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lm4040cim3x-2-5

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Texas Instruments LM4040CIM3X 2 5 NOPB Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Contents

README

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LM4040CIM3X-2.5

Texas Instruments LM4040CIM3X 2 5 NOPB · Voltage Reference · SOT-23-3

LM4040CIM3X-2.5 from Texas Instruments LM4040CIM3X 2 5 NOPB, 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 (+) of the shunt voltage reference. Sinks the reverse (shunt) current and holds the output at the 2.5 V reverse-breakdown voltage. Operating reverse-current range is 60 μA to 15 mA; dynamic impedance is typically 0.3 Ω at IR = 1 mA.
2 Anode passive Anode (−) of the shunt voltage reference; normally connected to system ground. Return path for the shunt current sourced through the cathode via the external series resistor.
3 NC unconnected No internal connection. Per the datasheet, this pin must be left floating or connected to pin 2 (Anode); it must not be tied to the cathode or to any other net.

Key specifications

Parameter Value
Manufacturer Texas Instruments LM4040CIM3X 2 5 NOPB
Package SOT-23-3
Category PMIC
Pins 3

Ordering variants

  • LM4040CIM3X-2.5
  • LM4040CIM3X-2.5IZ
  • LM4040CIM3X-2.5IM7

CAD (KiCad official)

  • Symbol: LM4040CIM3X-2.5
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3 (KiCad packages3D, STEP)
  • 3D model files: lm4040cim3x-2-5-etched.step / lm4040cim3x-2-5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lm4040cim3x-2-5.step / lm4040cim3x-2-5.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments LM4040CIM3X 2 5 NOPB datasheet (None pp, sha256 3408d7abb0a21a15, 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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