TL431 Datasheet, PDF (1/3 Pages) Motorola, Inc – PROGRAMMABLE PRECISION REFERENCES

Elektronische Bauelemente
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
VREF (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.
TL431
3-Terminal
Adjustable Shunt Regulator
D
TO-92
E
S1
b1
SEATING
PLANE
Absolute Maximum Ratings at TA=25^oC
Parameter
Cathode Voltage
Cathode Current Range (Continuous)
Reference Input Current Range
Operating Junction And Storage Temperature Range
Total Power Dissipation
C
e1 b
e
REF.
A
S1
b
b1
C
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
VKA
IKA
IREF
Tj ,Tstg
PD
Ratings
37
-100~+150
-0.05~+10
150, -65~+150
625
Unit
V
mA
mA
o_C
mW
Characteristics at Ta = 25к
Parameter
Cathode Voltage
Symbol
VKA
Cathode Current
IKA
Reference Input Voltage
TL431C
TL431B
TL431A
Deviation of reference Input Voltage
Over temperature(note)
VREF
VREF/ T
Ratio of Change in Reference Input
Voltage to the Change in Cathode Voltage
VREF/ VKA
Reference Input Current
IREF
Deviation of reference Input Current
Over Full Temperature Range
IREF/ T
Minimum Cathode Current for Regulation
IKA(min)
Off-State Cathode Current
Dynamic Impedance
IKA(off)
̏ʳZkA ̏
Note: Tmin= 0ć,Tmax=+70ć
Min
VREF
1
2.445
2.470
2.483
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
Unit
Test Conditions
V
mA
V VKA= VREF,IK=10mA
VKA=VREF,IK=10mA
mV
TminЉTaЉTmax
mV/V IK=10mA
VKA=10V~VREF
VKA=36V~10V
uA IK=10mA,R1=10K ,R2=
IK=10mA,R1=10K ,R2=
uA
TA=Full Temperature
mA VKA=VREF
uA VKA=36V,VREF=0
VKA=VREF,IK=1 to 100mA,F 1.0KHz
http://www.SeCoSGmbH.com/
01-Jun-2002 Rev. A
Any changing of specification will not be informed individual
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