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LM4050AIM3X-2.5

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by Ray

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

componentpower management (pmic)lm4050aim3x-2.5
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Symbol & Footprint

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Datasheet

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Contents

README

markdown

LM4050AIM3X-2.5

Texas Instruments · Voltage Reference · SOT-23-3

LM4050AIM3X-2.5 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 K passive Cathode (negative marking on top view; this is the shunt-regulator cathode that sinks the shunt current IQ and sets the regulated reverse breakdown voltage VR = 2.5V). Connect through series resistor RS to Vs; the regulated Vout is taken here.
2 A passive Anode (common pin, typically tied to ground). Return terminal of the shunt reference; carries IQ + IL back to the supply return.
3 NC unconnected No internal connection - this pin is the die-attach pad and forms a parasitic Schottky diode to pin 2 (anode). Must be left floating or tied to pin 2 (anode). TI recommends tying to anode in high-EMI or high-frequency switching-noise environments.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-23-3
Category Power Management (PMIC)
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LM4050AIM3X-2.5
  • LM4050AIM3-2.5
  • LM4050BIM3X-2.5
  • LM4050BIM3-2.5
  • LM4050CIM3X-2.5
  • LM4050CIM3-2.5
  • LM4050AEM3X-2.5
  • LM4050AEM3-2.5
  • LM4050BEM3X-2.5
  • LM4050BEM3-2.5
  • LM4050CEM3X-2.5
  • LM4050CEM3-2.5

CAD (KiCad official)

  • Symbol: LM4050AIM3X-2.5
  • 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 (None pp, sha256 a56eb11c173b31e8, retrieved 2026-08-17, tier: lcsc)
  • 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