Datasheet TL431 (Nexperia) - 2

Nexperia TL431 family Adjustable precision shunt regulators 3. Applications
• Shunt regulator • Precision current limiter • Precision constant current sink • Isolated feedback loop for Switch Mode Power Supply (SMPS)
4. Quick reference data Table 2. Quick reference data Symbol Parameter Conditions Min Typ Max Unit
VKA cathode-anode voltage Vref - 36 V IK cathode current 1 - 100 mA Vref reference voltage VKA = Vref; IK = 10 mA; • Standard-Grade (2.0 %) Tamb = 25 °C 2440 2495 2550 mV • A-Grade (1.0 %) 2470 2495 2520 mV • B-Grade (0.5 %) 2483 2495 2507 mV
5. Pinning information Table 3. Pinning Pin Symbol Description Simplified outline Graphic symbol SOT23; normal pinning: All types without MFDT ending
1 K cathode 3 REF 2 REF reference A K 3 A anode 006aab355 1 2
SOT23; mirrored pinning: All types with MFDT ending
1 REF reference 3 REF 2 K cathode A K 3 A anode 006aab355 1 2 TL431_FAM All information provided in this document is subject to legal disclaimers. © Nexperia B.V. 2024. Al rights reserved
Product data sheet Rev. 7 — 30 April 2024 2 / 19
Document Outline 1. General description 2. Features and benefits 3. Applications 4. Quick reference data 5. Pinning information 6. Ordering information 7. Marking 8. Functional diagram 9. Limiting values 10. Recommended operating conditions 11. Thermal characteristics 12. Characteristics 13. Application information 14. Test information 15. Package outline 16. Soldering 17. Revision history 18. Legal information Contents