TP552C50S5 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 pin. Operating range 2V to 50V (absolute max 60V). Bypass to GND with a 1μF ceramic capacitor close to the pin.
2	GND	power_in	Device ground return. Common reference for VIN, VOUT and EN.
3	EN	input	Enable control input. Drive high (VIH ≥ 2V) to turn the regulator on; drive low (VIL ≤ 0.6V) to shut down (ISD ≈ 0.01μA). Input current typ 10nA at VEN = 36V. Do not leave floating.
4	NC	unconnected	No internal connection. May be left floating or tied to GND for mechanical stability.
5	VOUT	power_out	Regulated 5.0V fixed output (±2% accuracy, up to 200mA). Requires an output capacitor with effective capacitance ≥1μF (ceramic or tantalum) for stability. Absolute max VOUT-to-GND is 14V for the C50 option.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

TP552C50S5
TP552C50S5D4

CAD (KiCad official)

Symbol: TP552C50S5
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
`tp552c50s5.step`	85 KB	You want the bare part, or you mark your own boards.
`tp552c50s5-etched.step`	2.2 MB	You want the part with `TP552C50S5` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 527 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 (9 pp, sha256 b8d3857289e9815b, 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