BQ76942PFBR

{
  "schema_version": 1,
  "type": "component",
  "slug": "bq76942pfbr",
  "title": "BQ76942PFBR",
  "brief": "Texas Instruments Battery Management, TQFP-48(7x7). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "bq76942pfbr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BQ76942PFBR",
    "manufacturer": "Texas Instruments",
    "package": "TQFP-48(7x7)",
    "pin_count": 48,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq76942",
    "parts": {
      "symbol": "bq76942pfbr.kicad_sym",
      "footprint": "bq76942pfbr.kicad_mod",
      "model_3d": "bq76942pfbr-etched.glb",
      "model_3d_plain": "bq76942pfbr.glb",
      "model_3d_step": "bq76942pfbr-etched.step",
      "model_3d_step_plain": "bq76942pfbr.step",
      "lbr": "bq76942pfbr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2692351"
    },
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "This pin is not connected to silicon."
      },
      {
        "number": "2",
        "name": "VC9",
        "type": "input",
        "description": "Ninth cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC8."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "This pin is not connected to silicon."
      },
      {
        "number": "4",
        "name": "VC8",
        "type": "input",
        "description": "Eighth cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC7."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "This pin is not connected to silicon."
      },
      {
        "number": "6",
        "name": "VC7",
        "type": "input",
        "description": "Seventh cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC6."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "This pin is not connected to silicon."
      },
      {
        "number": "8",
        "name": "VC6",
        "type": "input",
        "description": "Sixth cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC5."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "This pin is not connected to silicon."
      },
      {
        "number": "10",
        "name": "VC5",
        "type": "input",
        "description": "Fifth cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC4."
      },
      {
        "number": "11",
        "name": "NC",
        "type": "unconnected",
        "description": "This pin is not connected to silicon."
      },
      {
        "number": "12",
        "name": "VC4",
        "type": "input",
        "description": "Fourth cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC3."
      },
      {
        "number": "13",
        "name": "VC3",
        "type": "input",
        "description": "Third cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC2."
      },
      {
        "number": "14",
        "name": "VC2",
        "type": "input",
        "description": "Second cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC1."
      },
      {
        "number": "15",
        "name": "VC1",
        "type": "input",
        "description": "First cell sense voltage input, VSS-0.3 to VSS+85 V relative to VC0."
      },
      {
        "number": "16",
        "name": "VC0",
        "type": "input",
        "description": "First cell negative terminal voltage input, VSS-0.3 to VSS+6 V."
      },
      {
        "number": "17",
        "name": "VSS",
        "type": "power_in",
        "description": "Device ground connection."
      },
      {
        "number": "18",
        "name": "SRP",
        "type": "input",
        "description": "Coulomb counter sense resistor top input, VSS-0.3 to VREG18 + 0.3 V during operation."
      },
      {
        "number": "19",
        "name": "NC",
        "type": "unconnected",
        "description": "This pin is not connected to silicon."
      },
      {
        "number": "20",
        "name": "SRN",
        "type": "input",
        "description": "Coulomb counter sense resistor bottom input, VSS-0.3 to VREG18 + 0.3 V during operation."
      },
      {
        "number": "21",
        "name": "TS1",
        "type": "bidirectional",
        "description": "Thermistor or general purpose ADC input, accepting VSS-0.2 to VREG18 + 0.3 V."
      },
      {
        "number": "22",
        "name": "TS2",
        "type": "bidirectional",
        "description": "Thermistor or ADC input and SHUTDOWN mode wakeup pin, accepting VSS-0.2 to VREG18 + 0.3 V, with weak pulldown to VSS in SHUTDOWN."
      },
      {
        "number": "23",
        "name": "TS3",
        "type": "bidirectional",
        "description": "Thermistor or general purpose ADC input, accepting VSS-0.2 to VREG18 + 0.3 V."
      },
      {
        "number": "24",
        "name": "REG18",
        "type": "power_out",
        "description": "Internal 1.8 V LDO output regulated to 1.6 to 2.0 V, providing 3 to 14 mA short-circuit current limit for internal use."
      },
      {
        "number": "25",
        "name": "ALERT",
        "type": "bidirectional",
        "description": "Multifunction pin for alarm interrupt, HDQ interface, thermistor, or digital I/O (VSS-0.3 to VSS+6 V, or VSS-0.2 to VREG18 + 0.3 V for ADC/thermistor)."
      },
      {
        "number": "26",
        "name": "SCL",
        "type": "bidirectional",
        "description": "I2C clock or SPI serial clock with open-drain output, VSS-0.3 to VSS+6 V, supporting 400 kHz I2C mode."
      },
      {
        "number": "27",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C data or SPI MISO with open-drain for I2C or active drive for SPI, VSS-0.3 to VSS+6 V, supporting 400 kHz I2C mode."
      },
      {
        "number": "28",
        "name": "HDQ",
        "type": "bidirectional",
        "description": "Multifunction pin for HDQ single-wire, SPI MOSI, thermistor, or digital I/O (VSS-0.3 to VSS+6 V, or VSS-0.2 to VREG18 + 0.3 V for ADC/thermistor)."
      },
      {
        "number": "29",
        "name": "CFETOFF",
        "type": "bidirectional",
        "description": "Charge FET disable input (low disables CHG/PCHG), SPI chip select, thermistor, or digital I/O (VSS-0.3 to VSS+6 V, or VSS-0.2 to VREG18 + 0.3 V for ADC/thermistor)."
      },
      {
        "number": "30",
        "name": "DFETOFF",
        "type": "bidirectional",
        "description": "Discharge FET disable input (low disables DSG/PDSG or both in BOTHOFF mode), thermistor, or digital I/O (VSS-0.3 to VSS+6 V, or VSS-0.2 to VREG18 + 0.3 V for ADC/thermistor)."
      },
      {
        "number": "31",
        "name": "DCHG",
        "type": "bidirectional",
        "description": "Charge FET fault status open-drain output or thermistor/digital I/O (VSS-0.3 to VSS+6 V, or VSS-0.2 to VREG18 + 0.3 V for ADC/thermistor)."
      },
      {
        "number": "32",
        "name": "DDSG",
        "type": "bidirectional",
        "description": "Discharge FET fault status open-drain output or thermistor/digital I/O (VSS-0.3 to VSS+6 V, or VSS-0.2 to VREG18 + 0.3 V for ADC/thermistor)."
      },
      {
        "number": "33",
        "name": "RST_SHUT",
        "type": "input",
        "description": "Reset or shutdown digital input, VSS-0.3 to VSS+6 V logic level, with >1 second assertion triggering SHUTDOWN mode."
      },
      {
        "number": "34",
        "name": "REG2",
        "type": "power_out",
        "description": "Second programmable LDO output (1.8 V / 2.5 V / 3.0 V / 3.3 V / 5.0 V selectable), providing up to 45 mA with 47 to 80 mA short-circuit current limit."
      },
      {
        "number": "35",
        "name": "REG1",
        "type": "power_out",
        "description": "First programmable LDO output (1.8 V / 2.5 V / 3.0 V / 3.3 V / 5.0 V selectable), providing up to 45 mA with 47 to 80 mA short-circuit current limit."
      },
      {
        "number": "36",
        "name": "REGIN",
        "type": "input",
        "description": "LDO supply input providing ~5.5 V from internal pre-regulator or external source for REG1 and REG2, with voltage range maximum of VSS-0.3 or VBREG-5.5 to minimum of VSS+6 or VBAT+0.3."
      },
      {
        "number": "37",
        "name": "BREG",
        "type": "output",
        "description": "Pre-regulator base drive for external NPN BJT, maximum output current 2.5 to 3.33 mA at short circuit."
      },
      {
        "number": "38",
        "name": "FUSE",
        "type": "bidirectional",
        "description": "Fuse drive output (VSS-0.3 to minimum of VSS+20 or VBAT+0.3 V) and secondary protector sense input (VSS-0.3 to VSS+6 V with maximum 2 mA current limit)."
      },
      {
        "number": "39",
        "name": "PDSG",
        "type": "output",
        "description": "Predischarge PFET gate control output, voltage approximately VBAT to VBAT-0.5 V depending on supply level."
      },
      {
        "number": "40",
        "name": "PCHG",
        "type": "output",
        "description": "Precharge PFET gate control output, voltage approximately VPACK to VPACK-0.5 V depending on supply level."
      },
      {
        "number": "41",
        "name": "LD",
        "type": "bidirectional",
        "description": "Load detect pin for pack removal sensing (VSS-0.3 to VSS+85 V) or current source output in SHUTDOWN mode, with internal pullup current 35 to 172 µA."
      },
      {
        "number": "42",
        "name": "PACK",
        "type": "input",
        "description": "PACK+ voltage sense input measuring top-of-stack after protection FETs, VSS-0.3 to VSS+85 V, with ±0.5 V measurement accuracy after calibration."
      },
      {
        "number": "43",
        "name": "DSG",
        "type": "output",
        "description": "Discharge NFET gate drive output, VSS-0.3 to VSS+85 V range, gate-source voltage 4.5 to 7 V (low overdrive) or 10 to 13 V (high overdrive) relative to BAT."
      },
      {
        "number": "44",
        "name": "NC",
        "type": "unconnected",
        "description": "This pin is not connected to silicon."
      },
      {
        "number": "45",
        "name": "CHG",
        "type": "output",
        "description": "Charge NFET gate drive output, VSS-0.3 to VSS+85 V range, gate-source voltage 4.5 to 7 V (low overdrive) or 10 to 13 V (high overdrive) relative to BAT."
      },
      {
        "number": "46",
        "name": "CP1",
        "type": "bidirectional",
        "description": "Charge pump external capacitor connection (100 to 2200 nF recommended), voltage range VBAT-0.3 to minimum of VSS+85 or VBAT+15 V."
      },
      {
        "number": "47",
        "name": "BAT",
        "type": "power_in",
        "description": "Primary power supply input from battery stack top through series diode, VSS-0.3 to VSS+85 V absolute maximum, typical 4.7 to 55 V operating range."
      },
      {
        "number": "48",
        "name": "VC10",
        "type": "input",
        "description": "Tenth cell top-of-stack sense voltage input, measuring between maximum of VSS-0.3 and VC9-0.3 to VSS+85 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 85,
        "cost_usd": 1.0335,
        "at": "2026-09-23T18:37:37"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq76942",
        "pages": 85,
        "sha256": "a976a88e92abb957",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 48,
        "described": 48,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bq76942pfbr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "14ca7676e4932e92f0eca0c6d56ce3018cd28a2531204a70ab7bbacb3eeb3cf5",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq76942pfbr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          9,
          9,
          1.1
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "e67aae751b4e91fb792a219fa507fc9078a9428f63f6e10c1096f6b860d82236",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TQFP-48(7x7)",
      "Category": "Power Management (PMIC)",
      "Pins": "48"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bq76942pfbr"
  ],
  "discovery_pitch": "BQ76942PFBR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "bq76942pfbr.kicad_sym",
    "bq76942pfbr.kicad_mod",
    "bq76942pfbr.glb",
    "bq76942pfbr.step",
    "bq76942pfbr.lbr",
    "docs/hero.png",
    "docs/bq76942pfbr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:05:56.626Z"
}