FOD2712 Fairchild Optoelectronics Group, FOD2712 Datasheet
FOD2712
Specifications of FOD2712
FOD2712FS
FOD2712_NL
FOD2712_NL
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FOD2712 Summary of contents
Page 1
... It is primarily intended for use as the error amplifier/ reference voltage/optocoupler function in isolated 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 elimi- nates the need for adjustments in many applications. ...
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... Typical Application FAN4803 PWM V 1 Control ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0.0 Functional Description Not connected Phototransistor Collector Phototransistor Emitter 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 amplifi ...
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... PD3 Total Power Dissipation Notes: 1. Derate linearly from 25° rate of 2.42mW/°C 2. Derate linearly from 25° rate of 1.42mW/°C. 3. Derate linearly from 25° rate of 2.42mW/°C. ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0 25°C unless otherwise specified) A Parameter -55 to +125 (1) ...
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... A 2. The dynamic impedance is defined as |Z resistors (see Figure 2), the total dynamic impedance of the circuit is given by ------- - Z 1 OUT, TOT OUT I ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0 12V 25°C unless otherwise specified Test Conditions I = 10mA, V LED (Fig. COMP FB (Fig ...
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... Vcm, to assure that the output will remain high. Common mode transient immunity at output low is the maximum tolerable (negative) dVcm/dt on the trailing edge of the common pulse signal,Vcm, to assure that the output will remain low. ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0 12V 25°C unless otherwise specified) (Continued) ...
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... Test Circuits I (LED REF 5 Figure (min) Test Circuit REF F, LED I (LED REF Figure 3. I Test Circuit REF Figure 5. I Test Circuit CEO ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0 Figure CEO (LED COMP R2 V REF Test Circuit REF/ COMP I (OFF (LED Figure 4 ...
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... Test Circuits (Continued + OUT 2.2k V OUT ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0 0 Figure 7. Frequency Response Test Circuit VCM _ + 10V P-P Figure 8. CMH and CML Test Circuit 0.47V = www.fairchildsemi.com ...
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... CATHODE VOLTAGE (V) COMP Fig. 10 Reference Voltage vs. Ambient Temperature 1.254 I = 10mA LED 1.248 1.242 1.236 1.230 -40 - – AMBIENT TEMPERATURE ( C) A ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0.0 Fig. 9b LED Current vs. Cathode Voltage 150 T 120 A V COMP -30 -60 -90 -120 -150 -1.0 0.5 1 ...
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... V – FORWARD VOLTAGE (V) F Fig. 15 Collector Current vs. Ambient Temperature -40 - – AMBIENT TEMPERATURE ( C) A ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0.0 (Continued) 1000 V CE 100 0.1 1.20 1.25 1.30 1.35 -40 Fig. 16 Current Transfer Ratio vs. LED Current 160 140 I = 20mA LED ...
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... Typical Performance Curves Fig. 18 Collector Current vs. Collector Voltage – COLLECTOR-EMITTER VOLTAGE (V) CE -10 -15 ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0.0 (Continued) Fig. 19 Delta LED LED - LED LED - -40 Fig. 20 Voltage Gain vs. Frequency 0 500 - 100 FREQUENCY kHz 10 /Delta V vs. Ambient Temperature REF ...
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... Feedback Output voltage of a converter is determined by selecting a resistor divider from the regulated output to the FB pin. The FOD2712 attempts to regulate its FB pin to the ref- erence voltage, 1.24V. The ratio of the two resistors should thus be ...
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... Package specifications do not expand the terms of Fairchild’s worldwide terms and conditions, specifically the warranty therein, which covers Fairchild products. Always visit Fairchild Semiconductor’s online packaging area for the most recent package drawings: http://www.fairchildsemi.com/packaging/ ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0.0 8 0.164 (4.16) 0.144 (3.66) 1 ...
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... R2V Marking Information Definitions ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0.0 V VDE 0884 R1 Tape and reel (500 units per reel) R1V VDE 0884, Tape and reel (500 units per reel) R2 Tape and reel (2500 units per reel) R2V VDE 0884, Tape and reel (2500 units per reel) ...
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... C 140 120 100 ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0.0 8.0 0.10 2.0 0.05 4.0 0.10 6.40 0.20 260 C Time above 183 Sec 1.822 C/Sec Ramp up rate 33 Sec 60 120 180 Time (s) 14 Ø1.5 MIN 1 ...
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... Product Status Advance Information Formative / In Design Preliminary First Production No Identification Needed Full Production Obsolete Not In Production ©2003 Fairchild Semiconductor Corporation FOD2712 Rev. 1.0.0 ® Programmable Active Droop™ SM ® QFET QS™ Quiet Series™ RapidConfigure™ ™ Saving our world, 1mW/W/ time™ ...