FOD2743A_08 Datasheet, PDF (8/16 Pages) Fairchild Semiconductor – Optically Isolated Error Amplifier

Typical Performance Curves
Fig. 9a – LED Current vs. Cathode Voltage
15
TA = 25°C
VCOMP = VFB
10
5
0
-5
-10
-15
-1
0
1
2
3
VCOMP – CATHODE VOLTAGE (V)
Fig. 10 – Reference Voltage Variation vs. Ambient Temperature
1.0
0.8 ^{ILED = 1mA, 10mA}
Normalized to TA = 25°C
0.6
0.4
0.2
0.0
-0.2
-0.4
-0.6
-0.8
-1.0
-40
-20
0
20
40
60
80
100
TA – AMBIENT TEMPERATURE (°C)
Fig. 12 – Off–State Current vs. Ambient Temperature
100
VCC = 37V
10
1
-40
-20
0
20
40
60
80
100
TA – AMBIENT TEMPERATURE (°C)
Fig. 9b – LED Current vs. Cathode Voltage
1.0
TA = 25°C
VCOMP = VFB
0.5
0.0
-0.5
-1.0
–1
0
1
2
3
VCOMP – CATHODE VOLTAGE (V)
Fig. 11 – Reference Current vs Ambient Temperature
4.0
ILED = 1mA, 10mA
R1 = 10kΩ
3.5
3.0
2.5
2.0
1.5
1.0
-40
-20
0
20
40
60
80
100
TA – AMBIENT TEMPERATURE (°C)
Fig. 13 – Forward Current vs. Forward Voltage
20
15
10
25°C
70°C
0°C
5
0.9
1.0
1.1
1.2
1.3
1.4
VF – FORWARD VOLTAGE (V)
©2004 Fairchild Semiconductor Corporation
FOD2743A, FOD2743B, FOD2743C Rev. 1.0.1
8
www.fairchildsemi.com