TPSPX3819M5-L-5-0 from TECH PUBLIC, 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	Input supply voltage. Recommended operating range 2.0 V to 20 V (absolute max 24 V). Bypass to GND with a 1 µF ceramic capacitor close to the pin.
2	GND	power_in	Device ground reference and return for input and output currents.
3	EN	input	Enable control input. VIH ≥ 1.1 V turns the regulator on; VIL ≤ 0.4 V puts the device in shutdown (ISD ≈ 0.01 µA typ). Input current ~10 nA at VEN = 27 V. Do not leave floating; tie high to enable.
4	NC	unconnected	No internal connection. May be left floating or tied to GND for improved thermal/mechanical stability.
5	VOUT	power_out	Regulated 5.0 V output (±2% accuracy). Delivers up to 500 mA with current-limit and thermal-shutdown protection. Requires a 1 µF ceramic or tantalum output capacitor for stability.

Key specifications

Parameter	Value
Manufacturer	TECH PUBLIC
Package	SOT-23-5
Category	PMIC
Pins	5

Ordering variants

Same part, different packaging or reel option.

TPSPX3819M5-L-5-0

CAD (KiCad official)

Symbol: TPSPX3819M5-L-5-0
Footprint: Package_TO_SOT_SMD:SOT-23-5
3D model: SOT-23-5 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`tpspx3819m5-l-5-0.step`	85 KB	You want the bare part, or you mark your own boards.
`tpspx3819m5-l-5-0-etched.step`	2.7 MB	You want the part with `TPSPX3819M5-L-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: 672 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: TECH PUBLIC datasheet (8 pp, sha256 8a742fdef806e594, 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