FOD2712R1 Datasheet, PDF (8/16 Pages) Fairchild Semiconductor – Optically Isolated Error Amplifier

Typical Performance Curves
Fig. 9a LED Current vs. Cathode Voltage
15
T_A = 25°C
10 ^{VCOMP = VFB}
5
0
-5
-10
-15
-1.0
-0.5
0.0
0.5
1.0
1.5
V_COMP – CATHODE VOLTAGE (V)
Fig. 9b LED Current vs. Cathode Voltage
150
120
T_A = 25°C
V_COMP = V_FB
90
60
30
0
-30
-60
-90
-120
-150
-1.0
-0.5
0.0
0.5
1.0
1.5
V_COMP – CATHODE VOLTAGE (V)
Fig. 10 Reference Voltage vs. Ambient Temperature
1.254
I_LED = 10mA
1.248
1.242
1.236
1.230
-40
-20
0
20
40
60
80
T_A – AMBIENT TEMPERATURE (°C)
Fig. 11 Reference Current vs. Ambient Temperature
350
I_LED = 10mA
R₁ = 10kΩ
300
250
200
150
100
50
-40 -20
0
20
40
60
80
100
T_A – AMBIENT TEMPERATURE (°C)
Fig. 12 Off Current vs. Ambient Temperature
100 _{VLED = 13.2V}
V_FB = 0
10
1
0.1
-40 -20
0
20
40
60
80
100
T_A – AMBIENT TEMPERATURE (°C)
©2003 Fairchild Semiconductor Corporation
FOD2712 Rev. 1.0.1
8
www.fairchildsemi.com