TL431 STMicroelectronics, TL431 Datasheet - Page 9

• Manufacturer Part Number: TL431
• Description: Programmable Voltage Reference
• Manufacturer: STMicroelectronics

Specifications of TL431

• Adjustable Output Voltage: 2.5 to 36 V
• Sink Current Capability: 1 to 100 mA
• Typical Output Impedance: 0.22 Ω

TL431, TL432
Figure 12. Reference voltage vs. temperature
Figure 14. Zoom on reference voltage vs.
Figure 16. Off-state cathode current vs.
2.54
2.52
2.50
2.48
2.46
2.44
0.4
0.3
0.2
0.1
0.0
-40
-40
cathode current
temperature
-20
-20
0
0
20
Temperature (
20
Temperature (
40
40
60
60
°
°
C)
C)
V
V
KA
REF
80
80
V
I
K
= 36 V
= 0 V
KA
= 10 mA
= V
100
100
REF
Doc ID 4467 Rev 10
120
120
Figure 13. Reference voltage vs. cathode
Figure 15. Reference current vs. temperature
Figure 17. Ratio of change in V
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
0.0
-40
-40
-20
current
V
-20
KA
vs. temperature
0
0
20
20
Temperature (
Temperature °C
Electrical characteristics
40
40
60
60
°
C)
ref
I
80
K
80
I
R
R2= +
to change in
K
= 10 mA
=10 mA
1
=10k
100
100
∝
Ω
120
120
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