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LM4040AIM3X-5.0

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by Ray

Texas Instruments LM4040AIM3X 5 0 NOPB Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

markdown

LM4040AIM3X-5.0

Texas Instruments · Voltage Reference · SOT-23-3

LM4040AIM3X-5.0 from Texas Instruments, in a SOT-23-3. 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 (+) terminal. Shunt current input / regulated output voltage node; tie through series resistor R_S to V_DD to produce V_OUT = 5.0 V at this pin.
2 Anode passive Anode (−) terminal, normally grounded. Return path for the shunt current.
3 NC unconnected No connect. Must be left floating or tied to pin 2 (Anode) per datasheet note (1).

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LM4040AIM3X-5.0
  • LM4040AIM3X-5.0LP
  • LM4040AIM3X-5.0Z
  • LM4040AIM3X-5.0DCK

The extractor listed these alongside LM4040AIM3X-5.0, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM4040AIM3X-5.0M7

CAD (KiCad official)

  • Symbol: LM4040AIM3X-5.0
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Texas Instruments datasheet (72 pp, sha256 0881afa42d05c93b, retrieved 2026-08-17, tier: manufacturer)
  • Datasheet language: Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.
  • 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