Datasheet
Table Of Contents
- 1 Schematic diagrams
- 2 Absolute maximum ratings and operating conditions
- 3 Electrical characteristics
- Table 3. Electrical characteristics for TL1431C, TL1431AC
- Table 4. Electrical characteristics for TL1431I, TL1431AI
- Table 5. Electrical characteristics for TL1431IY, TL1431AIY
- Figure 4. Test circuit VKA = VREF
- Figure 5. Test circuit for VKA > VREF
- Figure 6. Test circuit for IOFF
- Figure 7. Test circuit for phase margin and voltage gain
- Figure 8. Test circuit for response time
- Figure 9. Reference voltage vs. temperature
- Figure 10. Reference voltage vs. cathode current
- Figure 11. Reference voltage vs. cathode current (IK = 0 to 1 mA)
- Figure 12. Reference current vs. temperature
- Figure 13. Off-state cathode current vs. temperature
- Figure 14. Ratio of change in VREF to change in VKA vs. temperature
- Figure 15. Drift of RKA vs. temperature
- Figure 16. Maximum operating current vs. temperature
- Figure 17. Gain and phase vs. frequency
- Figure 18. Stability behavior with capacitive loads
- Figure 19. Maximum power dissipation
- Figure 20. Pulse response for IK = 1 mA
- 4 Parameter definitions
- 5 Package mechanical data
- Figure 23. SO-8 batwing package mechanical drawing
- Table 6. SO-8 batwing package mechanical data
- Figure 24. TO-92 ammopack and tape and reel package mechanical drawing
- Table 7. TO-92 ammopack and tape and reel package mechanical data
- Figure 25. TO-92 bulk package mechanical drawing
- Table 8. TO-92 bulk package mechanical data
- 6 Ordering information
- 7 Revision history
Electrical characteristics TL1431
10/18 Doc ID 5286 Rev 5
Figure 16. Maximum operating current vs.
temperature
Figure 17. Gain and phase vs. frequency
-40-200 20406080100120
0.40
0.42
0.44
0.46
0.48
0.50
0.52
I
K
=I
MIN
V
KA
=V
REF
See figure 1
I
MIN
(mA)
Temperature (°C)
1 10 100 1000 10000
-40
-20
0
20
40
60
-200
-150
-100
-50
0
50
100
150
200
Gain (dB)
Frequency (kHz)
I
K
=10 mA
See figure 4
Phase
Gain
Phase (°)
Figure 18. Stability behavior with capacitive
loads
Figure 19. Maximum power dissipation
Figure 20. Pulse response for I
K
= 1 mA
1E-10 1E-9 1E-8 1E-7 1E-6 1E-5
0
20
40
60
80
100
Stable
Area
Stable
Area
Instable
Area
V
KA
=24V
V
KA
=12V
V
KA
=5V
V
KA
=V
REF
Cathode current (mA)
Capacitive Load (F)
10 20 30
0
20
40
60
80
100
T
AMB
= +25°C
Safe
Area
SO8
Batwing
TO92
Cathode current (mA)
Cathode voltage (V)
012345
0
2
4
6
T
AMB
=+25°C
See figure 6
Output voltage
Current step: 1 mA
Voltage (V)
Time (µs)