CJ75LC0S from Changjing, in a SOT-89-3L. 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 12 V output (up to 300 mA). Requires an output capacitor between OUT and GND placed close to the pin for stability and best transient response.
2	IN	power_in	Unregulated input supply, 2.5 V to 36 V (absolute max 40 V). Bypass with the recommended input capacitor placed as close as possible to the IN and GND pins to minimize input impedance.
3	GND	power_in	Regulator ground / return reference for both input and output capacitors.

Key specifications

Parameter	Value
Manufacturer	Changjing
Package	SOT-89-3L
Category	PMIC
Pins	3

Ordering variants

Same part, different packaging or reel option.

CJ75LC0S

CAD (KiCad official)

Symbol: CJ75LC0S
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3L (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cj75lc0s.step`	57 KB	You want the bare part, or you mark your own boards.
`cj75lc0s-etched.step`	1.2 MB	You want the part with `CJ75LC0S` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 321 faces against 42 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 (36 pp, sha256 c4e87b13b4aa0863, 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