FOD2741A_08 Datasheet, PDF (8/15 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)
2.510
2.508
Fig. 10 – Reference Voltage vs. Ambient Temperature
ILED = 10mA
2.506
2.504
2.502
2.500
2.498
2.496
2.494
2.492
2.490
-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
1.30
ILED = 10mA
R1 = 10kΩ
1.25
1.20
1.15
1.10
1.05
-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
FOD2741A, FOD2741B, FOD2741C Rev. 1.0.1
8
www.fairchildsemi.com