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LP3872EMPX-3.3

Public Made by Adom

by adom

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.

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LP3872EMPX-3.3

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

LP3872EMPX-3.3 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 Shutdown input; pulled low it puts the device in shutdown (typically 10-nA quiescent current), must be pulled high through a 10-kΩ pullup, with a voltage range of −0.3 V to 7 V.
2 IN power_in Input supply pin, operating range 2.5 V to 7 V (absolute maximum 7.5 V relative to GND).
3 GND power_in Ground pin.
4 OUT power_out Regulated output voltage, ensured 1.5-A DC output current, short-circuit protected, absolute maximum 6 V relative to GND.
5 ERROR output Error flag output that goes low when the output voltage drops 10% below nominal, needs a 10-kΩ pullup and is connected to ground if unused.

Key specifications

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

CAD (KiCad official)

  • Symbol: LP3872EMPX-3.3
  • Footprint: Package_TO_SOT_SMD:SOT-223-5
  • 3D model: SOT-223-5, generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 1.45 mm nominal SOT height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
  • 3D model files: lp3872empx-3-3-etched.step / lp3872empx-3-3-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); lp3872empx-3-3.step / lp3872empx-3-3.glb are the bare package body.

Provenance

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

  • Datasheet: Texas Instruments datasheet (30 pp, sha256 6a8b5890967893c1, retrieved 2026-10-07, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-4-5-20251001 (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