SMD Type
Adjustable Accurate Reference Source
TL431
SOT-23
2.9
0.4
0.1
0.1
3
IC
Unit: mm
Features
The output voltage can be adjusted to 36V
Low dynamic output impedance, its typical value is 0.2
Trapping current capability is 1 to 100mA
The typical value of the equivalent temperature factor in the
whole temperature scope is 50 ppm/
The effective temperature compensation in the working
0.1
2.4
1.3
0.1
1
0.95
0.1
0.1
2
0.55
0.4
0.1
+0.05
-0.01
1.9
0.1
0.97
0.1
range of full temperature
Low output noise voltage
Fast on-state response
Absolute Maximum Ratings
(Operating temperature range applies unless otherwise specified)
Parameter
Cathode Voltage
Cathode Current Range (Continuous)
Reference Input Current Range
Power Dissipation
Operating Temperature
Storage Temperature Range
Symbol
V
KA
I
KA
I
REF
P
D
T
OPR
T
STG
0
-65
-100
0.05
350
70
+150
Rating
37
+150
+10
Unit
V
mA
mA
mW
Electrical Characteristics (Ta = 25
Parameter
Reference Input Voltage
Deviation of Reference Input Voltage
Over Temperature
(*)
unless otherwise specified)
Symbol
V
REF
V
REF
/
T
Testconditons
V
KA
= V
REF
, I
KA
= 10mA
V
KA
= V
REF
, I
KA
= 10mA
T
min
V
REF
/
I
REF
I
REF
/
I
KA(min)
I
KA(OFF)
Z
KA
T
V
KA
T
a
T
max
V
KA
= 10V
V
KA
= 36V
V
REF
10V
-1.0
-0.5
1.5
0.4
0.45
0.05
0.15
-2.7
-2.0
4
1.2
1.0
1.0
0.5
mV/V
mV/V
A
A
mA
A
Min
2.45
Typ
2.5
4.5
Max
2.55
17
Unit
V
mV
Ratio of Change in Reference Input Voltage
to the Change in Cathode Voltage
Reference Input Current
Deviation of Reference Input Current
Over Full Temperature Range
Minimum Cathode Current for Regulation
Off-state Cathode Current
Dynamic Impedance
* T
MIN
= 0
, T
MAX
= +70
I
KA
= 10mA ,
I
KA
= 10mA ,
I
KA
= 10mA , R
1
= 10K
I
KA
= 10mA , R
1
= 10K
T
A
= Full Temperature
V
KA
= V
REF
V
KA
= 36V, V
REF
= 0
, R
2
=
, R
2
=
V
KA
= V
REF
, I
KA
= 1 to 100mA,
1.0KHz
f
0.38
1.Reference
2.Cathode
3.Anode
0
0.1
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