CJ7809

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  "type": "component",
  "slug": "cj7809",
  "title": "CJ7809",
  "brief": "Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.1",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "cj7809"
  ],
  "component": {
    "mpn": "CJ7809",
    "manufacturer": "Changjing",
    "package": "TO-252-2(DPAK)",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/c53b2c18354b01379c94c0992666ccda.pdf",
    "parts": {
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      "footprint": "cj7809.kicad_mod",
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      "model_3d_plain": "cj7809.glb",
      "model_3d_step": "cj7809-etched.step",
      "model_3d_step_plain": "cj7809.step",
      "lbr": "cj7809.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Unregulated positive input supply. Accepts 11.5 V to 27 V for regulation (absolute max 35 V). Bypass with 0.33 µF close to the pin for stability."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground reference for input and output. On TO-252-2L this pin is fused to the exposed tab/heat slug."
      },
      {
        "number": "3",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated +9 V output (8.65-9.35 V at 25 °C). Delivers up to 1 A continuous, 1.5 A peak. Bypass with 0.1 µF close to the pin for transient response."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
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        "url": "https://datasheet.lcsc.com/datasheet/pdf/c53b2c18354b01379c94c0992666ccda.pdf",
        "pages": 4,
        "sha256": "0d92ef93a2dffde9",
        "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"
    },
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        "role": "plain",
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        "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": "cj7809-etched.step",
        "role": "eda",
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        "units": "mm",
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1be0dac4baa00019eedc70308134c83814a064ee319375f24f1ede04372178d4",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "rows": [
        {
          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 1,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
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  ],
  "discovery_triggers": [
    "cj7809"
  ],
  "discovery_pitch": "CJ7809 (Changjing) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "cj7809.kicad_sym",
    "cj7809.kicad_mod",
    "cj7809.glb",
    "cj7809.step",
    "cj7809-etched.step",
    "cj7809.lbr",
    "docs/hero.png",
    "docs/cj7809-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "pads.json",
    "cj7809-etched.glb"
  ],
  "visibility": "public",
  "updated_at": "2026-09-24T19:09:53.713Z",
  "description": "Changjing Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "org": "adom"
}