FOD2712R1

FOD2712R1 Datasheet


FOD2712 Optically Isolated Error

Part Datasheet
FOD2712R1 FOD2712R1 FOD2712R1 (pdf)
Related Parts Information
FOD2712 FOD2712 FOD2712
FOD2712R2 FOD2712R2 FOD2712R2
FOD2712R1V FOD2712R1V FOD2712R1V
FOD2712R2V FOD2712R2V FOD2712R2V
FOD2712V FOD2712V FOD2712V
PDF Datasheet Preview
FOD2712 Optically Isolated Error

FOD2712 Optically Isolated Error Amplifier

December 2008
• Optocoupler, precision reference and error amplifier in single package
• 1.240V ± 1% reference
• CTR 100% to 200%
• 2,500V RMS isolation
• VDE approval 136616
• BSI approval 8661 and 8662
• UL approval E90700
• CSA approval 1113643
• Power system for workstations
• Telecom central office supply
• Telecom bricks

The FOD2712 Optically Isolated Amplifier consists of the popular RC431A precision programmable shunt reference and an optocoupler. The optocoupler is a gallium arsenide GaAs light emitting diode optically coupled to a silicon phototransistor. The reference voltage tolerance is The current transfer ratio CTR ranges from 100% to

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 FOD2712, 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 compact 8-pin small outline package.

Schematic

NC 1 C2 E3
8 LED 7 FB 6 COMP 5 GND

FOD2712 Optically Isolated Error

Pin Number

Pin Name

Functional Description

Not connected

Phototransistor Collector

Phototransistor Emitter

Not connected

Ground

COMP

Error Compensation. This pin is the output of the error

Voltage Feedback. This pin is the inverting input to the error

Anode LED. This pin is the input to the light emitting diode.
*The compensation network must be attached between pins 6 and

FAN4803

Control

FOD2712

R1 R2
2003 Fairchild Semiconductor Corporation

FOD2712 Optically Isolated Error

Absolute Maximum Ratings TA = 25°C unless otherwise

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 to stresses above the recommended operating conditions may affect device reliability. The absolute maximum ratings are stress ratings only.

Symbol TSTG TOPR

VLED ILED VCEO VECO IC PD1 PD2 PD3

Parameter

Storage Temperature Operating Temperature refer to page 14 Input Voltage Input DC Current Collector-Emitter Voltage Emitter-Collector Voltage Collector Current Input Power Dissipation 1 Transistor Power Dissipation 2 Total Power Dissipation 3

Value -55 to +125 -40 to +85
20 30 7 50 145 85 145
Ordering Information

Option V R1

R1V R2 R2V

Order Entry V R1

R1V R2 R2V

Description VDE 0884 Tape and reel 500 units per reel VDE 0884, Tape and reel 500 units per reel Tape and reel 2500 units per reel VDE 0884, Tape and reel 2500 units per reel

Marking Information
2712 2 V X YY S 6
1 Fairchild logo 2 Device number 3 VDE mark Note Only appears on parts ordered with VDE
option See order entry table 4 One digit year code, e.g., ‘3’ 5 Two digit work week ranging from ‘01’ to ‘53’ 6 Assembly package code
2003 Fairchild Semiconductor Corporation

FOD2712 Optically Isolated Error

Carrier Tape Specifications
± MAX
± ±

MAX User Direction of Feed

Dimensions in mm

MIN ±

Reflow Profile
300 280 260 240 220 200 180 160 °C 140 120 100
80 60 40 20
260°C
>245°C = 42 Sec

Time above 183°C = 90 Sec
1.822°C/Sec Ramp up rate
33 Sec 60

Time s
2003 Fairchild Semiconductor Corporation

FOD2712 Optically Isolated Error

TRADEMARKS

The following includes registered and unregistered trademarks and service marks, owned by Fairchild Semiconductor and/or its global subsidiaries, and is not intended to be an exhaustive list of all such trademarks.

Build it Now CorePLUS CorePOWER CROSSVOLT CTL Current Transfer Logic EfficentMax EZSWITCH *

Fairchild FACT Quiet Series FastvCore * FPS F-PFS

Global Power ResourceSM Green FPS Green FPS e-Series GTO IntelliMAX ISOPLANAR MegaBuck MICROCOUPLER MicroFET MicroPak MillerDrive MotionMax Motion-SPM

PDP SPM Power-SPM PowerXS

Programmable Active Droop QS Quiet Series RapidConfigure

Saving our world, 1mW/W/kW at a time SmartMax SMART START STEALTH SuperFET SuperSOT -3 SuperSOT -6 SuperSOT -8 SupreMOS SyncFET

The Power

TinyBoost TinyBuck TINYOPTO TinyPower TinyPWM TinyWire µSerDes

Ultra FRFET UniFET VCX VisualMax XS
* EZSWITCH and are trademarks of System General Corporation, used under license by Fairchild Semiconductor.
More datasheets: VG3-3 | VG3-6 | B39321B3763Z810 | MMBD4448HTM-7 | X3C09F1-20S | CY7C1350G-166AXI | FQA38N30 | FOD2712 | FOD2712R2 | FOD2712R1V


Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived FOD2712R1 Datasheet file may be downloaded here without warranties.

Datasheet ID: FOD2712R1 514959