BQ29311PWR

{
  "slug": "bq29311pwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Battery Management ICs, TSSOP-24. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "bq29311pwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bq29311pwr.kicad_sym",
    "bq29311pwr.kicad_mod",
    "bq29311pwr.glb",
    "bq29311pwr.step",
    "bq29311pwr.lbr",
    "docs/hero.png",
    "docs/bq29311pwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bq29311pwr-hero.glb",
    "bq29311pwr-hero.overlay.json",
    "bq29311pwr-etched.glb"
  ],
  "component": {
    "mpn": "BQ29311PWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-24",
    "pin_count": 24,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://www.ti.com/lit/ds/symlink/bq29311.pdf",
    "parts": {
      "symbol": "bq29311pwr.kicad_sym",
      "footprint": "bq29311pwr.kicad_mod",
      "model_3d": "bq29311pwr-hero.glb",
      "model_3d_plain": "bq29311pwr-etched.glb",
      "model_3d_step": "bq29311pwr-etched.step",
      "model_3d_step_plain": "bq29311pwr.step",
      "lbr": "bq29311pwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2862866",
      "digikey": "BQ29311PWR-ND",
      "mouser": "595-BQ29311PWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T00:22:53Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "BQ29311PWR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-BQ29311PWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCC",
        "type": "power_in",
        "description": "Diode protected BAT+ terminal and primary power source."
      },
      {
        "number": "2",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery positive terminal sense input for regulator shutdown, with recommended range 0 V to VCC."
      },
      {
        "number": "3",
        "name": "VC1",
        "type": "input",
        "description": "Sense voltage input and balance current input for the most positive cell; connected to VC2 in 3-cell applications."
      },
      {
        "number": "4",
        "name": "VC2",
        "type": "input",
        "description": "Sense voltage input for the second most positive cell, balance current input for that cell, and return balance current for the most positive cell."
      },
      {
        "number": "5",
        "name": "VC3",
        "type": "input",
        "description": "Sense voltage input for the third most positive cell, balance current input for that cell, and return balance current for the second most positive cell."
      },
      {
        "number": "6",
        "name": "VC4",
        "type": "input",
        "description": "Sense voltage input for the least positive cell, balance current input for that cell, and return balance current for the third most positive cell."
      },
      {
        "number": "7",
        "name": "VC5",
        "type": "input",
        "description": "Sense voltage input for the most negative cell and return balance current for the least positive cell."
      },
      {
        "number": "8",
        "name": "SR1",
        "type": "input",
        "description": "Current sense positive terminal when charging, relative to SR2."
      },
      {
        "number": "9",
        "name": "SR2",
        "type": "input",
        "description": "Current sense positive terminal when discharging, relative to SR1."
      },
      {
        "number": "10",
        "name": "CNTL",
        "type": "input",
        "description": "Active low input that enables CHG, DSG and PCHG, with an internal pullup."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground pin and negative pack terminal."
      },
      {
        "number": "12",
        "name": "VCELL",
        "type": "output",
        "description": "Output of the scaled value of the measured cell voltage, with absolute maximum of 7 V."
      },
      {
        "number": "13",
        "name": "GND",
        "type": "power_in",
        "description": "Analog ground pin and negative pack terminal."
      },
      {
        "number": "14",
        "name": "SCLK",
        "type": "bidirectional",
        "description": "Open-drain bidirectional serial interface clock with internal 10-kΩ pullup to VREG."
      },
      {
        "number": "15",
        "name": "SDATA",
        "type": "bidirectional",
        "description": "Open-drain bidirectional serial interface data with internal 10-kΩ pullup to VREG."
      },
      {
        "number": "16",
        "name": "CLKIN",
        "type": "input",
        "description": "Digital input that provides an alternate clock, with internal 100-kΩ pullup to VREG."
      },
      {
        "number": "17",
        "name": "XALERT",
        "type": "output",
        "description": "Open-drain output used to indicate status register changes, with internal 100-kΩ pullup to VREG."
      },
      {
        "number": "18",
        "name": "TOUT",
        "type": "output",
        "description": "Provides thermistor bias current."
      },
      {
        "number": "19",
        "name": "VREG",
        "type": "power_out",
        "description": "Integrated 3.3-V regulator output, requiring an external 1-µF VREG capacitor."
      },
      {
        "number": "20",
        "name": "LEDOUT",
        "type": "output",
        "description": "Provides current to drive the LED capacity display."
      },
      {
        "number": "21",
        "name": "CHG",
        "type": "output",
        "description": "Push-pull output charge FET gate voltage supply."
      },
      {
        "number": "22",
        "name": "PCHG",
        "type": "output",
        "description": "Push-pull output precharge FET gate voltage supply."
      },
      {
        "number": "23",
        "name": "DSG",
        "type": "output",
        "description": "Push-pull output discharge FET gate voltage supply."
      },
      {
        "number": "24",
        "name": "VPACK",
        "type": "power_in",
        "description": "Pack positive terminal and alternate power source."
      }
    ],
    "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: Pin types are not stated in the datasheet; they were inferred from the Terminal Functions descriptio; GND appears on two pins (11 and 13) in the terminal table; both are listed as analog ground and nega; VC1 is shorted to VC2 in 3-cell configurations, per the datasheet. The pinout here is the 4-cell map"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0573,
        "at": "2026-10-31T00:22:37"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/bq29311.pdf",
        "pages": 25,
        "sha256": "e8f9fa6552bc3101",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bq29311pwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "706322f42d9793ebf28d5b80100a68bfa8769998a00b78acadf7af937fc1454f",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq29311pwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          7.8,
          0.97
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "7ab5db8a15afe29ad3ee5031f964e3b32e234590afbeea03dfa8da3171e2471e",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "PW0024A",
      "source_page": 22,
      "D": {
        "nom_mm": 7.8,
        "range_mm": [
          7.7,
          7.9
        ]
      },
      "E1": {
        "nom_mm": 4.4,
        "range_mm": [
          4.3,
          4.5
        ]
      },
      "E": {
        "nom_mm": 6.4,
        "range_mm": [
          6.2,
          6.6
        ]
      },
      "e": {
        "nom_mm": 0.65,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.2,
        "range_mm": [
          null,
          1.2
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "bq29311pwr.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}