Datasheet TL1431 (STMicroelectronics) - 6

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Electrical characteristics TL1431 3 Electrical characteristics
Tamb = 25 °C (unless otherwise specified).
Table 4. Electrical characteristics for TL1431C, TL1431AC TL1431C TL1431AC Symbol Parameter Unit Min. Typ. Max. Min. Typ. Max.
Reference input voltage - see Figure 6 Vref 2.490 2.500 2.510 2.493 2.500 2.507 V VKA = Vref, Ik = 10 mA Reference input voltage deviation over temperature range (1) - see  Figure 6 Vref 3 20 3 20 mV VKA = Vref, Ik = 10 mA, Tmin  Tamb  Tmax Temperature coefficient of reference Vref -------- input voltage(2) T ±13 ±90 ±13 ±90 ppm/°C VKA = Vref, Ik = 10 mA, Tmin  Tamb  Tmax Ratio of change in reference input Vref -------- voltage to change in cathode to anode Vka voltage (see -2 -1.1 -2 -1.1 mV/V Figure 7) Ik = 10 mA - VKA = 36 V to 3 V Reference input current Iref Ik = 10 mA, R1 = 10 kΩ, R2 =  1.5 2.5 1.5 2.5 µA Tmin  Tamb  Tmax 3 3 Reference input current deviation over temperature range Iref 0.2 1.2 0.2 1.2 µA Ik = 10 mA, R1 = 10 kΩ, R2 =, Tmin   Tamb  Tmax Minimum cathode current for regulation Imin Figure 6 0.5 1 0.5 0.6 mA VKA = Vref Ioff Off-state cathode current (see Figure 8) 180 500 180 500 nA Dynamic impedance (3) ZKA 0.2 0.5 0.2 0.5 Ω VKA = Vref, Ik = 1 to100 mA, f  1 kHz 1. See Reference input voltage deviation overtemperature range in Section 4: Parameter definitions on page 12. 2. See Temperature coefficient of reference input voltage in Section 4: Parameter definitions on page 12. 3. See Dynamic impedance in Section 4: Parameter definitions on page 12. 6/27 DocID5286 Rev 9 Document Outline 1 Schematic diagrams Figure 1. TO-92 pin connections (top view) Figure 2. SO-8 batwing pin connections (top view) Figure 3. SOT23-5L and SOT23-3L pin connections (top view) Figure 4. SOT323-6L pin connections (top view) Figure 5. Block diagram 2 Absolute maximum ratings and operating conditions Table 1. Absolute maximum ratings Table 2. Operating conditions Table 3. Thermal data 3 Electrical characteristics Table 4. Electrical characteristics for TL1431C, TL1431AC Table 5. Electrical characteristics for TL1431I, TL1431AI Table 6. Electrical characteristics for TL1431IY, TL1431AIY Figure 6. Test circuit VKA = VREF Figure 7. Test circuit for VKA > VREF Figure 8. Test circuit for IOFF Figure 9. Test circuit for phase margin and voltage gain Figure 10. Test circuit for response time Figure 11. Reference voltage vs. temperature Figure 12. Reference voltage vs. cathode current Figure 13. Reference voltage vs. cathode current (IK = 0 to 1 mA) Figure 14. Reference current vs. temperature Figure 15. Off-state cathode current vs. temperature Figure 16. Ratio of change in VREF to change in VKA vs. temperature Figure 17. Drift of RKA vs. temperature Figure 18. Maximum operating current vs. temperature Figure 19. Gain and phase vs. frequency Figure 20. Stability behavior with capacitive loads Figure 21. Maximum power dissipation Figure 22. Pulse response for IK = 1 mA 4 Parameter definitions 4.1 Reference input voltage deviation overtemperature range Figure 23. Reference input voltage deviation overtemperature range 4.2 Temperature coefficient of reference input voltage Figure 24. Temperature coefficient of reference input voltage 4.3 Dynamic impedance 5 Package information 5.1 SO-8 package information Figure 25. SO-8 package outline Table 7. SO-8 package mechanical data 5.2 TO-92 Ammopack package information Figure 26. TO-92 Ammopack package outline Table 8. TO-92 Ammopack package mechanical data 5.3 TO-92 (bulk) package information Figure 27. TO-92 bulk package outline Table 9. TO-92 bulk package mechanical data 5.4 SOT23-3L package information Figure 28. SOT23-3L package outline Table 10. SOT23-3L package mechanical data 5.5 SOT23-5L package information Figure 29. SOT23-5L package outline Table 11. SOT23-5L package mechanical data 5.6 SOT323-6L package information Figure 30. SOT323-6L package outline Table 12. SOT323-6L package mechanical data 5.7 SO-8 packing information Figure 31. SO-8 tape and reel outline Table 13. SO-8 tape and reel mechanical data 5.8 SOT23-3L packing information Figure 32. SOT23-3L tape outline (Carsem) 5.9 SOT23-5L packing information Figure 33. SOT23-5L tape outline (Carsem) 5.10 SOT323-6L packing information Figure 34. SOT323-6L tape outline Table 14. SOT323-6L tape mechanical data 6 Ordering information Table 15. Order code 7 Revision history Table 16. Document revision history