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TLV431AIDR

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by Ray

Texas Instruments Voltage Reference, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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TLV431AIDR

Texas Instruments · Voltage Reference · SOIC-8

TLV431AIDR from Texas Instruments, in a SOIC-8. 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 CATHODE passive Cathode (K) - shunt current/voltage input terminal. Max VKA = 7V; continuous IK = ±20 mA (recommended 0.1 to 15 mA for regulation). Dynamic impedance ~0.25Ω typical.
2 ANODE passive Anode (A) - common terminal, normally connected to circuit ground. All ANODE pins (2, 3, 6, 7) are internally tied together and should be connected in parallel.
3 ANODE passive Anode (A) - common terminal, normally connected to circuit ground. Internally tied to the other ANODE pins.
4 NC unconnected No internal connection. Leave floating or tie to ANODE.
5 NC unconnected No internal connection. Leave floating or tie to ANODE.
6 ANODE passive Anode (A) - common terminal, normally connected to circuit ground. Internally tied to the other ANODE pins.
7 ANODE passive Anode (A) - common terminal, normally connected to circuit ground. Internally tied to the other ANODE pins.
8 REF input Reference input - threshold sense relative to the common (ANODE). Internal 1.24V bandgap reference; typical Iref = 0.15 µA (max 0.5 µA). Drive from the R1/R2 resistor divider on the cathode to program the regulated output voltage.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOIC-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • TLV431AIDRD
  • TLV431AIDR
  • TLV431AIDRDBVR
  • TLV431AIDRDBVT
  • TLV431AIDRDBZR
  • TLV431AIDRDBZT
  • TLV431AIDRPK
  • TLV431AIDRLP
  • TLV431AIDRLPR

CAD (KiCad official)

  • Symbol: TLV431AIDR
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Texas Instruments datasheet (58 pp, sha256 e08cda55114ed3cc, retrieved 2026-08-17, tier: manufacturer)
  • 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