler Transistor Output Optocouplers Error amplifier Optocoupler Transistor Output Optocouplers Error amplifier Optocoupler Transistor Output Optocouplers Error amplifier Optocoupler Transistor Output Optocouplers Error amplifier Optocoupler Transistor Output Optocouplers Error amplifier Optocoupler
Product Category - Transistor Output Optocouplers - Transistor Output Optocouplers - Transistor Output Optocouplers Transistor Output Optocouplers - Transistor Output Optocouplers Transistor Output Optocouplers
Manufacturer - Fairchild - Fairchild - Fairchild Fairchild - Fairchild Fairchild
RoHS - No - No - No No - No No
Package / Case - PDIP-8 - PDIP-8 - PDIP-8 SMD-DIP-8 - SMD-DIP-8 SMD-DIP-8
Output Type - Phototransistor - Phototransistor - Phototransistor Phototransistor - Phototransistor Phototransistor
Number of Channels - 1 Channel - 1 Channel - 1 Channel 1 Channel - 1 Channel 1 Channel
If - Forward Current - 20 mA - 20 mA - 20 mA 20 mA - 20 mA 20 mA
Maximum Collector Emitter Voltage - 30 V - 30 V - 30 V 30 V - 30 V 30 V
Maximum Collector Current - 50 mA - 50 mA - 50 mA 50 mA - 50 mA 50 mA
Isolation Voltage - 5000 Vrms - 5000 Vrms - 5000 Vrms 5000 Vrms - 5000 Vrms 5000 Vrms
Maximum Collector Emitter Saturation Voltage - 0.4 V - 0.4 V - 0.4 V 0.4 V - 0.4 V 0.4 V
Vf - Forward Voltage - 1.5 V - 1.5 V - 1.5 V 1.5 V - 1.5 V 1.5 V
Maximum Operating Temperature - + 85 C - + 85 C - + 85 C + 85 C - + 85 C + 85 C
Minimum Operating Temperature - - 40 C - - 40 C - - 40 C - 40 C - - 40 C - 40 C
Packaging - Bulk - Bulk - Bulk Cut Tape - Bulk Bulk
Collector-Emitter Breakdown Voltage - 70 V - 70 V - 70 V 70 V - 70 V 70 V
Current Transfer Ratio - 100 % to 200% - 100 % to 200% - 100 % to 200% 100 % to 200% - 100 % to 200% 100 % to 200%
Height - 3.94 mm - 3.94 mm - 3.94 mm 3.94 mm - 3.94 mm 3.94 mm
Length - 9.91 mm - 9.91 mm - 9.91 mm 9.91 mm - 9.91 mm 9.91 mm
Mounting Style - Through Hole - Through Hole - Through Hole SMD/SMT - SMD/SMT SMD/SMT
Reference Voltage - 2.5 V - 2.495 V - 2.495 V 2.495 V - 2.495 V 2.5 V
Width - 6.86 mm - 6.86 mm - 6.86 mm 6.86 mm - 6.86 mm 6.86 mm
Troublesome button issues
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