component

LM4050CEM3X-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)lm4050cem3x-2.5
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Datasheet

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Contents

README

markdown

LM4050CEM3X-2.5

Texas Instruments · Voltage Reference · SOT-23-3

LM4050CEM3X-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 CATHODE passive Cathode terminal of the shunt reference. Connect through a series resistor (Rs) from the supply Vs; the regulated 2.5V reverse-breakdown voltage appears here (Vout). Sinks the shunt current (IQ + IL); operating cathode current range 60μA to 15mA.
2 ANODE passive Anode terminal, normally tied to system ground. Serves as the reference return for the 2.5V output measured at the CATHODE pin.
3 NC unconnected No internal connection. Leave floating or tie to pin 2 (ANODE). In high-EMI environments (e.g. near transformers) or with significant high-frequency switching noise, TI recommends tying this pin to the anode.

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.

  • LM4050CEM3X-2.5

The extractor listed these alongside LM4050CEM3X-2.5, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM4050CEM3X-2.5CIM3
  • LM4050CEM3X-2.5CIM3X
  • LM4050CEM3X-2.5AEM3
  • LM4050CEM3X-2.5AEM3X
  • LM4050CEM3X-2.5BEM3
  • LM4050CEM3X-2.5BEM3X
  • LM4050CEM3X-2.5AIM3
  • LM4050CEM3X-2.5AIM3X
  • LM4050CEM3X-2.5BIM3
  • LM4050CEM3X-2.5BIM3X

CAD (KiCad official)

  • Symbol: LM4050CEM3X-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