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CJ78L05C-M3Y-ARG

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Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-23-3L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CJ78L05C-M3Y-ARG

Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23-3L

CJ78L05C-M3Y-ARG from Changjing, in a SOT-23-3L. 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 OUT output Output of the regulator, fixed at 5.0 V for the CJ78L05C, with output current up to 100 mA.
2 IN input Input to the device, with a maximum input voltage of 30 V for the CJ78L05C (VOUT < 10 V).
3 GND power_in Regulator ground; all voltages are referenced to the network ground terminal.

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-23-3L
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
Input voltage VIN 30 V 8
Output voltage (TJ = 25°C, ±3% grade) VOUT 4.85 5 5.15 V TJ = 25°C 8
Output voltage (over line, load and temperature) VOUT 4.75 5 5.25 V VIN = 7 to 20V, IOUT = 1 to 100mA, TJ = -40 to 125°C, PD ≤ 0.75W 8
Output current IOUT 100 mA TJ = 25°C 8
Quiescent current IQ 3 5.5 mA IOUT = 0mA 8
Quiescent current change ΔIQ 1.5 mA VIN = 8 to 20V, TJ = -40 to 125°C 8
Quiescent current change ΔIQ 0.1 mA IOUT = 1 to 40mA, TJ = -40 to 125°C 8
Dropout voltage VDO 1.7 2 V IOUT = 40mA 8
Dropout voltage VDO 1.8 2.3 V IOUT = 100mA 8
Line regulation ΔVLINE 8 150 mV VIN = 7 to 20V 8
Load regulation ΔVLOAD 10 60 mV IOUT = 1 to 100mA 8
Ripple rejection RR 47 62 dB VIN = 8 to 18V, f = 120Hz 8
Output voltage temperature coefficient ΔVOUT / ΔT 0.42 mV/°C IOUT = 5mA 8
Output voltage temperature coefficient ΔVOUT / (VOUT × ΔT) 84 ppm/°C IOUT = 5mA 8
Output noise voltage VN 40 µV f = 10 to 100k Hz 8
Maximum input voltage VIN MAX 36 V 6
Maximum junction temperature TJ Max 150 °C 6
Storage temperature Tstg -65 150 °C 6
Soldering temperature Tsolder 260 °C 10s 6
Input voltage range (CJ78L05C) VIN 30 V 6
Operating junction temperature TJ -40 125 °C 6
Junction-to-ambient thermal resistance (SOT-23-3L) RΘJA 260.7 °C/W 7
Junction-to-case thermal resistance (SOT-23-3L) RΘJC 64.9 °C/W 7
Reference maximum power dissipation for continuous operation (SOT-23-3L) PD Ref 0.38 W 7

CAD (KiCad official)

  • Symbol: CJ78L05C-M3Y-ARG
  • Footprint: Package_TO_SOT_SMD:SOT-23-3
  • 3D model: SOT-23-3L (KiCad packages3D, STEP)
  • 3D model files: cj78l05c-m3y-arg-etched.step / cj78l05c-m3y-arg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj78l05c-m3y-arg.step / cj78l05c-m3y-arg.glb are the bare package body.

Provenance

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

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