Electrical Characteristics
Figure 15. Drfit of R
KA
vs. temp.
0.00
TL1431
Figure 16. Maximum operating current vs. temp.
0.52
0.50
0.48
I
MIN
(mA)
0.46
0.44
-0.01
∆
R
KA
(
Ω
)
I
K
=10 mA
V
KA
=V
REF
= 2.5V
see figure 1
-0.02
I
K
=I
MIN
V
KA
=V
REF
See figure 1
-0.03
0.42
-0.04
-40
-20
0
20
40
60
80
100
120
0.40
-40
-20
0
20
40
60
80
100
120
Temperature (°C)
Temperature (°C)
Figure 17. Gain & phase vs. frequency
Figure 18. Stability behaviour with capacitive
loads
200
60
Gain
40
I
K
=10 mA
See figure 4
100
Cathode current (mA)
150
100
V
KA
=V
REF
80
Stable
Area
Gain (dB)
20
Phase
50
Phase (
°
)
V
KA
=5V
60
Stable
Area
Instable
Area
0
0
-50
-100
-20
-150
-40
1
10
100
Frequency (kHz)
1000
-200
10000
V
KA
=12V
V
KA
=24V
40
20
0
1E-10
1E-9
1E-8
1E-7
1E-6
1E-5
Capacitive Load (F)
Figure 19. Maximum power dissipation
Figure 20. Pulse response for I
K
= 1mA
6
100
T
AMB
= +25
°
C
Cathode current (mA)
Current step: 1 mA
80
SO8
Batwing
60
TO92
40
Safe
Area
Voltage (V)
4
T
AMB
=+25°C
See figure 6
Output voltage
2
20
0
10
20
Cathode voltage (V)
30
0
0
1
2
Time (µs)
3
4
5
8/13
STMICROELECTRONICS [ STMICROELECTRONICS ]
