BQ7721603PWR

{
  "slug": "bq7721603pwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Battery Management ICs, TSSOP-24(4.4x7.8). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "bq7721603pwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "bq7721603pwr.kicad_sym",
    "bq7721603pwr.kicad_mod",
    "bq7721603pwr.glb",
    "bq7721603pwr.step",
    "bq7721603pwr.lbr",
    "docs/hero.png",
    "docs/bq7721603pwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bq7721603pwr-hero.glb",
    "bq7721603pwr-hero.overlay.json",
    "bq7721603pwr-etched.glb"
  ],
  "component": {
    "mpn": "BQ7721603PWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-24(4.4x7.8)",
    "pin_count": 24,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://www.ti.com/lit/ds/symlink/bq7721603.pdf",
    "parts": {
      "symbol": "bq7721603pwr.kicad_sym",
      "footprint": "bq7721603pwr.kicad_mod",
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      "model_3d_plain": "bq7721603pwr-etched.glb",
      "model_3d_step": "bq7721603pwr-etched.step",
      "model_3d_step_plain": "bq7721603pwr.step",
      "lbr": "bq7721603pwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C5219172",
      "digikey": "296-BQ7721603PWRTR-ND",
      "mouser": "595-BQ7721603PWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T09:46:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-BQ7721603PWRTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-BQ7721603PWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "Not electrically connected and can be left floating."
      },
      {
        "number": "2",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply; VDD equals the top-of-stack voltage, with a recommended supply range of 5 V to 75 V."
      },
      {
        "number": "3",
        "name": "V16",
        "type": "input",
        "description": "Sense input for the positive voltage of the sixteenth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "4",
        "name": "V15",
        "type": "input",
        "description": "Sense input for the positive voltage of the fifteenth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "5",
        "name": "V14",
        "type": "input",
        "description": "Sense input for the positive voltage of the fourteenth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "6",
        "name": "V13",
        "type": "input",
        "description": "Sense input for the positive voltage of the thirteenth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "7",
        "name": "V12",
        "type": "input",
        "description": "Sense input for the positive voltage of the twelfth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "8",
        "name": "V11",
        "type": "input",
        "description": "Sense input for the positive voltage of the eleventh cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "9",
        "name": "V10",
        "type": "input",
        "description": "Sense input for the positive voltage of the tenth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "10",
        "name": "V9",
        "type": "input",
        "description": "Sense input for the positive voltage of the ninth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "11",
        "name": "V8",
        "type": "input",
        "description": "Sense input for the positive voltage of the eighth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "12",
        "name": "V7",
        "type": "input",
        "description": "Sense input for the positive voltage of the seventh cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "13",
        "name": "V6",
        "type": "input",
        "description": "Sense input for the positive voltage of the sixth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "14",
        "name": "V5",
        "type": "input",
        "description": "Sense input for the positive voltage of the fifth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "15",
        "name": "NC",
        "type": "unconnected",
        "description": "Not electrically connected and can be left floating."
      },
      {
        "number": "16",
        "name": "NC",
        "type": "unconnected",
        "description": "Not electrically connected and can be left floating."
      },
      {
        "number": "17",
        "name": "V4",
        "type": "input",
        "description": "Sense input for the positive voltage of the fourth cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "18",
        "name": "V3",
        "type": "input",
        "description": "Sense input for the positive voltage of the third cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "19",
        "name": "V2",
        "type": "input",
        "description": "Sense input for the positive voltage of the second cell from the bottom of the stack; the Vn - Vn-1 input voltage range is 0 V to 5 V."
      },
      {
        "number": "20",
        "name": "V1",
        "type": "input",
        "description": "Sense input for the positive voltage of the lowest cell in the stack; the V1 - VSS input voltage range is 0 V to 5 V."
      },
      {
        "number": "21",
        "name": "VSS",
        "type": "power_in",
        "description": "Electrically connected to IC ground and to the negative terminal of the lowest cell in the stack."
      },
      {
        "number": "22",
        "name": "COUT",
        "type": "output",
        "description": "Output drive for overvoltage, open wire, and overtemperature; it can be left floating if not used."
      },
      {
        "number": "23",
        "name": "DOUT",
        "type": "output",
        "description": "Output drive for undervoltage, open wire, and overtemperature; it can be left floating if not used."
      },
      {
        "number": "24",
        "name": "TS",
        "type": "input",
        "description": "Temperature sensor input with a 0 V to 1.5 V input voltage range; leave it NC if not used."
      }
    ],
    "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 pin table on page 4 is the BQ77216 family 24-lead pin table. It is not printed specifically for ; Pins 1, 15 and 16 are NC (unconnected) in the datasheet pin table. Pin 24 (TS) is listed as NC when "
        ],
        "pages_sent": 9,
        "cost_usd": 0.0607,
        "at": "2026-10-29T09:46:30"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/bq7721603.pdf",
        "pages": 26,
        "sha256": "00317454776b7c6a",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 24,
        "described": 24,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "file": "bq7721603pwr.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": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq7721603pwr-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": "08c33e044377caff52fd45316f11cb83e7b4e24f455d7f47b2bf8f77400cf4c8",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "PW0024A",
      "source_page": 23,
      "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": "bq7721603pwr.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}