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CJ7905

Public Made by Adom

by adom

Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs cj7905: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
viewers cj7905: viewers · Ray
cj7905-etched.fit.json cj7905: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
cj7905-etched.glb cj7905: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
cj7905-etched.step cj7905: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain STEP) · Ray
cj7905.glb Publish 0.1.0 · Ray
cj7905.kicad_mod Publish 0.1.0 · Ray
cj7905.kicad_sym Publish 0.1.0 · Ray
cj7905.lbr cj7905: factory component page (tier=lcsc) · Ray
cj7905.step Publish 0.1.0 · Ray
package.json Publish 0.1.1 · Ray
page.json Publish 0.1.1 · Ray
README.md cj7905: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

CJ7905

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

CJ7905 from Changjing, in a TO-252-2L. 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 GND power_in Ground / common reference pin. Also thermally and electrically bonded to the exposed tab of the TO-252-2L package.
2 IN power_in Unregulated negative input voltage. Recommended operating range -7 V to -25 V (absolute max -35 V). A 2.2 uF input capacitor (Ci) to GND is recommended for stability.
3 OUT power_out Regulated -5 V output (typ; -4.8 V to -5.2 V at 25 C). Delivers up to 1.5 A peak (typ peak current 2.1 A) with a 1 uF output capacitor (Co) to GND for stability.

Key specifications

Parameter Value
Manufacturer Changjing
Package TO-252-2L
Category PMIC
Pins 3

CAD (KiCad official)

  • Symbol: CJ7905
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: TO-252-2L (KiCad packages3D, STEP)
  • 3D model files: cj7905-etched.step / cj7905-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj7905.step / cj7905.glb are the bare package body.

Provenance

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

  • Datasheet: Changjing datasheet (3 pp, sha256 ee3cb70df3f20dbe, 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