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Shunt Regulator
Rev. A/DX 2007-06-04
LM431L
www.taitroncomponents.com
Page 3 of 13
Block Diagram
Symbols
Absolute Maximum Ratings (Ta=25° C)
(Full operating ambient temperature range applies unless otherwise noted.)
Symbol
Description
LM431L
LM431LA LM431LB
Unit
VKA
Cathode Voltage
16
18
V
IKA
Cathode Current Range (Continuous)
50
-100 ~ +100
mA
IREF
Reference Input Current Range
(Continuous)
3
10
mA
TJ
Operating Junction Temperature
150
° C
TOPR
Operating Temperature Range
-40 ~ 85
-40 ~ 125
° C
TSTG
Storage Temperature Range
-65 ~ 150
° C
Z:TO-92
700
770
N:SOT-23
350
370
N5:SOT-23-5
550
370
PD
Power Dissipation
K: SOT-89
-
770
mW
Z:TO-92
180
150
N:SOT-23
360
330
N5:SOT-23-5
230
250
RthJA
Package Thermal
Impedance
K: SOT-89
-
50
° C/W