component

SPX3819M5-L-3-0

Public Made by Adom

by adom

MaxLinear Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs spx3819m5-l-3-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
package.json Publish 0.2.0 · Ray 1mo ago
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray 1mo ago
page.json Brief states the pinout check that actually ran (was an unconditional "Datasheet-verified pinout") · Ray 10d ago
README.md spx3819m5-l-3-0: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray 14d ago
spx3819m5-l-3-0-etched.fit.json spx3819m5-l-3-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
spx3819m5-l-3-0-etched.glb spx3819m5-l-3-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
spx3819m5-l-3-0-etched.step spx3819m5-l-3-0: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray 3d ago
spx3819m5-l-3-0.glb Publish 0.1.0 · Ray 1mo ago
spx3819m5-l-3-0.kicad_mod Publish 0.1.0 · Ray 1mo ago
spx3819m5-l-3-0.kicad_sym Publish 0.1.0 · Ray 1mo ago
spx3819m5-l-3-0.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect and oval pad as a SQUARE EAGLE smd; this carries the real pad shape across (0 -> 5 rounded pads) and stops dropping geometry drawn on KiCad User.N layers. Attributes, connects, pads and the pin-1 marker are gated against decreasing and are unchanged. · Ray 1mo ago
spx3819m5-l-3-0.step Publish 0.1.0 · Ray 1mo ago

SPX3819M5-L-3-0

MaxLinear · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-5

SPX3819M5-L-3-0 from MaxLinear, in a SOT-23-5. 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 VIN power_in Supply input. Operating input voltage range 2.5V to 16V (absolute max -20V to +20V). Recommend a 1µF input capacitor for stability.
2 GND power_in Device ground reference.
3 EN input Enable input. CMOS-compatible: logic high (VIH ≥ 2V) enables the regulator; logic low or open (VIL ≤ 0.4V) shuts down the device to near-zero current. Absolute max -20V to +20V. May be tied directly to VIN for always-on operation.
4 BYP passive Internal reference bypass pin (fixed-output version, SPX3819M5-L-3-0 is fixed 3.0V). Connect a 10nF capacitor to ground to reduce output noise to as low as 40µVRMS. May be left unconnected if low noise is not required; note that BYP capacitor size affects start-up time.
5 VOUT power_out Regulated output. Fixed 3.0V ±1% at up to 500mA load. Requires an output capacitor for stability (typ. 1µF ceramic or 2.2µF aluminum electrolytic). Current limit typ. 800mA (max 950mA).

Key specifications

Parameter Value
Manufacturer MaxLinear
Package SOT-23-5
Category PMIC
Pins 5

Ordering variants

Same part, different packaging or reel option.

  • SPX3819M5-L/TR
  • SPX3819M5-L-1-2/TR
  • SPX3819M5-L-1-5/TR
  • SPX3819M5-L-1-8/TR
  • SPX3819M5-L-2-5/TR
  • SPX3819M5-L-3-0/TR
  • SPX3819M5-L-3-3/TR
  • SPX3819M5-L-5-0/TR
  • SPX3819R2-L/TR
  • SPX3819R2-L-1-2/TR
  • SPX3819S-L/TR
  • SPX3819S-L-5-0/TR

CAD (KiCad official)

  • Symbol: SPX3819M5-L-3-0
  • Footprint: Package_TO_SOT_SMD:SOT-23-5
  • 3D model: SOT-23-5 (KiCad packages3D, STEP)
  • 3D model files: spx3819m5-l-3-0-etched.step / spx3819m5-l-3-0-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); spx3819m5-l-3-0.step / spx3819m5-l-3-0.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
spx3819m5-l-3-0.step 85 KB You want the bare part, or you mark your own boards.
spx3819m5-l-3-0-etched.step 2.5 MB You want the part with SPX3819M5-L-3-0 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 618 faces against 102 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: MaxLinear datasheet (13 pp, sha256 43b63129331150a2, retrieved 2026-08-17, tier: lcsc)
  • 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