BQ7790400PWR

{
  "slug": "bq7790400pwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Battery Management ICs, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "bq7790400pwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bq7790400pwr.kicad_sym",
    "bq7790400pwr.kicad_mod",
    "bq7790400pwr.glb",
    "bq7790400pwr.step",
    "bq7790400pwr.lbr",
    "docs/hero.png",
    "docs/bq7790400pwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bq7790400pwr-hero.glb",
    "bq7790400pwr-hero.overlay.json",
    "bq7790400pwr-etched.glb"
  ],
  "component": {
    "mpn": "BQ7790400PWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://www.ti.com/lit/ds/symlink/bq7790400.pdf",
    "parts": {
      "symbol": "bq7790400pwr.kicad_sym",
      "footprint": "bq7790400pwr.kicad_mod",
      "model_3d": "bq7790400pwr-hero.glb",
      "model_3d_plain": "bq7790400pwr-etched.glb",
      "model_3d_step": "bq7790400pwr-etched.step",
      "model_3d_step_plain": "bq7790400pwr.step",
      "lbr": "bq7790400pwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2873158",
      "digikey": "296-50989-2-ND",
      "mouser": "595-BQ7790400PWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T00:58:57Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-50989-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-BQ7790400PWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage pin for the device."
      },
      {
        "number": "2",
        "name": "AVDD",
        "type": "power_out",
        "description": "Analog supply pin that should only be connected to a capacitor."
      },
      {
        "number": "3",
        "name": "VC5",
        "type": "input",
        "description": "Cell voltage sense input; pin 3 must be connected to pin 4 on the BQ77904 device."
      },
      {
        "number": "4",
        "name": "VC4",
        "type": "input",
        "description": "Cell voltage sense input."
      },
      {
        "number": "5",
        "name": "VC3",
        "type": "input",
        "description": "Cell voltage sense input."
      },
      {
        "number": "6",
        "name": "VC2",
        "type": "input",
        "description": "Cell voltage sense input."
      },
      {
        "number": "7",
        "name": "VC1",
        "type": "input",
        "description": "Cell voltage sense input."
      },
      {
        "number": "8",
        "name": "AVSS",
        "type": "power_in",
        "description": "Analog ground."
      },
      {
        "number": "9",
        "name": "SRP",
        "type": "input",
        "description": "Current sense input connecting to the battery side of the sense resistor."
      },
      {
        "number": "10",
        "name": "SRN",
        "type": "input",
        "description": "Current sense input connecting to the PACK- side of the sense resistor."
      },
      {
        "number": "11",
        "name": "DSG",
        "type": "output",
        "description": "DSG FET driver output."
      },
      {
        "number": "12",
        "name": "CHGU",
        "type": "output",
        "description": "CHG FET signal output for the upper device of a stack; it feeds the CHG signal to the CTRC pin of the lower device."
      },
      {
        "number": "13",
        "name": "CHG",
        "type": "output",
        "description": "CHG FET driver output, used on a single device or on the bottom device of a stack configuration."
      },
      {
        "number": "14",
        "name": "LD",
        "type": "input",
        "description": "PACK- load removal detection input."
      },
      {
        "number": "15",
        "name": "TS",
        "type": "input",
        "description": "Thermistor measurement input; connect a 10-kΩ resistor to AVSS if the function is not used."
      },
      {
        "number": "16",
        "name": "VTB",
        "type": "output",
        "description": "Thermistor bias output."
      },
      {
        "number": "17",
        "name": "CCFG",
        "type": "input",
        "description": "Cell in series-configuration input."
      },
      {
        "number": "18",
        "name": "CTRC",
        "type": "input",
        "description": "CHG and DSG override input."
      },
      {
        "number": "19",
        "name": "CTRD",
        "type": "input",
        "description": "CHG and DSG override input."
      },
      {
        "number": "20",
        "name": "DVSS",
        "type": "power_in",
        "description": "Digital ground."
      }
    ],
    "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 pinout is the datasheet's single PW 20-pin TSSOP table, which applies to the BQ77904/BQ77905 fam; The datasheet gives one shared description for VC1 through VC4 and one shared description for CTRC a; AVDD is typed power_out from its 'O' designation in the pin table. The datasheet describes it as an "
        ],
        "pages_sent": 10,
        "cost_usd": 0.0661,
        "at": "2026-10-31T00:58:43"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/bq7790400.pdf",
        "pages": 49,
        "sha256": "d94ef1e3c87b48ab",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bq7790400pwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq7790400pwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "dde89101417d442de71b66b5a1be1651324b96d6684194b304874c119779d3a4",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "PW0020A",
      "source_page": 45,
      "D": {
        "nom_mm": 6.5,
        "range_mm": [
          6.4,
          6.6
        ]
      },
      "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": "bq7790400pwr.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}