TL431LP Datasheet, PDF (2/3 Pages) Micro Commercial Components – Programmable Precision Shunt Regulator

TL431LP
Fig. 1 – Cathode Current
vs. Cathode Voltage
1000
800
VZ = VREF
TA = 25°C
600
400
IZ(MIN)
200
0
-200
-400
-800
-1.0 -0.5 0.0 0.5 1.0 1.5 2.0 2.5 3.0
Cathode Voltage (V)
Fig. 3 – Reference Input Current
vs. Temperature
1.20
1.15
R1=10KΩ
R2= ∞
1.10
IZ=10mA
1.05
1.00
0.95
0.90
0.85
0.80
0.75
0.70
-40 -20
0 20 40 60 80 100 120
Temperature (°C)
Fig. 5 – Change in Reference Voltage
vs. Cathode Voltage
0
--2
IZ=10mA
--4
TA=25°C
--6
--8
--10
--12
0
5 10 15 20 25 30 35 40
Cathode Voltage (V)
MCC
TM
Micro Commercial Components
Fig. 2 – Reference Voltage
vs. Temperature
2.58
2.56
2.54
2.52
TL431
VZ = VREF
IZ = 10mA
VREF max
2.50
VREF typ
2.48
2.46
2.44
VREF min
2.42
2.40
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Fig. 4 – Dynamic Impedance
vs. Temperature
0.28
0.24
0.20
VZ = VREF
IZ = 1mA to 100mA
F ≤ 1KHZ
0.16
0.12
0.08
0.04
0.00
--40 --20
0 20 40 60 80 100 120
Temperature (°C)
Fig. 6 – Off-State Cathode Current
vs. Temperature
2.5
2.0
VZ=VREF
VZ=30V
1.5
1.0
0.5
0.0
--40 -20
0 20 40 60 80 100 120
Temperature (°C)
Revision: 3
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2010/12/11