CJ7912

{
  "schema_version": 1,
  "type": "component",
  "slug": "cj7912",
  "title": "CJ7912",
  "brief": "Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2L. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "cj7912"
  ],
  "component": {
    "mpn": "CJ7912",
    "manufacturer": "Changjing",
    "package": "TO-252-2L",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/5810ea88dfed4ec5bc25a0175d01e6c0.pdf",
    "parts": {
      "symbol": "cj7912.kicad_sym",
      "footprint": "cj7912.kicad_mod",
      "model_3d": "cj7912-etched.glb",
      "model_3d_plain": "cj7912.glb",
      "model_3d_step": "cj7912-etched.step",
      "model_3d_step_plain": "cj7912.step",
      "lbr": "cj7912.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground reference. On the TO-252-2L package pin 1 is also the tab/DAP (D-Pak) heatsink connection."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Negative unregulated input supply. Operating range -14.5 V to -30 V (absolute maximum -35 V). Requires a 2.2 µF input capacitor (Ci) to ground for stability."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated -12 V negative output. Delivers up to 1.5 A peak (2.1 A typical current-limit). Requires a 1 µF output capacitor (Co) to ground for transient response and stability."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/5810ea88dfed4ec5bc25a0175d01e6c0.pdf",
        "pages": 3,
        "sha256": "7a1b26ae9a6e522f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -5.04,
        -2.28
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "TO-252-2@sha256:18c28e5e147d5e9b",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "cj7912.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3eb4c99603a4fe837c2fe9308bc174769ded87a785a0df48d2dc441432ee8b4c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cj7912-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9.9,
          6.5,
          2.32
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "16e0d33e5b08ee48128d56dac19827cbd5dc7563f7f881fbb8c2f6ee91913f4e",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Changjing",
      "Package": "TO-252-2L",
      "Category": "PMIC",
      "Pins": "3"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "cj7912"
  ],
  "discovery_pitch": "CJ7912 (Changjing) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cj7912.kicad_sym",
    "cj7912.kicad_mod",
    "cj7912.glb",
    "cj7912.step",
    "cj7912-etched.step",
    "cj7912.lbr",
    "docs/hero.png",
    "docs/cj7912-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T19:11:38.460Z"
}