component

CJ6109A33GW

Public Made by Adom

by adom

Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs cj6109a33gw: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
viewers cj6109a33gw: footprint pads join the pin-hover bus with the symbol (4 pads) · Ray
cj6109a33gw-etched.fit.json cj6109a33gw: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
cj6109a33gw-etched.glb cj6109a33gw: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
cj6109a33gw-etched.step cj6109a33gw: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain ST… · Ray
cj6109a33gw.glb Publish 0.1.0 · Ray
cj6109a33gw.kicad_mod courtyard follows the body and pads (63.36 -> 55.31 mm2, 12 vertices) · Ray
cj6109a33gw.kicad_sym Publish 0.1.0 · Ray
cj6109a33gw.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
cj6109a33gw.step Publish 0.1.0 · Ray
package.json Publish 0.2.3 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json Publish 0.2.3 · Ray
README.md cj6109a33gw: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

CJ6109A33GW

Changjing · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

CJ6109A33GW from Changjing, in a SOT-223. 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 VSS power_in Device ground / negative supply return. All internal references and the output feedback divider are referenced to this pin.
2 VOUT power_out Regulated 3.3 V output pin. Delivers up to 1.0 A (typ, 1.3 A max). Requires a ≥4.7 µF ceramic output capacitor to ground for stability. The SOT-223 tab is typically internally connected to this pin.
3 VIN power_in Unregulated positive supply input. Operating range 1.6 V to 6.0 V (absolute max VSS+7 V). Requires a ≥4.7 µF ceramic input capacitor to ground close to the pin. For 3.3 V output, VIN should be ≥ VOUT + dropout (≈320 mV @ 1 A).

Key specifications

Parameter Value
Manufacturer Changjing
Package SOT-223
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • CJ6109A33GW
  • CJ6109A33GWP
  • CJ6109A33GWPL
  • CJ6109A33GWM
  • CJ6109A33GWFB

CAD (KiCad official)

  • Symbol: CJ6109A33GW
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: cj6109a33gw-etched.step / cj6109a33gw-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); cj6109a33gw.step / cj6109a33gw.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
cj6109a33gw.step 64 KB You want the bare part, or you mark your own boards.
cj6109a33gw-etched.step 2.3 MB You want the part with CJ6109A33GW already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 549 faces against 75 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

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

  • Datasheet: Changjing datasheet (10 pp, sha256 75ae8c6e825a8cea, 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