TL431
Elektronische Bauelemente
3-Terminal
Adjustable Shunt
Regulator
TO-92
E
S1
Description
The TL431 series are three-terminal adjustable regulators
with guaranteed thermal stability over applicable temperature
ranges. The output voltage may be set to any value between
V
REF
(approximately 2.495V) and 36V with two external resistors.
It provides very wide applications, including shunt regulator,
series regulator, switching regulator, voltage reference and others.
L
D
A
SEATING
PLANE
b1
e1
e
b
C
REF.
A
S
1
b
b
1
C
Absolute Maximum Ratings at T
A
=25
o
C
Parameter
Cathode Voltage
Cathode Current Range (Continuous)
Reference Input Current Range
Operating Junction And Storage Temperature Range
Total Power Dissipation
Millimeter
Min.
Max.
4.45
4.7
1.02
-
0.36
0.51
0.36
0.76
0.36
0.51
REF.
D
E
L
e1
e
Millimeter
Min.
Max.
4.44
4.7
3.30
3.81
12.70
-
1.150
1.390
2.42
2.66
Symbol
V
KA
I
KA
I
REF
Tj ,Tstg
P
D
Ratings
37
-100~+150
-0.05~+10
150, -65~+150
625
Unit
V
mA
mA
o
C
mW
Characteristics
Parameter
Cathode Voltage
Cathode Current
Reference Input Voltage
at Ta = 25 :
Symbol
V
KA
I
KA
TL431C
TL431B
TL431A
V
REF
Min
V
REF
1
2.445
2.470
2.483
V
REF
/ T
V
REF
/ V
KA
I
REF
I
REF
/ T
I
KA
(min)
I
KA
(off)
‡
kA
Z
-
-
-
-
-
-
-
-
Typ.
-
-
2.495
2.495
2.495
4.5
-1.0
-0.5
1.5
0.4
0.45
0.05
0.15
Max.
36
100
2.545
2.520
2.507
17
-2.7
-2.0
4
1.2
1.0
1.0
0.5
mV
V
KA
=V
REF
,I
K
=10mA
Tmin Ta Tmax
V
KA
=10V~V
REF
V
KA
=36V~10V
V
V
KA
= V
REF
,I
K
=10mA
Unit
V
mA
Test Conditions
Deviation of reference Input Voltage
Over temperature(note)
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
Note: Tmin= 0 ,Tmax=+70
http://www.SeCoSGmbH.com/
mV/V I
K
=10mA
uA
uA
mA
uA
I
K
=10mA,R1=10K ,R2=
I
K
=10mA,R1=10K ,R2=
T
A=Full Temperature
V
KA
=V
REF
V
KA
=36V,V
REF
=0
V
KA
=V
REF
,I
K
=1 to 100mA,F 1.0KHz
Any changing of specification will not be informed individual
01-Jun-2002 Rev. A
Page 1 of
3