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LP3961EMPX-2.5

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Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

componentpower management (pmic)lp3961empx-2.5factory-2.0.0extractor-text

Verified LP3961EMPX-2.5

by Ray · last 5 Nov 2026 · 1 record · files match
SymbolFootprint3D modelPins

Verification log 1 record

5 Nov 2026RayPublished by the parts factory: tier mfr, 5 pinsfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: LP3961EMPX-2.5 · SOT-223-5 · 5 pins
  • ✓copper: 5 copper pads, none touching another net
  • ✓datasheet: all 5 pin names found in the 33-page datasheet
  • ✓distributor: lcsc C2862111, digikey 2156-LP3961EMPX-2.5-ND, mouser 926-LP3961EMPX-25
  • ✓family: SOT-223-5
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-q4_me7_l/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • •package_fit (skip): no component.package_dims on the page: the model is unchecked against the datasheet drawing
  • ✓pads: 5 pins = 5 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 5 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ lp3961empx-2-5.kicad_sym✓ lp3961empx-2-5.kicad_mod✓ lp3961empx-2-5.step
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3D Model

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Symbol & Footprint

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Contents

README

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LP3961EMPX-2.5

Texas Instruments · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-5

LP3961EMPX-2.5 from Texas Instruments, in a SOT-223-5. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 SD input SD is the shutdown input and must be pulled high through a 10-kΩ pullup resistor when used, with the shutdown input voltage limited to -0.3 V to VIN + 0.3 V.
2 IN power_in IN is the input supply pin, operating from 2.5 V to 7 V.
3 OUT output OUT is the regulated output voltage pin, rated for a maximum DC operating current of 0.8 A.
4 ERROR output ERROR is an open flag output that goes low when the output voltage drops 10% below nominal and must be pulled high through a 10-kΩ resistor, or connected to ground if unused.
5 GND power_in GND is the ground pin for the regulator.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package SOT-223-5
Category Power Management (PMIC)
Pins 5

CAD (KiCad official)

  • Symbol: LP3961EMPX-2.5
  • Footprint: Package_TO_SOT_SMD:SOT-223-5
  • 3D model: SOT-223-5 (KiCad packages3D, STEP)
  • 3D model files: lp3961empx-2-5-etched.step / lp3961empx-2-5-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3961empx-2-5.step / lp3961empx-2-5.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (33 pp, sha256 84dbca76243c9a35, retrieved 2026-11-05, tier: manufacturer)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF