TPNCP718ASN500T1G 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 2.0V to 24V (absolute max 27V). Bypass with a 1µF ceramic capacitor to GND close to the pin.
2	GND	power_in	Device ground reference for the regulator and internal bandgap. Connect to system ground with a low-impedance path.
3	EN	input	Enable control input. Drive high (VIH ≥ 1.1V) to enable the regulator; drive low (VIL ≤ 0.4V) to shut down (ISD ≈ 0.01µA). EN input current ≈10nA at 27V; tolerant to VIN. Do not leave floating.
4	NC	unconnected	No internal connection. Leave floating or tie to GND for mechanical stability; no electrical function.
5	VOUT	power_out	Regulated output of the LDO. Fixed 5.0V (500 suffix) at up to 300mA continuous, ±2% accuracy, current-limited to 300-500mA. Requires a 1µF ceramic or tantalum output capacitor to GND.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TPNCP718ASN500T1G

CAD (KiCad official)

Symbol: TPNCP718ASN500T1G
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
`tpncp718asn500t1g.step`	85 KB	You want the bare part, or you mark your own boards.
`tpncp718asn500t1g-etched.step`	2.8 MB	You want the part with `TPNCP718ASN500T1G` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 687 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 (6 pp, sha256 d2e7a8d254435ae6, 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