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TLV431AQE5TA

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by Ray

Diodes Incorporated Voltage Reference, SOT-25. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpower management (pmic)tlv431aqe5ta
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Contents

README

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TLV431AQE5TA

Diodes Incorporated · Voltage Reference · SOT-25

TLV431AQE5TA from Diodes Incorporated, in a SOT-25. Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 N/C unconnected No internal connection. Leave floating (or ignore) - pin 1 is not electrically bonded to the die in the SOT-25 package.
2 N/C unconnected No functional connection, but internally shorted to pin 5 (ANODE) via the die-attach paddle. Must be left floating or tied to pin 5 (ANODE); never connect to any other net.
3 CATHODE passive Regulated cathode terminal (K). Sinks the shunt current to hold VKA at the programmed voltage; operating range VREF (1.24 V) to 18 V, cathode current 0.1 mA to 15 mA (20 mA absolute max). Dynamic output impedance ≈ 0.25 Ω typ.
4 REF input Reference/feedback input (R). Compared to the internal 1.24 V bandgap; drive from the top of the external R1/R2 divider between CATHODE and ANODE to set VKA = VREF·(1+R1/R2). Input current IREF ≈ 0.15 µA typ (0.5 µA max); allowable input current range −0.05 to 3 mA.
5 ANODE passive Anode terminal (A) - return/ground reference for the shunt regulator. Tie to circuit ground; also acts as the tie-point for the optional pin 2 short mentioned in the layout note.

Key specifications

Parameter Value
Manufacturer Diodes Incorporated
Package SOT-25
Category Power Management (PMIC)
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • TLV431AQE5TA
  • TLV431AQE5TABQE5TA
  • TLV431AQE5TAAQFTA
  • TLV431AQE5TABQFTA
  • TLV431AQE5TATQFTA

CAD (KiCad official)

  • Symbol: TLV431AQE5TA
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-25 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Diodes Incorporated datasheet (14 pp, sha256 f4c428fc40e3ab42, retrieved 2026-08-17, tier: lcsc)
  • Extractor: ds2sf (Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF