MCC
Micro Commercial Components
TM
omponents
20736 Marilla Street Chatsworth
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TL431X
0,9:708
•
•
•
Output voltage can be adjusted to 36V
Trapping current capability is 1 to 100 mA
The effective temperature compensation in the working range of full
temperature
Programmable
Precision Shunt
Regulator
0D[LPXP 5DWLQJV # 7
457
$SSOLHV 8QOHVV 2WKHUZLVH 1RWHG
Parameter
Symbol
Input Voltage (Vo=5.8V)
V
1
Operating Junction Temperature
T
OPR
Storage Temperature Range
T
STG
Value
37
0---70
-55---+150
Unit
V
SOT-89
A
B
K
:
:
(OHFWULFDO &KDUDFWHULVWLFV #
°
& 8QOHVV 2WKHUZLVH 6SHFLILHG
Parameter
Reference Input
Voltage
Deviation of reference
input voltage
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
Sym
V
ref
Min
2.44V
0V
Typ
2.49V
5V
4.5mV
Max
2.55V
0V
17mV
Test conditions
V
KA
=V
REF
, I
KA
=10mA
E
C
D
G
F
H
J
æ
V /
æ
T
ref
æ
V /
æ
ref
-1.0
-0.5
-2.7
-2.0
4uA
V
KA
I
ref
1.5uA
æ
I /
æ
T
ref
0.4uA
1.2uA
æ
V =
10V
V
æ
V = I =10mA
36V
10V
I =10mA, R1=10K
R2=
I =10mA, R1=10K
è
R2=
V
KA
=V
REF
, I
KA
=10mA
T
min
Ta T
max
KA
ref
KA
KA
KA
KA
1
2
3
T
A
=full Temperature
I
KA
(min)
0.45m
A
0.05uA
0.15
1.0mA
1. REFERENCE
2. ANODE
3. CATHODE
V
KA
=V
REF
V
KA
=36V, V
REF
=0V
V
KA
=V
REF
, I
KA
=1 to
100mA, f 1.0KHz
I
KA
(OFF)
Z
KA
1.0uA
0.5
è
è
*Note: Bypass Capacitors are recommended for optimum stability and
transient response and should be located as close as possible to
the regulators
www.mccsemi.com
Revision: 2
2003/04/10
TL431X
Fig. 1 – Cathode Current
vs. Cathode Voltage
1000
800
V
Z
= V
REF
T
A
= 25°C
I
Z(MIN)
2.58
2.56
TL431
V
Z
= V
REF
I
Z
= 10mA
MCC
Micro Commercial Components
TM
Fig. 2– Reference Voltage
vs. Temperature
Reference Voltage (V)
Cathode Current (µA)
600
400
200
0
-200
-400
-800
-1.0
-0.5
0.0
0.5
1.0
2.54
2.52
2.50
2.48
2.46
2.44
2.42
V
REF
max
V
REF
typ
V
REF
min
1.5
2.0
2.5
3.0
2.40
-40
-20
0
20
40
60
80
100
120
Cathode Voltage (V)
Temperature (°C)
Fig. 3 – Reference Input Current
vs. Temperature
1.20
1.15
R1=10KΩ
R2=
∞
I
Z
=10mA
0.28
0.24
Fig. 4 – Dynamic Impedance
vs. Temperature
Reference Input Current (µA)
Dynamic Impedance (Ω)
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
-40
-20
0
20
40
60
0.20
0.16
0.12
0.08
0.04
0.00
--40
V
Z
= V
REF
I
Z
= 1mA to 100mA
F
≤
1KH
Z
80
100
120
--20
0
20
40
60
80
100
120
Temperature (°C)
Temperature (°C)
Fig. 5 – Change in Reference Voltage
vs. Cathode Voltage
0
2.5
Fig. 6 – Off-State Cathode Current
vs. Temperature
Off-State Cathode Current (µA)
Change In Reference Voltage (mV)
--2
I
Z
=10mA
T
A
=25°C
2.0
V
Z
=V
REF
V
Z
=30V
1.5
--4
--6
--8
--10
1.0
0.5
--12
0
5
10
15
20
25
30
35
40
0.0
--40
-20
0
20
40
60
80
100
120
Cathode Voltage (V)
Temperature (°C)
www.mccsemi.com
Revision: 2
2003/04/10
