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
TL1431 Parameter definitions
Doc ID 5286 Rev 5 11/18
4 Parameter definitions
4.1 Reference input voltage deviation over temperature range
Δ
V
ref
is defined as the difference between the maximum and minimum values obtained over
the full temperature range.
Δ
V
ref
= V
ref max.
- V
ref min.
Figure 21. Reference input voltage deviation over temperature range
4.2 Temperature coefficient of reference input voltage
The temperature coefficient is defined as the slopes (positive and negative) of the voltage
versus temperature limits within which the reference is guaranteed.
Figure 22. Temperature coefficient of reference input voltage
4.3 Dynamic impedance
The dynamic impedance is defined as |Z
KA
|
=
T1
T2
Temperature
V
ref max.
V
ref min.
Temperature
25°C
Max
2.5V
min
-n ppm/°C
+n ppm/°C
ΔV
KA
ΔI
K
----------------