CJ75L05S from Changjing, in a SOT-23. 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	OUT	power_out	Regulated output voltage pin. Provides the fixed 5.0 V output for the CJ75L05S variant, capable of sourcing up to 300 mA. A 1 μF output capacitor is required for stability, transient response, and PSRR.
2	IN	power_in	Unregulated input supply pin. Operating input voltage range 2.5 V to 36 V (absolute max 40 V). A 1 μF input capacitor is recommended for stability.
3	GND	power_in	Ground / VSS reference for the regulator. All voltages in the datasheet are referenced to this network ground terminal.

Key specifications

Parameter	Value
Manufacturer	Changjing
Package	SOT-23
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

CJ75L05SS

CAD (KiCad official)

Symbol: CJ75L05S
Footprint: Package_TO_SOT_SMD:SOT-23
3D model: SOT-23 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cj75l05s.step`	59 KB	You want the bare part, or you mark your own boards.
`cj75l05s-etched.step`	1.5 MB	You want the part with `CJ75L05S` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 365 faces against 69 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: Changjing datasheet (7 pp, sha256 ef71892bf7da9961, 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