FOD2743BTV Fairchild Optoelectronics Group, FOD2743BTV Datasheet

OPTOCOUPLER TRANS OUT 1% 8DIP

FOD2743BTV

Manufacturer Part Number
FOD2743BTV
Description
OPTOCOUPLER TRANS OUT 1% 8DIP
Manufacturer
Fairchild Optoelectronics Group
Datasheet

Specifications of FOD2743BTV

Number Of Channels
1
Input Type
DC
Voltage - Isolation
5000Vrms
Current Transfer Ratio (min)
50% @ 1mA
Current Transfer Ratio (max)
100% @ 1mA
Voltage - Output
70V
Current - Output / Channel
50mA
Vce Saturation (max)
400mV
Output Type
Transistor
Mounting Type
Through Hole
Package / Case
8-DIP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Dc Forward (if)
-
©2004 Fairchild Semiconductor Corporation
FOD2743A, FOD2743B, FOD2743C Rev. 1.0.1
FOD2743A, FOD2743B, FOD2743C
Optically Isolated Error Amplifier
Features
Applications
Functional Bock Diagram
Optocoupler, precision reference and error amplifier in
a single package
2.5V reference
CTR 50% to 100% at 1mA
5,000V RMS isolation
UL approval E90700, Vol. 2
CSA approval 1296837
VDE approval pending
BSI approval pending
Low temperature coefficient 50ppm/°C max
FOD2743A: tolerance 0.5%
FOD2743B: tolerance 1%
FOD2743C: tolerance 2%
Power supplies regulation
DC to DC converters
COMP
GND
LED
FB
1
2
3
4
8 NC
7
6
5
C
E
NC
Package Outlines
Description
The FOD2743 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 50% to
100%. 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 FOD2743, 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 an 8-pin dip white package.
8
1
8
1
8
www.fairchildsemi.com
August 2008
1

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FOD2743BTV Summary of contents

Page 1

FOD2743A, FOD2743B, FOD2743C Optically Isolated Error Amplifier Features Optocoupler, precision reference and error amplifier in a single package 2.5V reference CTR 50% to 100% at 1mA 5,000V RMS isolation UL approval E90700, Vol. 2 CSA approval 1296837 VDE approval pending ...

Page 2

Pin Definitions Pin Number Pin Name 1 LED 2 COMP 3 GND *The compensation network must be attached between pins 2 and 4. Typical Application FAN4803 PWM V 1 Control ...

Page 3

Absolute Maximum Ratings Stresses exceeding the absolute maximum ratings may damage the device. The device may not function or be operable above the recommended operating conditions and stressing the parts to these levels is not recommended. In addition, extended exposure ...

Page 4

Electrical Characteristics Input Characteristics Symbol Parameter V LED Forward Voltage F V Reference Voltage REF (2) V Deviation of V Over REF (DEV) REF (2) Temperature V / Ratio of V Variation REF REF V to the Output of the ...

Page 5

Electrical Characteristics Isolation Characteristics Symbol Parameter I Input-Output Insulation I-O Leakage Current V Withstand Insulation ISO Voltage R Resistance (Input to Output) I-O Switching Characteristics Symbol Parameter BW Bandwidth CMH Common Mode Transient Immunity at Output HIGH CML Common Mode ...

Page 6

Test Circuits I (LED REF 3 Figure (min.) Test Circuit REF F, LED I (LED REF Figure 3. I Test Circuit ...

Page 7

Test Circuits (Continued + OUT 2.2k V OUT ©2004 Fairchild Semiconductor Corporation FOD2743A, FOD2743B, FOD2743C Rev. 1.0 1mA 0.1 V ...

Page 8

Typical Performance Curves Fig. 9a – LED Current vs. Cathode Voltage COMP -10 - – CATHODE VOLTAGE (V) COMP Fig. 10 – ...

Page 9

Typical Performance Curves Fig. 14 – Dark Current vs. Ambient Temperature 10000 V = 10V CE 1000 100 10 1 0.1 -40 - – AMBIENT TEMPERATURE ( C) A Fig. 16 – Current Transfer Ratio vs. ...

Page 10

Typical Performance Curves ©2004 Fairchild Semiconductor Corporation FOD2743A, FOD2743B, FOD2743C Rev. 1.0.1 (Continued) Fig. 20 – Voltage Gain vs. Frequency 10V 10mA 500 1mA ...

Page 11

The FOD2743 The FOD2743 is an optically isolated error amplifier. It incorporates three of the most common elements neces- sary to make an isolated power supply, a reference volt- age, an error amplifier, and an optocoupler functionally equivalent ...

Page 12

Package Dimensions Through Hole PIN 1 ID 0.270 (6.86) 0.250 (6.35 0.390 (9.91) 0.370 (9.40) 0.070 (1.78) 0.045 (1.14) 0.020 (0.51) MIN 0.200 (5.08) 0.140 (3.55) 0.154 (3.90) 0.120 (3.05) 0.022 (0.56) ...

Page 13

Ordering Information Option No Option SDV Marking Information Definitions ©2004 Fairchild Semiconductor Corporation FOD2743A, FOD2743B, FOD2743C Rev. 1.0.1 Example Part Number FOD2743A Standard Through Hole FOD2743AS Surface Mount ...

Page 14

Carrier Tape Specifications Symbol ©2004 Fairchild Semiconductor Corporation FOD2743A, FOD2743B, FOD2743C Rev. 1.0.1 ...

Page 15

Reflow Profile • Peak reflow temperature • Time of temperature higher than 245°C • Number of reflows 300 250 200 150 100 50 ©2004 Fairchild Semiconductor Corporation FOD2743A, FOD2743B, FOD2743C Rev. 1.0.1 260°C (package surface temperature) 40 seconds or less ...

Page 16

TRADEMARKS The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not intended exhaustive list of all such trademarks. Build it Now™ CorePLUS™ CorePOWER™ CROSSVOLT™ CTL™ Current ...

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