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CJ7808

Public Made by Adom

by adom

Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-263-2L. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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CJ7808

Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-263-2L

CJ7808 from Changjing, in a TO-263-2L. 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 to the device.
2 GND power_in Regulator ground.
3 OUT power_out Output of the regulator.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-263-2L
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) VOUT 7.76 8 8.24 V TJ = 25°C, VIN = 14V, IOUT = 500mA 11
Output voltage (IOUT = 5mA to 1A, VIN = 10.5 to 23V, TJ = 0°C to 125°C) VOUT 7.6 8 8.4 V IOUT = 5mA to 1A, VIN = 10.5 to 23V, TJ = 0°C to 125°C 11
Line regulation ΔVOUT 6 160 mV VIN = 10.5 to 25V 11
Line regulation ΔVOUT 2 80 mV VIN = 11 to 17V 11
Load regulation ΔVOUT 12 160 mV IOUT = 5mA to 1.5A 11
Load regulation ΔVOUT 4 80 mV IOUT = 250 to 750mA 11
Quiescent current IQ 4.3 8 mA 11
Quiescent current change ΔIQ 0.5 mA IOUT = 5mA to 1A 11
Quiescent current change ΔIQ 1 mA VIN = 10.5 to 25V 11
Ripple rejection RR 55 72 dB f = 120Hz, VIN = 11.5 to 21.5V 11
Peak current IPK 2.2 A 11
Output voltage drift ΔVOUT/ΔT -0.8 mV/°C IOUT = 5mA 11
Output noise voltage VN 52 μV f = 10 to 100k Hz 11
Dropout voltage VD 2 V IOUT = 1A 11
Output resistance ROUT 10 mΩ f = 1kHz 11
Short circuit current ISC 450 mA 11
Operating junction temperature TJ -40 125 °C 7
Maximum input voltage VIN 35 V All voltages with respect to network ground terminal 7
Maximum junction temperature TJ 150 °C 7
Storage temperature Tstg -65 150 °C 7
Soldering temperature Tsolder 260 °C 10 s 7
Junction-to-ambient thermal resistance (TO-263-2L) RΘJA 60.5 °C/W TA = 25°C, soldered on PCB, still air 8
Junction-to-case thermal resistance (TO-263-2L) RΘJC 5 °C/W TO-263-2L 8
Reference maximum power dissipation for continuous operation (TO-263-2L) PD Ref 1.6 W TA = 25°C, soldered on PCB, still air 8

CAD (KiCad official)

  • Symbol: CJ7808
  • Footprint: Package_TO_SOT_SMD:TO-263-2
  • 3D model: TO-263-2L (KiCad packages3D, STEP)
  • 3D model files: cj7808-etched.step / cj7808-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj7808.step / cj7808.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (37 pp, sha256 65479d448781117d, retrieved 2026-10-17, 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