BQ25892RTWR

{
  "slug": "bq25892rtwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Battery Management, WQFN-24-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "bq25892rtwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bq25892rtwr.kicad_sym",
    "bq25892rtwr.kicad_mod",
    "bq25892rtwr.glb",
    "bq25892rtwr.step",
    "bq25892rtwr.lbr",
    "docs/hero.png",
    "docs/bq25892rtwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "BQ25892RTWR",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-24-EP(4x4)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq25892",
    "parts": {
      "symbol": "bq25892rtwr.kicad_sym",
      "footprint": "bq25892rtwr.kicad_mod",
      "model_3d": "bq25892rtwr-etched.glb",
      "model_3d_plain": "bq25892rtwr.glb",
      "model_3d_step": "bq25892rtwr-etched.step",
      "model_3d_step_plain": "bq25892rtwr.step",
      "lbr": "bq25892rtwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C165480"
    },
    "pins": [
      {
        "number": "1",
        "name": "VBUS",
        "type": "power_in",
        "description": "Charger input voltage accepting 3.9V to 14V input range with internal reverse-blocking MOSFET (RBFET) connected between VBUS and PMID."
      },
      {
        "number": "2",
        "name": "PSEL",
        "type": "input",
        "description": "Power source selection digital input: high indicates USB host source (500mA), low indicates adapter source (3.25A)."
      },
      {
        "number": "3",
        "name": "PG",
        "type": "output",
        "description": "Open drain active low power good indicator pulsing low when VBUS is within operating range above sleep threshold with source current exceeding 30mA."
      },
      {
        "number": "4",
        "name": "STAT",
        "type": "output",
        "description": "Open drain charge status output indicating charging in progress (low), charging complete or disabled (high), or fault condition (blinking at 1Hz)."
      },
      {
        "number": "5",
        "name": "SCL",
        "type": "input",
        "description": "I2C interface clock input requiring 10kΩ pull-up to logic rail for serial communication at 100kHz to 400kHz."
      },
      {
        "number": "6",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C interface bidirectional data line requiring 10kΩ pull-up to logic rail supporting standard and fast mode I2C protocols."
      },
      {
        "number": "7",
        "name": "INT",
        "type": "output",
        "description": "Open-drain interrupt output pulsing low for 256µs to notify host of charger device status changes or fault events."
      },
      {
        "number": "8",
        "name": "OTG",
        "type": "input",
        "description": "Active high digital input enabling boost mode when OTG_CONFIG=1 for USB On-The-Go operation supporting up to 2.4A output current."
      },
      {
        "number": "9",
        "name": "CE",
        "type": "input",
        "description": "Active low digital input enabling battery charging when CHG_CONFIG=1 and CE pin is low for up to 5A fast charge current."
      },
      {
        "number": "10",
        "name": "ILIM",
        "type": "input",
        "description": "Analog current limit input regulating ILIM voltage at 0.8V for maximum input current IINMAX = KILIM/RILIM ranging from 100mA to 3.25A."
      },
      {
        "number": "11",
        "name": "TS",
        "type": "input",
        "description": "Analog temperature sense input accepting negative temperature coefficient thermistor (103AT recommended) for JEITA-compliant charging monitoring 0°C to 60°C."
      },
      {
        "number": "12",
        "name": "QON",
        "type": "input",
        "description": "Digital input with 200kΩ internal pull-up enabling BATFET when low for ≥1.25s to exit shipping mode or ≥12s to trigger full system reset."
      },
      {
        "number": "13",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery positive terminal connection point for single-cell Li-Ion or Li-polymer battery up to 4.608V with integrated BATFET providing 11mΩ on-resistance."
      },
      {
        "number": "14",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery positive terminal connection point for single-cell Li-Ion or Li-polymer battery up to 4.608V with integrated BATFET providing 11mΩ on-resistance."
      },
      {
        "number": "15",
        "name": "SYS",
        "type": "power_out",
        "description": "System power output connection point maintaining minimum system voltage regulation (3.0V to 3.7V above ground) supporting up to 5A continuous output current."
      },
      {
        "number": "16",
        "name": "SYS",
        "type": "power_out",
        "description": "System power output connection point maintaining minimum system voltage regulation (3.0V to 3.7V above ground) supporting up to 5A continuous output current."
      },
      {
        "number": "17",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection for high-current buck converter switching node, internally connected to LSFET source requiring direct ground connection."
      },
      {
        "number": "18",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection for high-current buck converter switching node, internally connected to LSFET source requiring direct ground connection."
      },
      {
        "number": "19",
        "name": "SW",
        "type": "power_in",
        "description": "Switching node output connecting to LC filter inductor, internally connected to HSFET source and LSFET drain with bootstrap capacitor connection to BTST."
      },
      {
        "number": "20",
        "name": "SW",
        "type": "power_in",
        "description": "Switching node output connecting to LC filter inductor, internally connected to HSFET source and LSFET drain with bootstrap capacitor connection to BTST."
      },
      {
        "number": "21",
        "name": "BTST",
        "type": "power_in",
        "description": "Bootstrap supply for high-side MOSFET gate drive connected to bootstrap diode anode requiring 47nF capacitor to SW for proper gate drive operation."
      },
      {
        "number": "22",
        "name": "REGN",
        "type": "power_out",
        "description": "PWM low-side driver supply output and TS pin bias rail regulated at 4.7V to 6.4V with 50mA current limit, requiring 4.7µF output capacitor to ground."
      },
      {
        "number": "23",
        "name": "PMID",
        "type": "output",
        "description": "Intermediate power node output connected to reverse-blocking MOSFET (RBFET) drain and high-side MOSFET (HSFET) drain requiring 1µF capacitor to PGND."
      },
      {
        "number": "24",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin; exposed PowerPAD beneath IC for thermal dissipation requiring solder connection to board ground with vias to ground plane."
      },
      {
        "number": "25",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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": [
          "exposed pad 25 added from the footprint"
        ],
        "pages_sent": 70,
        "cost_usd": 0.7479,
        "at": "2026-09-24T10:14:45"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq25892",
        "pages": 70,
        "sha256": "2e8c133466478bb3",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "bq25892rtwr.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq25892rtwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
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        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "47a10578c26a60911899c6c0acc7dd4c864dedf55e3253d073538de4899e5abe",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}