CJ78L15 from Changjing, in a SOT-89-3. 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 positive voltage output. Nominal 15 V (14.4-15.6 V at 25 degC), up to 100 mA. A 0.1 uF output bypass capacitor is recommended close to the pin for stability and transient response.
2	GND	power_in	Common ground reference for input and output. Quiescent current (typ 4.6 mA) flows out this pin.
3	IN	power_in	Unregulated positive input supply. Absolute maximum 35 V; typical operation 17.5-30 V for 15 V output regulation. A 0.33 uF input bypass capacitor is recommended close to the pin.

Key specifications

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

CAD (KiCad official)

Symbol: CJ78L15
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File	Size	Use it when
`cj78l15.step`	57 KB	You want the bare part, or you mark your own boards.
`cj78l15-etched.step`	1010 KB	You want the part with `CJ78L15` already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 273 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 (2 pp, sha256 fa0b1337abf41288, 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