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
8/18 Doc ID 5286 Rev 5
Figure 4. Test circuit V
KA
= V
REF
Figure 5. Test circuit for V
KA
> V
REF
Input
V
KA
V
REF
I
K
=10mA
Output
R
V
KA
= V
REF
+ R1 x I
REF
1
R1
R2
--------+()
Input
V
KA
V
REF
I
K
R1
R2
I
REF
R
Output
Figure 6. Test circuit for I
OFF
Figure 7. Test circuit for phase margin and
voltage gain
V
KA
=36V
I
OFF
Input
V
REF
I
K
=10mA
Output
10μF
10μF
15kΩ 8.25kΩ
Figure 8. Test circuit for response time Figure 9. Reference voltage vs. temperature
I
K
=1mA
Output
0 mA
1 mA
-40 -20 0 20 40 60 80 100 120
2.486
2.488
2.490
2.492
2.494
2.496
2.498
2.500
I
K
=10 mA
V
KA
=V
REF
=2.5 V
See figure 1
Reference voltage (V)
Temperature (°C)