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TL431

nexperia
Part Number TL431
Manufacturer nexperia
Description Adjustable precision shunt regulators
Published Jul 20, 2019
Detailed Description TL431 family Adjustable precision shunt regulators Rev. 6 — 9 January 2019 Product data sheet 1. Product profile 1.1....
Datasheet PDF File TL431 PDF File

TL431
TL431

Overview
TL431 family Adjustable precision shunt regulators Rev.
6 — 9 January 2019 Product data sheet 1.
Product profile 1.
1.
General description Three-terminal shunt regulator family with an output voltage range between Vref = 2.
495 V and 36 V, to be set by two external resistors.
Table 1.
Product overview Reference voltage Temperature range (Tamb) tolerance (Vref) 0 °C to 70 °C -40 °C to 85 °C 2.
0 % TL431CDBZR TL431IDBZR 1.
0 % TL431ACDBZR TL431AIDBZR 0.
5 % TL431BCDBZR TL431BIDBZR -40 °C to 125 °C TL431QDBZR TL431FDT TL431MFDT TL431AQDBZR TL431AFDT TL431AMFDT TL431BQDBZR TL431BFDT TL431BMFDT Pinning configuration (see Table 5) normal pinning normal pinning mirrored pinning normal pinning normal pinning mirrored pinning normal pinning normal pinning mirrored pinning 1.
2.
Features and benefits • Programmable output voltage up to 36 V • Three different reference voltage tolerances: • • Standard grade: 2 % • A-Grade: 1 % • B-Grade: 0.
5 % • Typical temperature drift: 9 mV (in a range of 0 °C up to 70 °C) • Low output noise • Typical output impedance: 0.
2 Ω • Sink current capability: 1 mA to 100 mA • AEC-Q100 qualified (grade 1) Nexperia TL431 family Adjustable precision shunt regulators 1.
3.
Applications • Shunt regulator • Precision current limiter • Precision constant current sink • Isolated feedback loop for Switch Mode Power Supply (SMPS) 1.
4.
Quick reference data Table 2.
Quick reference data Symbol Parameter Conditions VKA cathode-anode voltage IK cathode current Vref reference voltage VKA = Vref; IK = 10 mA; • Standard-Grade (2.
0 %) Tamb = 25 °C • A-Grade (1.
0 %) • B-Grade (0.
5 %) Min Typ Max Unit Vref - 36 V 1- 100 mA 2440 2495 2550 mV 2470 2495 2520 mV 2483 2495 2507 mV 2.
Pinning information Table 3.
Pinning Pin Symbol Description Simplified outline SOT23; normal pinning: All types without MFDT ending 1K cathode 3 2 REF reference 3A anode Graphic symbol REF A K 006aab355 1 SOT23; mirrored pinning: All types wit...


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