MCP73831T-2ACI

{
  "schema_version": 1,
  "type": "component",
  "slug": "mcp73831t-2aci",
  "title": "MCP73831T-2ACI",
  "brief": "Microchip Tech Battery Management, SOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "mcp73831t-2aci"
  ],
  "component": {
    "mpn": "MCP73831T-2ACI",
    "manufacturer": "Microchip Tech",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884548142292992",
    "parts": {
      "symbol": "mcp73831t-2aci.kicad_sym",
      "footprint": "mcp73831t-2aci.kicad_mod",
      "model_3d": "mcp73831t-2aci.glb",
      "model_3d_step": "mcp73831t-2aci.step",
      "lbr": "mcp73831t-2aci.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "STAT",
        "type": "output",
        "description": "Charge status output. On the MCP73831 this is a tri-state output (High, Low, High-Z) capable of sinking up to 25 mA (VOL ≈ 0.4 V at ISINK = 4 mA) and sourcing up to 35 mA (VOH ≥ VDD − 1 V at ISOURCE = 4 mA). Typically used to drive one or two status LEDs or interface to a host MCU."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Device ground / negative supply return. All input and output voltages are referenced to this pin. PROG programming resistor RPROG is returned to VSS."
      },
      {
        "number": "3",
        "name": "VBAT",
        "type": "power_out",
        "description": "Battery charge control output. Drain of the internal P-channel pass MOSFET; delivers the constant charge current and regulated float voltage (factory-set to 4.20 V, 4.35 V, 4.40 V or 4.50 V ±0.75%) to the positive terminal of the single-cell Li-Ion / Li-Polymer pack. A ≥4.7 µF bypass capacitor to VSS is recommended for loop stability."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Battery management input supply. Accepts 3.75 V to 6 V (7 V absolute max). Below the UVLO stop threshold (VSTOP ≈ 3.38 V) the device enters power-down to prevent battery drain. A 4.7 µF bypass capacitor to VSS is recommended."
      },
      {
        "number": "5",
        "name": "PROG",
        "type": "input",
        "description": "Current regulation set / device enable input. A resistor RPROG from PROG to VSS sets the fast-charge current per IREG = 1000 V / RPROG (RPROG = 2 kΩ to 67 kΩ → 15 mA to 500 mA). Allowing PROG to float, or forcing it to a logic high, disables the device and terminates the charge cycle (shutdown current ~25 µA typ)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588884548142292992",
        "pages": 28,
        "sha256": "f2123088a8b39764",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Microchip Tech",
      "Package": "SOT-23-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    }
  },
  "variants": [
    {
      "mpn": "MCP73831T-2ACI/OT",
      "kind": "packaging"
    },
    {
      "mpn": "MCP73831T-2ACI/MC",
      "kind": "packaging"
    }
  ],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "mcp73831t-2aci"
  ],
  "discovery_pitch": "MCP73831T-2ACI (Microchip Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "mcp73831t-2aci.kicad_sym",
    "mcp73831t-2aci.kicad_mod",
    "mcp73831t-2aci.glb",
    "mcp73831t-2aci.step",
    "mcp73831t-2aci.lbr",
    "docs/hero.png",
    "docs/mcp73831t-2aci-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T01:25:56.972Z"
}