TL431, TL432
Figure 13. Reference voltage vs. cathode
current
Electrical characteristics
Figure 14. Zoom on reference voltage vs.
cathode current
Figure 15. Reference current vs. temperature Figure 16. Off-state cathode current vs.
temperature
2.0
0.4
V = 36 V
KA
I =10 mA
K
V = 0V
REF
1.5
R =10kΩ
1
0.3
R2= + ∝
1.0
0.2
0.5
0.1
0.0
-40 -20 0 20 40 60 80 100 120
Temperature °C
0.0
-40 -20 0
20 40 60 80 100 120
Temperature (°C)
Figure 17. Ratio of change in Vref to change in Figure 18. Static impedance RKA vs.
VKA vs. temperature
temperature
0.0
0.20
0.18
V =V
KA REF
-0.5
I = 10 mA
K
0.16
-1.0
0.14
-1.5
0.12
-2.0
-40 -20 0
20 40 60 80 100 120
Temperature (°C)
0.10
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Doc ID 4467 Rev 11
9/21