BQ25619ERTWR

{
  "slug": "bq25619ertwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Battery Management ICs, WQFN-24(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "bq25619ertwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bq25619ertwr.kicad_sym",
    "bq25619ertwr.kicad_mod",
    "bq25619ertwr.glb",
    "bq25619ertwr.step",
    "bq25619ertwr.lbr",
    "docs/hero.png",
    "docs/bq25619ertwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bq25619ertwr-hero.glb",
    "bq25619ertwr-hero.overlay.json",
    "bq25619ertwr-etched.glb"
  ],
  "component": {
    "mpn": "BQ25619ERTWR",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-24(4x4)",
    "pin_count": 25,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq25619e",
    "parts": {
      "symbol": "bq25619ertwr.kicad_sym",
      "footprint": "bq25619ertwr.kicad_mod",
      "model_3d": "bq25619ertwr-hero.glb",
      "model_3d_plain": "bq25619ertwr-etched.glb",
      "model_3d_step": "bq25619ertwr-etched.step",
      "model_3d_step_plain": "bq25619ertwr.step",
      "lbr": "bq25619ertwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2873446",
      "digikey": "296-BQ25619ERTWRTR-ND",
      "mouser": "595-BQ25619ERTWR"
    },
    "distributor_check": {
      "checked_at": "2026-11-07T00:53:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-BQ25619ERTWRTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-BQ25619ERTWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VAC",
        "type": "input",
        "description": "Input voltage sensing pin that must be connected to VBUS; used for input overvoltage (ACOV) detection."
      },
      {
        "number": "2",
        "name": "PSEL",
        "type": "input",
        "description": "Power source selection input: high sets 500mA input current limit, low sets 2.4A, and the host can later program IINDPM through I2C."
      },
      {
        "number": "3",
        "name": "/PG",
        "type": "output",
        "description": "Open-drain active-low power-good indicator, pulled up through 10kΩ; low means a good input source (BQ25619E only)."
      },
      {
        "number": "4",
        "name": "STAT",
        "type": "output",
        "description": "Open-drain charger status output pulled up through 10kΩ: low when charging, high when charge complete or sleep, blinks at 1Hz on charge suspend fault."
      },
      {
        "number": "5",
        "name": "SCL",
        "type": "input",
        "description": "I2C interface clock, connected to the logic rail through a 10kΩ resistor."
      },
      {
        "number": "6",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C interface data, open-drain, connected to the logic rail through a 10kΩ resistor."
      },
      {
        "number": "7",
        "name": "/INT",
        "type": "output",
        "description": "Open-drain interrupt output pulled up to the logic rail through 10kΩ; sends an active-low 256μs pulse to the host to report charger status and faults."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected; leave this pin floating."
      },
      {
        "number": "9",
        "name": "/CE",
        "type": "input",
        "description": "Charge enable input; battery charging is enabled when the pin is driven low."
      },
      {
        "number": "10",
        "name": "BATSNS",
        "type": "bidirectional",
        "description": "Battery voltage sensing pin for charge voltage regulation; connect as close as possible to the battery pack positive terminal to minimize parasitic lead resistance."
      },
      {
        "number": "11",
        "name": "TS",
        "type": "input",
        "description": "Battery temperature qualification voltage input for an NTC thermistor (103AT-2 recommended) with a REGN-TS-GND divider; charging suspends when the voltage is out of range."
      },
      {
        "number": "12",
        "name": "/QON",
        "type": "input",
        "description": "BATFET enable/reset control input with internal 200kΩ pull-up to VBAT and 6.5V internal clamp; low for tSHIPMODE exits ship mode, low for tQON_RST (min 8s) resets the system."
      },
      {
        "number": "13",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery connection to the pack positive terminal, with internal current sense resistor between SYS and BAT; connect a 10µF capacitor close to the pin."
      },
      {
        "number": "14",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery connection to the pack positive terminal, with internal current sense resistor between SYS and BAT; connect a 10µF capacitor close to the pin."
      },
      {
        "number": "15",
        "name": "SYS",
        "type": "power_out",
        "description": "Converter output connection point with internal current sense resistor between SYS and BAT; connect at least 10µF close to the pin."
      },
      {
        "number": "16",
        "name": "SYS",
        "type": "power_out",
        "description": "Converter output connection point with internal current sense resistor between SYS and BAT; connect at least 10µF close to the pin."
      },
      {
        "number": "17",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "19",
        "name": "SW",
        "type": "power_out",
        "description": "Switching node connected to the output inductor, internally the source of the HSFET and drain of the LSFET; a 0.047μF bootstrap capacitor goes between SW and BTST."
      },
      {
        "number": "20",
        "name": "SW",
        "type": "power_out",
        "description": "Switching node connected to the output inductor, internally the source of the HSFET and drain of the LSFET; a 0.047μF bootstrap capacitor goes between SW and BTST."
      },
      {
        "number": "21",
        "name": "BTST",
        "type": "power_in",
        "description": "PWM high-side driver positive supply, internally connected to the bootstrap diode cathode; connect a 0.047μF bootstrap capacitor between SW and BTST."
      },
      {
        "number": "22",
        "name": "REGN",
        "type": "power_out",
        "description": "PWM low-side driver positive supply output, internally connected to the bootstrap diode anode; connect a 4.7µF (10V rated) ceramic capacitor to analog GND close to the IC."
      },
      {
        "number": "23",
        "name": "PMID",
        "type": "passive",
        "description": "Connected to the drain of the reverse blocking MOSFET (RBFET) and the drain of the HSFET; typical capacitance 2x4.7μF + 1nF between PMID and GND."
      },
      {
        "number": "24",
        "name": "VBUS",
        "type": "power_in",
        "description": "Charger input voltage with the internal reverse blocking MOSFET between VBUS and PMID; place a 1μF ceramic capacitor between VBUS and GND as close to the IC as possible."
      },
      {
        "number": "25",
        "name": "PAD",
        "type": "power_in",
        "description": "Thermal pad that is the device ground reference and low thermal impedance path to the PCB; must be connected externally to the ground plane."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-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 shows no pin number for the thermal pad (printed as '—'). I assigned '25' by conventio; The datasheet lists type codes (P, DO, AIO) rather than ERC classes. I mapped BAT, SYS, SW, BTST, RE; Names differ between the figure and the table: the figure labels the ground pins PGND, the table lab"
        ],
        "pages_sent": 38,
        "cost_usd": 0.2565,
        "at": "2026-11-07T00:53:15"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq25619e",
        "pages": 64,
        "sha256": "19f9af0505f17f92",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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        "file": "bq25619ertwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-11-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq25619ertwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1932a43bec7a1e63985fc3434617ae3dbea68c4494f5db839f0af8f5a66fa20e",
        "checked": "2026-11-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}