TS431 Datasheet, PDF (5/14 Pages) STMicroelectronics – LOW VOLTAGE ADJUSTABLE SHUNT REFERENCE

TS431
Electrical characteristics
Figure 1. Reference voltage vs. temperature Figure 2. Test circuit for Vka = Vref
1.252
1.248
1.244
Vka = Vref
Ik = 100 µA
Input
Output
Ik
1.24
1.236
Vka
1.232
Vref
1.228
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Figure 3. Cathode voltage vs. cathode
current
15
10
Vka = Vref
T = 25°C
5
0
-5
-10
-15
-1
-0.5
0
0.5
1
1.5
Vka Cathode voltage (V)
Figure 4.
1.5
Cathode voltage vs. cathode
current
1
0.5
+125°C
-40°C +25°C
+85°C
0
0
10
20
30
40
50
60
Ika Cathode current (µA)
Figure 5.
100
Reference input current vs.
temperature
Ik = 10mA
80
R1 = 10 KΩ
R2 = + ∞
60
40
20
Figure 6. Static impedance vs. temperature
0.4
0.3
Vka = Vref
Ik = 100µA to 15mA
0.2
0.1
0
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
0
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
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