FOD2711AV

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The optocoupler is a gallium arsenide (GaAs) 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%. ■ ■ ■ ■ single package 1.240V ± 1% reference CTR 100% to 200% 5,000V RMS isolation UL approval E90700, Volume 2 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. Applications ■ Power supplies regulation ■ DC to DC converters When using the FOD2711A, 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 8-pin dip white package. Functional Bock Diagram NC 1 8 LED C 2 7 FB E 3 6 COMP Package Outlines 8 1 8 NC 4 ©2010 Fairchild Semiconductor Corporation FOD2711A Rev. 1.0.0 5 GND 8 1 1 www.fairchildsemi.com FOD2711A — Optically Isolated Error Amplifier June 2010 Pin Number Pin Name Pin Description 1 NC 2 C Phototransistor Collector 3 E Phototransistor Emitter 4 NC 5 GND 6 COMP 7 FB 8 LED Not connected Not connected Ground Error Amplifier Compensation. This pin is the output of the error amplifier.* Voltage Feedback. This pin is the inverting input to the error amplifier Anode LED. This pin is the input to the light emitting diode. *The compensation network must be attached between pins 6 and 7. Typical Application V1 FAN4803 PWM Control VO FOD2711A 2 8 6 3 7 5 ©2010 Fairchild Semiconductor Corporation FOD2711A Rev. 1.0.0 R1 R2 www.fairchildsemi.com 2 FOD2711A — Optically Isolated Error Amplifier Pin Definitions 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 Parameter Value Units TSTG Storage Temperature -40 to +125 °C TOPR Operating Temperature -40 to +85 °C 260 for 10 sec. °C 13.2 V TSOL Lead Solder Temperature VLED Input Voltage ILED Input DC Current 20 mA VCEO Collector-Emitter Voltage 30 V VECO Emitter-Collector Voltage 7 V Collector Current 50 mA PD1 IC Input Power Dissipation(1) 145 mW PD2 Transistor Power Dissipation(2) 85 mW 145 mW PD3 Total Power Dissipation(3) Notes: 1. Derate linearly from 25°C at a rate of 2.42mW/°C 2. Derate linearly from 25°C at a rate of 1.42mW/°C. 3. Derate linearly from 25°C at a rate of 2.42mW/°C. ©2010 Fairchild Semiconductor Corporation FOD2711A Rev. 1.0.0 www.fairchildsemi.com 3 FOD2711A — Optically Isolated Error Amplifier Absolute Maximum Ratings (TA = 25°C unless otherwise specified) Input Characteristics Symbol VF VREF Parameter Test Conditions LED Forward Voltage ILED = 10mA, VCOMP = VFB (Fig. 1) Reference Voltage VCOMP = VFB, ILED = 10mA (Fig.1) Min. Typ.* Max. -40°C to +85°C 1.221 25°C 1.228 VREF (DEV) Deviation of VREF Over Temperature(4) ∆VREF / ∆VCOMP Unit 1.5 V 1.259 V 1.240 1.252 4 12 mV TA = -40 to +85°C Ratio of Vref Variation to the Output of the Error Amplifier ILED = 10 mA, VCOMP = VREF to 12V (Fig. 2) -1.5 -2.7 mV/V Feedback Input Current ILED = 10mA, R1 = 10kΩ (Fig. 3) 0.15 0.5 µA IREF (DEV) Deviation of IREF Over Temperature(4) TA = -40°C to +85°C 0.15 0.3 µA ILED (MIN) Minimum Drive Current VCOMP = VFB (Fig. 1) 55 80 µA I(OFF) Off-State Error Amplifier Current VLED = 6V, VFB = 0 (Fig. 4) 0.001 0.1 µA Error Amplifier Output Impedance(5) VCOMP = VFB, ILED = 0.1mA to 15mA, f 80µA R TOP 10V – 5V ----------------------------------- < 926µA or R COLLECTOR > 5.4KΩ; R COLLECTOR select 10kΩ to allow some margin. ©2010 Fairchild Semiconductor Corporation FOD2711A Rev. 1.0.0 www.fairchildsemi.com 11 FOD2711A — Optically Isolated Error Amplifier The FOD2711A Option Example Part Number Description No Option FOD2711A S FOD2711AS SD FOD2711ASD T FOD2711AT 0.4" Lead Spacing V FOD2711AV VDE0884 TV FOD2711ATV VDE0884; 0.4” Lead Spacing SV FOD2711ASV VDE0884; Surface Mount SDV FOD2711ASDV Standard Through Hole Surface Mount Lead Bend Surface Mount; Tape and Reel VDE0884; Surface Mount; Tape and Reel Marking Information 1 V 3 2711A 2 XX YY B 6 4 5 Definitions 1 Fairchild logo 2 Device number 3 VDE mark (Note: Only appears on parts ordered with VDE option – See order entry table) 4 Two digit year code, e.g., ‘03’ 5 Two digit work week ranging from ‘01’ to ‘53’ 6 Assembly package code ©2010 Fairchild Semiconductor Corporation FOD2711A Rev. 1.0.0 www.fairchildsemi.com 12 FOD2711A — Optically Isolated Error Amplifier Ordering Information D0 P0 t K0 P2 E F A0 W1 W B0 P User Direction of Feed d Symbol Description W t D1 Dimension in mm Tape Width 16.0 ± 0.3 Tape Thickness 0.30 ± 0.05 P0 Sprocket Hole Pitch 4.0 ± 0.1 D0 Sprocket Hole Diameter 1.55 ± 0.05 E Sprocket Hole Location 1.75 ± 0.10 F Pocket Location 7.5 ± 0.1 4.0 ± 0.1 P2 P Pocket Pitch 12.0 ± 0.1 A0 Pocket Dimensions 10.30 ±0.20 B0 10.30 ±0.20 K0 4.90 ±0.20 W1 d R Cover Tape Width 1.6 ± 0.1 Cover Tape Thickness 0.1 max Max. Component Rotation or Tilt 10° Min. Bending Radius 30 Reflow Profile 245 C, 10–30 s Temperature (°C) 300 260 C peak 250 200 150 Time above 183C,