BQ24259RGER

{
  "schema_version": 1,
  "type": "component",
  "slug": "bq24259rger",
  "title": "BQ24259RGER",
  "brief": "Texas Instruments Battery Management, VQFN-24-EP(4x4). 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)",
    "bq24259rger",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BQ24259RGER",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-24-EP(4x4)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq24259",
    "parts": {
      "symbol": "bq24259rger.kicad_sym",
      "footprint": "bq24259rger.kicad_mod",
      "model_3d": "bq24259rger-etched.glb",
      "model_3d_plain": "bq24259rger.glb",
      "model_3d_step": "bq24259rger-etched.step",
      "model_3d_step_plain": "bq24259rger.step",
      "lbr": "bq24259rger.lbr"
    },
    "distributor_links": {
      "lcsc": "C473366"
    },
    "pins": [
      {
        "number": "1",
        "name": "VBUS",
        "type": "power_in",
        "description": "Charger input voltage; internal n-channel reverse-blocking MOSFET (RBFET) is connected between VBUS and PMID with VBUS on source."
      },
      {
        "number": "2",
        "name": "PSEL",
        "type": "input",
        "description": "Power source selection input; HIGH indicates USB host source, LOW indicates adapter source."
      },
      {
        "number": "3",
        "name": "PG",
        "type": "output",
        "description": "Open-drain active-low power-good indicator; LOW indicates good input source when voltage is between UVLO and ACOV, above SLEEP threshold, and current limit is above 30 mA."
      },
      {
        "number": "4",
        "name": "STAT",
        "type": "output",
        "description": "Open-drain charge status output; LOW indicates charge in progress, HIGH indicates charge complete or disabled, blinking at 1 Hz during fault."
      },
      {
        "number": "5",
        "name": "SCL",
        "type": "input",
        "description": "I2C interface clock input; connect to logic rail through 10-kΩ resistor."
      },
      {
        "number": "6",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C interface data bidirectional line; connect to logic rail through 10-kΩ resistor."
      },
      {
        "number": "7",
        "name": "INT",
        "type": "output",
        "description": "Open-drain interrupt output; sends 256-µs active-low pulse to host to report charger device status and fault."
      },
      {
        "number": "8",
        "name": "OTG",
        "type": "input",
        "description": "Digital USB current limit selection pin during buck mode and active-high enable pin during boost mode; in buck mode with PSEL=High, OTG=High sets IIN to 500 mA, OTG=Low sets to 100 mA."
      },
      {
        "number": "9",
        "name": "CE",
        "type": "input",
        "description": "Active-low Charge Enable pin; battery charging is enabled when REG01[5:4] = 01 and CE pin is Low."
      },
      {
        "number": "10",
        "name": "ILIM",
        "type": "input",
        "description": "Input current limit setting pin; sets maximum input current limit by regulating ILIM voltage at 1 V with external resistor from ILIM to ground."
      },
      {
        "number": "11",
        "name": "TS",
        "type": "input",
        "description": "Analog temperature qualification voltage input; connect negative temperature coefficient thermistor to monitor battery temperature; charge suspends when out of range."
      },
      {
        "number": "12",
        "name": "QON",
        "type": "input",
        "description": "BATFET enable control in shipping mode; logic low-to-high transition with minimum 2 ms high level turns on BATFET to exit shipping mode."
      },
      {
        "number": "13",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery connection point to positive pin of battery pack; internal BATFET is connected between BAT and SYS."
      },
      {
        "number": "14",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery connection point to positive pin of battery pack; internal BATFET is connected between BAT and SYS."
      },
      {
        "number": "15",
        "name": "SYS",
        "type": "power_in",
        "description": "System connection point; internal BATFET is connected between BAT and SYS; switch-mode converter maintains SYS above minimum system voltage setting when battery drops below threshold."
      },
      {
        "number": "16",
        "name": "SYS",
        "type": "power_in",
        "description": "System connection point; internal BATFET is connected between BAT and SYS; switch-mode converter maintains SYS above minimum system voltage setting when battery drops below threshold."
      },
      {
        "number": "17",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection for high-current power converter node; internally connected to source of n-channel LSFET; connect directly to ground of input and output capacitors."
      },
      {
        "number": "18",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground connection for high-current power converter node; internally connected to source of n-channel LSFET; connect directly to ground of input and output capacitors."
      },
      {
        "number": "19",
        "name": "SW",
        "type": "output",
        "description": "Switching node connecting to output inductor; internally connected to source of n-channel HSFET and drain of n-channel LSFET."
      },
      {
        "number": "20",
        "name": "SW",
        "type": "output",
        "description": "Switching node connecting to output inductor; internally connected to source of n-channel HSFET and drain of n-channel LSFET."
      },
      {
        "number": "21",
        "name": "BTST",
        "type": "power_out",
        "description": "PWM high-side driver positive supply output; internally connected to anode of bootstrap diode; connect 0.047-µF bootstrap capacitor from SW to BTST."
      },
      {
        "number": "22",
        "name": "REGN",
        "type": "power_out",
        "description": "PWM low-side driver positive supply output; internally connected to cathode of bootstrap diode; serves as bias rail for TS pin."
      },
      {
        "number": "23",
        "name": "PMID",
        "type": "output",
        "description": "Connected to drain of reverse-blocking MOSFET and drain of high-side MOSFET; requires 8.2 µF or more capacitance from PMID to PGND."
      },
      {
        "number": "24",
        "name": "VBUS",
        "type": "power_in",
        "description": "Charger input voltage; internal n-channel reverse-blocking MOSFET (RBFET) is connected between VBUS and PMID with VBUS on source."
      },
      {
        "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": [
          "extractor flagged: Thermal Pad (Exposed Pad) is not explicitly numbered in the datasheet; assigned identifier 'EP' per ",
          "exposed pad 25 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 49,
        "cost_usd": 0.6352,
        "at": "2026-09-22T23:41:58"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq24259",
        "pages": 49,
        "sha256": "32cbff192784f69a",
        "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": "bq24259rger.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": "bq24259rger-etched.step",
        "role": "eda",
        "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": "f3657c5372f8ac0153eb8476f5b485f65e1582f162a9fe179ff0e0b80e10ad16",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VQFN-24-EP(4x4)",
      "Category": "Power Management (PMIC)",
      "Pins": "25"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "bq24259rger"
  ],
  "discovery_pitch": "BQ24259RGER (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bq24259rger.kicad_sym",
    "bq24259rger.kicad_mod",
    "bq24259rger.glb",
    "bq24259rger.step",
    "bq24259rger.lbr",
    "docs/hero.png",
    "docs/bq24259rger-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T18:02:05.807Z"
}