TL431 / TL431A / TL431B
TM
®
Precision programmable References
P
RODUCTION
D
ATA
S
HEET
CHARACTERISTIC CURVES
2.60
2.58
5
WWW .
Microsemi
.C
OM
(V
REF
) Reference Input Voltage - (V)
2.54
2.52
TL431/A
2.50
2.48
2.46
2.44
2.42
2.4
-50
TL431/A
V
REF
= 2495mV
TL431/A
V
REF
= 2440mV
-25
0
25
50
75
100
125
F
O
O
R
DU
N
E
C
W
T
D
E
2
TL431B
3
TL431/A
TL431B
1
P
R
0
-50
-25
0
SI
GN
S
25
50
75
100
2.56
V
REF
= 2550mV
(I
REF
) Reference Input Current - (µA)
V
REF
= V
KA
I
K
= 10mA
4
I
K
= 10mA
R1 =
I
K
= 10mA
125
(T
A
) Ambient Temperature - (°C)
Figure 1 –
Reference Voltage vs. Free-Air Temperature
(T
A
) Ambient Temperature - (°C)
150
125
EC
S
OM
OL
ME
ET
ND
E
ED
(I
K
) Cathode Current - (µA)
Figure 2 –
Reference Current vs. Free-Air Temperature
800
V
KA
= V
REF
T
A
= 25 °C
V
KA
= V
REF
T
A
= 25 °C
600
(I
K
) Cathode Current - (µA)
100
75
50
25
0
-25
-50
-75
-100
-2
-1
400
I
MIN
O
B
R
TL431/A
200
TL431B
0
N
O
T
0
1
23
-200
-1
0
1
23
C
HARTS
C
HARTS
(V
KA
) Cathode Voltage - (V)
Figure 3 –
Cathode Current vs. Cathode Voltage
(V
KA
) Cathode Voltage - (V)
Figure 4 –
Cathode Current vs. Cathode Voltage
Copyright
©
1999
Rev. 1.4, 2006-09-26
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 5
MICROSEMI [ MICROSEMI CORPORATION ]
