MCP73831T-3ACI

{
  "slug": "mcp73831t-3aci",
  "version": "0.1.0",
  "type": "component",
  "description": "Microchip Tech Battery Management ICs, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "mcp73831t-3aci",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "mcp73831t-3aci.kicad_sym",
    "mcp73831t-3aci.kicad_mod",
    "mcp73831t-3aci.glb",
    "mcp73831t-3aci.step",
    "mcp73831t-3aci.lbr",
    "docs/hero.png",
    "docs/mcp73831t-3aci-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "mcp73831t-3aci-hero.glb",
    "mcp73831t-3aci-hero.overlay.json",
    "mcp73831t-3aci-etched.glb"
  ],
  "component": {
    "mpn": "MCP73831T-3ACI",
    "manufacturer": "Microchip Tech",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://ww1.microchip.com/downloads/aemDocuments/documents/APID/ProductDocuments/DataSheets/MCP73831-Family-Data-Sheet-DS20001984H.pdf",
    "parts": {
      "symbol": "mcp73831t-3aci.kicad_sym",
      "footprint": "mcp73831t-3aci.kicad_mod",
      "model_3d": "mcp73831t-3aci-hero.glb",
      "model_3d_plain": "mcp73831t-3aci-etched.glb",
      "model_3d_step": "mcp73831t-3aci-etched.step",
      "model_3d_step_plain": "mcp73831t-3aci.step",
      "lbr": "mcp73831t-3aci.lbr"
    },
    "distributor_links": {
      "lcsc": "C625598"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T21:38:08Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 791 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "STAT",
        "type": "output",
        "description": "Charge status output for connection to an LED or a pull-up resistor to a host microcontroller; tri-state logic output on the MCP73831."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Battery management 0V reference; connect to negative terminal of battery and input supply."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_out",
        "description": "Battery charge control output connected to the positive battery terminal (drain of internal P-channel MOSFET pass transistor); bypass to VSS with a minimum of 4.7 µF."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Battery management input supply; recommended [VREG (typical) + 0.3V] to 6V, bypass to VSS with a minimum of 4.7 µF."
      },
      {
        "number": "5",
        "name": "PROG",
        "type": "input",
        "description": "Current regulation set: a resistor from PROG to VSS scales preconditioning, fast charge and termination currents, and floating the pin disables the charge controller."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The table text on page 11 is garbled in extraction (\"14 VDD\", \"62 VSS\", \"8 5 PROG\"). SOT-23-5 pin nu; The package diagram on page 1 shows the SOT-23-5 pinout as STAT=1, VSS=2, VBAT=3, VDD=4, PROG=5, whi"
        ],
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        "cost_usd": 0.0913,
        "at": "2026-10-23T21:37:11"
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        "pages": 29,
        "sha256": "75297f2a52355993",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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      "footprint": "viewers/footprint.html"
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        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
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        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "sha256": "5876b1876b832538b9bf3e41a2ca97212cb0bb3c74cdd438a7fa32d86801b826",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}