FOD2741A Datasheet, PDF (7/15 Pages) Fairchild Semiconductor – OPTICALLY ISOLATED ERROR AMPLIFIER

OPTICALLY ISOLATED
ERROR AMPLIFIER
FOD2741A
FOD2741B
FOD2741C
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. 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
V_COMP - 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. 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
T_A - Ambient Temperature (°C)
Fig. 12 – Off-State Current vs. Ambient Temperature
100
VCC = 37V
10
1
-40
-20
0
20
40
60
TA - Ambient Temperature (°C)
80
100
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)
© 2003 Fairchild Semiconductor Corporation
Page 7 of 15
12/9/04