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CJ7805B-TCN-ATG

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Changjing Linear Voltage Regulators (LDO), TO-220F. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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CJ7805B-TCN-ATG

Changjing · Linear Voltage Regulators (LDO) · TO-220F

CJ7805B-TCN-ATG from Changjing, in a TO-220F. 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 input Input of the device; the recommended input voltage range for CJ7805B is stated as a maximum of 25 V.
2 GND power_in Regulator ground, the common reference terminal for the regulator.
3 OUT power_out Output of the device, with a maximum output current of 1.0 A stated in the absolute maximum ratings.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-220F
Category Power Management
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 VOUT 4.9 5 5.1 V TJ = 25°C, ±2% grade 10
Output voltage over line, load and temperature VOUT 4.8 5 5.2 V IOUT = 5mA to 1A, VIN = 7.5 to 20V, TJ = -40 to 125°C, PD ≤ 15W 10
Line regulation ΔVRLINE 25 50 mV VIN = 7.5 to 20V, IOUT = 500mA 10
Load regulation ΔVRLOAD 20 50 mV VIN = 10V, IOUT = 5mA to 1A 10
Quiescent current IQ 3.2 6 mA VIN = 10V, TJ = -40 to 125°C, IOUT = 0mA 10
Quiescent current change ΔIQ 0.1 0.8 mA VIN = 10V, IOUT = 5mA to 1A 10
Quiescent current change ΔIQ 0.3 0.8 mA VIN = 8 to 25V, IOUT = 500mA 10
Short circuit current ISC 50 mA VIN = 35V, TA = 25°C 10
Output voltage temperature coefficient ΔVOUT / ΔT 0.4 mV/°C 10
Output voltage temperature coefficient ΔVOUT / (VOUT × ΔT) 80 ppm/°C 10
Output noise voltage VN 10 μV / VO f = 10 to 100k Hz, TA = 25°C 10
Ripple rejection RR 70 dB f = 120Hz, VIN = 8 to 18V, IOUT = 500mA 10
Dropout voltage VD 2 V IOUT = 1A 10
Output resistance ROUT 10 mΩ f = 1kHz 10
Peak current IPK 2.2 A VIN = 10V 10
Input voltage range VIN 25 V CJ7805B 8
Operating junction temperature TJ -40 125 °C 8
Maximum input voltage range VIN MAX 36 V All voltages with respect to network ground terminal 8
Maximum output current IOUT MAX 1 A 8
Maximum junction temperature TJ Max 150 °C 8
Storage temperature Tstg -65 150 °C 8
Junction-to-ambient thermal resistance (TO-220F) RΘJA 66.4 °C/W TO-220F; TA = 25°C, typical, PCB in still air 9
Junction-to-case thermal resistance (TO-220F) RΘJC 6.2 °C/W TO-220F 9
Reference maximum power dissipation (TO-220F) PD Ref 1.51 W TO-220F; continuous operation 9

CAD (KiCad official)

  • Symbol: CJ7805B-TCN-ATG
  • Footprint: Package_TO_SOT_THT:TO-220F-3_Vertical
  • 3D model: TO-220F (KiCad packages3D, STEP)

Provenance

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

  • Datasheet: Changjing datasheet (33 pp, sha256 2bf7e0142c58a2c8, retrieved 2026-10-27, 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