FOD2743A Datasheet, PDF (8/15 Pages) Fairchild Semiconductor – OPTICALLY ISOLATED ERROR AMPLIFIER

OPTICALLY ISOLATED
ERROR AMPLIFIER
FOD2743A
FOD2743B
FOD2743C
Fig. 14 – Dark Current vs. Ambient Temperature
10000
VCE = 10V
1000
100
10
1
0.1
-40
-20
0
20
40
60
TA - Ambient Temperature (°C)
80
100
Fig. 15 – Collector Current vs. Ambient Temperature
32
1.6
V_CE = 5V
28
1.4
24
ILED = 20mA
1.2
20
ILED = 1mA
1.0
16
0.8
ILED = 10mA
12
0.6
8
ILED = 5mA
0.4
4
0.2
0
-40
-20
0
20
40
60
TA - Ambient Temperature (°C)
0.0
80 100
Fig. 16 – Current Transfer Ratio vs. LED Current
160
VCE = 5V
140
120
25°C
100
0°C
80
-40°C
60
70°C
40
100°C
20
0
0.1
1
10
ILED - Forward Current (mA)
Fig. 17 – Saturation Voltage vs. Ambient Temperature
0.26
0.24
0.22
0.20
0.18
ILED = 10mA
IC = 2.5mA
0.16
0.14
ILED = 1mA
IC = 0.1mA
0.12
0.10
0.08
0.06
-40
-20
0
20
40
60
TA - Ambient Temperature (°C)
80
100
Fig. 18 – Collector Current vs. Collector Voltage
35
TA = 25°C
30
ILED = 20mA
25
20
15
ILED = 10mA
10
ILED = 5mA
5
ILED = 1mA
0
0
1
2
3
4
5
6
7
8
9 10
VCE - Collector-Emitter Voltage (V)
Fig. 19 – Rate of Change Vref to Vout vs. Temperature
-0.32
-0.34
-0.36
-0.38
-0.40
-0.42
-0.44
-0.46
-60 -40 -20
0
20 40 60
Temperature - °C
80 100 120
© 2004 Fairchild Semiconductor Corporation
Page 8 of 15
4/8/04