Datasheet

TL431, A, B Series
5
MOTOROLA ANALOG IC DEVICE DATA
I
K
V
ref
V
KA
Input
Figure 1. Test Circuit for V
KA
= V
ref
Input
I
K
R2
I
ref
V
ref
V
KA
R1
Figure 2. Test Circuit for V
KA
> V
ref
V
KA
V
ref
1
R1
R2
I
ref
R1
I
off
Input V
KA
Figure 3. Test Circuit for I
off
–1.0
I
Min
200
400
V
KA
, CATHODE VOLTAGE (V)
–200
0
0
1.0 2.0 3.
0
800
600
–2.0 –1.0 0
–100
1.0 2.0 3.0
150
50
V
KA
, CATHODE VOLTAGE (V)
0
–50
Figure 4. Cathode Current versus
Cathode Voltage
Figure 5. Cathode Current versus
Cathode Voltage
Input
100
V
KA
= V
ref
T
A
= 25
° C
I
K
V
KA
I
K
, CATHODE CURRENT (mA)
I
K
, CATHODE CURRENT ( A)
µ
12
5
T
A
, AMBIENT TEMPERATURE ( ° C)
3.0
10050 75–55
0
2.5
0.5
2.0
1.0
250–25
1.5
2600
2580
2560
2540
2520
2500
2480
2460
V
KA
= V
ref
I
K
= 10 mA
T
A
, AMBIENT TEMPERATURE (
° C)
V
KA
I
K
–55
Input
V
ref
75 100 125
2440
050
Figure 6. Reference Input Voltage versus
Ambient Temperature
Figure 7. Reference Input Current versus
Ambient Temperature
2420
2400
25–25
Input
I
K
I
K
= 10 mA
I
ref
10k
V
KA
ref
V , REFERENCE INPUT VOLTAGE (mV)
I
ref
, REFERENCE INPUT CURRENT ( A)
µ
V
ref
Max = 2550 mV
V
ref
Typ = 2495 mV
V
ref
Min = 2440 mV
V
KA
= V
ref
T
A
= 25
° C
Input V
KA
I
K