TL431, TL431A, TL431B
TL432, TL432A, TL432B
SLVS543M –AUGUST 2004–REVISED JULY 2012
www.ti.com
REFERENCE VOLTAGE
vs
FREE-AIR TEMPERATURE
REFERENCE CURRENT
vs
FREE-AIR TEMPERATURE
2600
2580
2560
2540
5
4
3
V
= V
R1 = 10 kΩ
R2 = ∞
= 10 mA
KA
ref
I
= 10 mA
KA
I
V
ref
= 2550 mV
KA
2520
2500
V
ref
= 2495 mV
2480
2
1
0
2460
2440
2420
2400
V
= 2440 mV
ref
−75 −50 −25
0
25
50
75
100 125
−75 −50 −25
0
25
50
75 100 125
T
A
− Free-Air Temperature − °C
T
A
− Free-Air Temperature − °C
Figure 7.
Figure 8.
CATHODE CURRENT
vs
CATHODE VOLTAGE
CATHODE CURRENT
vs
CATHODE VOLTAGE
800
600
400
150
125
100
75
V
= V
V
= V
KA ref
KA
ref
T
A
= 25°C
T = 25°C
A
I
min
50
25
200
0
0
−25
−50
−75
−100
−200
−2
−1
0
1
2
3
−1
0
1
2
3
V
KA
− Cathode Voltage − V
V
KA
− Cathode Voltage − V
Figure 9.
Figure 10.
22
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