TL431, A, B Series, NCV431A
Input
I
K
V
KA
Input
R1
I
ref
I
K
V
KA
Input
I
off
V
KA
V
ref
R2
V
ref
V
KA
+
V
ref
1
)
R1
)
I
S
R1
ref
R2
Figure 1. Test Circuit for V
KA
= V
ref
Figure 2. Test Circuit for V
KA
> V
ref
Figure 3. Test Circuit for I
off
150
IK , CATHODE CURRENT (mA)
IK , CATHODE CURRENT (
µ
A)
100
50
0
−50
−100
−2.0
V
KA
= V
ref
T
A
= 25°C
Input
I
K
V
KA
800
600 Input
400
200
0
V
KA
= V
ref
T
A
= 25°C
V
KA
I
K
I
Min
−1.0
0
1.0
2.0
3.0
−200
−1.0
0
1.0
V
KA
, CATHODE VOLTAGE (V)
2.0
3.0
V
KA
, CATHODE VOLTAGE (V)
Figure 4. Cathode Current versus
Cathode Voltage
Figure 5. Cathode Current versus
Cathode Voltage
Vref , REFERENCE INPUT VOLTAGE (mV)
2580
2560
2540
2520
2500
2480
2460
2440
2420
Input
V
ref
V
ref
Max = 2550 mV
Iref , REFERENCE INPUT CURRENT (
µ
A)
2600
V
KA
I
K
V
KA
= V
ref
I
K
= 10 mA
3.0
2.5
2.0
1.5
I
K
= 10 mA
1.0
0.5
0
−55
−25
0
25
50
75
100
125
Input
10k I
ref
I
K
V
KA
V
ref
Typ = 2495 mV
V
ref
Min = 2440 mV
2400
−55
−25
0
25
50
75
100
125
T
A
, AMBIENT TEMPERATURE (°C)
T
A
, AMBIENT TEMPERATURE (°C)
Figure 6. Reference Input Voltage versus
Ambient Temperature
Figure 7. Reference Input Current versus
Ambient Temperature
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