PRODUCT DATABOOK 1996/1997
TL431/TL431A/TL431B
P
RECISION
P
ROGRAMMABLE
R
EFERENCES
P
R O D U C T I O N
D
A T A
S
H E E T
CHARACTERISTIC CURVES
FIGURE 1.
— REFERENCE VOLTAGE
vs. FREE-AIR TEMPERATURE
2.60
FIGURE 2.
— REFERENCE CURRENT
vs. FREE-AIR TEMPERATURE
5
(V
REF
) Reference Input Voltage - (V)
2.56
2.54
2.52
V
REF
= 2550mV
(I
REF
) Reference Input Current - (µA)
2.58
V
REF
= V
KA
I
K
= 10mA
TL431/A
4
I
K
= 10mA
R1 =
¥
I
K
= 10mA
TL431B
2.50
2.48
2.46
2.44
2.42
2.4
-50
3
TL431/A
2
TL431/A
V
REF
= 2495mV
TL431/A
V
REF
= 2440mV
1
TL431B
-25
0
25
50
75
100
125
0
-50
-25
0
25
50
75
100
125
(T
A
) Ambient Temperature - (°C)
(T
A
) Ambient Temperature - (°C)
FIGURE 3.
— CATHODE CURRENT vs. CATHODE VOLTAGE
150
125
FIGURE 4.
— CATHODE CURRENT vs. CATHODE VOLTAGE
800
V
KA
= V
REF
T
A
= 25°C
V
KA
= V
REF
T
A
= 25°C
(I
K
) Cathode Current - (µA)
75
50
25
0
-25
-50
-75
-100
-2
-1
0
1
2
3
(I
K
) Cathode Current - (µA)
100
600
400
I
MIN
TL431/A
TL431B
200
0
-200
-1
0
1
2
3
(V
KA
) Cathode Voltage - (V)
(V
KA
) Cathode Voltage - (V)
Copyright © 1999
Rev. 1.3 9/99
5
MICROSEMI [ MICROSEMI CORPORATION ]
