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CJ78M15E-TFN-ARG

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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CJ78M15E-TFN-ARG

Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2L

CJ78M15E-TFN-ARG from Changjing, in a TO-252-2L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 IN power_in Input voltage pin; the datasheet gives a maximum input voltage VIN of 35 V, referenced to network ground.
2 GND power_in Ground pin, the common ground connection of the regulator.
3 OUT power_out Output voltage pin; with good heat dissipation the device provides up to 500mA output current.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-252-2L
Category Power Management (PMIC)
Pins 3

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Output voltage, TJ = 25°C, ±2% grade VOUT 14.7 15 15.3 V TJ = 25°C; ±2% grade 11
Output voltage over line and load VOUT 14.25 15 15.75 V VIN = 17.5 to 27V, IOUT = 5 to 350mA 11
Line regulation LNR 12 100 mV VIN = 17.5 to 30V, IOUT = 200mA 11
Line regulation LNR 5 50 mV VIN = 20 to 30V, IOUT = 200mA 11
Load regulation LDR 27 300 mV IOUT = 5 to 500mA 11
Load regulation LDR 11 150 mV IOUT = 5 to 200mA 11
Quiescent current IQ 3.3 6 mA 11
Quiescent current change ΔIQ 0.8 mA VIN = 17.5 to 30V, IOUT = 200mA 11
Quiescent current change ΔIQ 0.5 mA IOUT = 5 to 350mA 11
Maximum input voltage VIN 35 V All voltages with respect to network ground 3
Maximum junction temperature TJ Max 150 °C 3
Storage temperature Tstg -65 150 °C 3
Soldering temperature Tsolder 260 °C 10 s 3
Operating junction temperature TJ -40 125 °C 3
Junction-to-ambient thermal resistance, TO-252-2L RΘJA 80 °C/W TA = 25°C 4
Reference maximum power dissipation for continuous operation, TO-252-2L PD Ref 1.25 W TA = 25°C 4

Materials and finish

As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).

Part Material Colour / plating Datasheet says Page
housing polyester resin. The cover tape is a multilayer film (Hear Activated Adhesive in nature) primarily composed of polyester film, 28

CAD (KiCad official)

  • Symbol: CJ78M15E-TFN-ARG
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2L (KiCad packages3D, STEP)
  • 3D model files: cj78m15e-tfn-arg-etched.step / cj78m15e-tfn-arg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj78m15e-tfn-arg.step / cj78m15e-tfn-arg.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (29 pp, sha256 590bf746101b9297, retrieved 2026-10-18, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF