CM1843AA2

{
  "slug": "cm1843aa2",
  "version": "0.1.0",
  "type": "component",
  "description": "iCM(创芯微) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "cm1843aa2",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "cm1843aa2.kicad_sym",
    "cm1843aa2.kicad_mod",
    "cm1843aa2.glb",
    "cm1843aa2.step",
    "cm1843aa2.lbr",
    "docs/hero.png",
    "docs/cm1843aa2-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "cm1843aa2-hero.glb",
    "cm1843aa2-hero.overlay.json",
    "cm1843aa2-etched.glb"
  ],
  "component": {
    "mpn": "CM1843AA2",
    "manufacturer": "iCM(创芯微)",
    "package": "SOT-89-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603372322905092096",
    "parts": {
      "symbol": "cm1843aa2.kicad_sym",
      "footprint": "cm1843aa2.kicad_mod",
      "model_3d": "cm1843aa2-hero.glb",
      "model_3d_plain": "cm1843aa2-etched.glb",
      "model_3d_step": "cm1843aa2-etched.step",
      "model_3d_step_plain": "cm1843aa2.step",
      "lbr": "cm1843aa2.lbr"
    },
    "distributor_links": {
      "lcsc": "C22446636"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T00:35:13Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin; the regulator's common return, and the datasheet limits VIN-to-GND to -0.3 V to 45 V and VOUT-to-GND to -0.3 V to Vin+7 V."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input, specified for 3 V to 40 V with an absolute maximum of -0.3 V to 45 V to GND, and the datasheet notes VOUT-to-VIN must stay within -50 V to 0.3 V."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated fixed 12 V output, rated for up to 300 mA, with VOUT-to-GND limited to -0.3 V to Vin+7 V and VOUT-to-VIN limited to -50 V to 0.3 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The MPN CM1843AA2 maps to the 'A' (SOT89-3) variant per the product selection table (CM1843XA2, X=A:; The output schema has no field for headline electrical specs, so the spec values (VIN 3–40 V, IGND 2; The datasheet's thermal resistance for SOT89-3 is 180 °C/W, which was not included in the pinout out"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0254,
        "at": "2026-10-18T00:33:06"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603372322905092096",
        "pages": 11,
        "sha256": "6c81b4864a8d9878",
        "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"
    },
    "models_3d": [
      {
        "file": "cm1843aa2.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "844c0bb504d0c383535d9845c6376fe7a4053241a2ede8d8ef694df3fcfc37c8",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "cm1843aa2-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.5,
          1.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.05,
        "footprint_binding": "identity",
        "sha256": "ce93da8d418a053b1c4b61e5056bd3bd94d2d23fb5cfef44c18d51d6cde56fe3",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}