FOD2711 Datasheet, PDF (7/15 Pages) Fairchild Semiconductor – optically isolated error amplifier

OPTICALLY ISOLATED
ERROR AMPLIFIER
FOD2711
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
100
TA = 25°C
V_COMP = V_FB
50
0
-50
-100
-150
-1
0
1
2
VCOMP - CATHODE VOLTAGE (V)
Fig. 10 Reference Voltage vs Ambient Temperature
1.244
I_LED = 10mA
1.242
1.240
1.238
1.236
1.234
1.232
1.230
-40
-20
0
20
40
60
80
100
TA - AMBIENT TEMPERATURE (°C)
Fig. 11 Reference Current vs Ambient Temperature
280
ILED = 10mA
260 ^{R1 = 10 kΩ}
240
220
200
180
160
140
120
-40
-20
0
20
40
60
80
100
TA - AMBIENT TEMPERATURE (°C)
Fig. 12 Off-State Current vs Ambient Temperature
1000 ^{VCC = 13.2V}
100
10
1
0.1
-40
-20
0
20
40
60
80
100
TA - AMBIENT TEMPERATURE (°C)
© 2003 Fairchild Semiconductor Corporation
Page 7 of 15
4/14/03