CJ78L05C-P3T-ARG 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 5.0V output of the regulator. Typical accuracy is ±3% at TJ = 25°C (4.85V to 5.15V) and ±5% over the full temperature range. Delivers up to 100mA; a 0.1µF output capacitor is recommended for stability.
2	GND	power_in	Regulator ground reference. All output and input voltages are measured with respect to this terminal.
3	IN	power_in	Unregulated input supply to the regulator. Recommended input voltage range for the 5.0V variant is up to 30V (absolute max 36V). A 0.33µF input capacitor is recommended when the device is far from the power-supply filter.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

CJ78L05C-P3T-ARG
CJ78L05C-P3T-BRG
CJ78L05C-P3T-ARGM3Y-ARG
CJ78L05C-P3T-ARGM3Y-BRG
CJ78L05C-P3T-ARGTAB-AAG
CJ78L05C-P3T-ARGTAB-ABG
CJ78L05C-P3T-ARGTAB-BAG
CJ78L05C-P3T-ARGTAB-BBG

CAD (KiCad official)

Symbol: CJ78L05C-P3T-ARG
Footprint: Package_TO_SOT_SMD:SOT-89-3
3D model: SOT-89-3L (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

Datasheet: Changjing datasheet (31 pp, sha256 796e71efc59e8ce7, 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