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LM2940IMP-5.0

Public Unreviewed

by Ray

HGSEMI LM2940IMP 5 0 TR Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-3L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Symbol & Footprint

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Contents

README

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LM2940IMP-5.0

HGSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223-3L

LM2940IMP-5.0 from HGSEMI, in a SOT-223-3L. 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 IN power_in Unregulated input supply. Operating range 6-26V (absolute max 45V). Requires a bypass capacitor (typ. 47µF) to ground close to the pin.
2 GND power_in Ground return. On SOT-223 the tab is electrically connected to GND and should be soldered to a copper area for thermal dissipation.
3 OUT power_out Regulated 5.0V LDO output, up to 1A. Requires a minimum 22µF output capacitor for stability. Internally current-limited (~1.9A typ short-circuit) and thermally protected.

Key specifications

Parameter Value
Manufacturer HGSEMI
Package SOT-223-3L
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • LM2940IMP-5.0/TR
  • LM2940IMP-5.0CMP-5.0/TR
  • LM2940IMP-5.0IT-5.0
  • LM2940IMP-5.0CT-5.0
  • LM2940IMP-5.0IS-5.0/TR
  • LM2940IMP-5.0CS-5.0/TR
  • LM2940IMP-5.0MDT-5.0/TR

The extractor listed these alongside LM2940IMP-5.0, but they are different parts with different electrical characteristics. Do not order them as substitutes.

  • LM2940IMP-5.0DQ4-5.0/TR

CAD (KiCad official)

  • Symbol: LM2940IMP-5.0
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223-3L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
lm2940imp-5-0.step 64 KB You want the bare part, or you mark your own boards.
lm2940imp-5-0-etched.step 2.0 MB You want the part with LM2940IMP-5.0 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 513 faces against 75 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: HGSEMI datasheet (11 pp, sha256 06df9640720139f8, 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