BQ24257RGET

{
  "slug": "bq24257rget",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Battery Management, VQFN-24(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "bq24257rget",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "bq24257rget.kicad_sym",
    "bq24257rget.kicad_mod",
    "bq24257rget.glb",
    "bq24257rget.step",
    "bq24257rget.lbr",
    "docs/hero.png",
    "docs/bq24257rget-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bq24257rget-hero.glb",
    "bq24257rget-hero.overlay.json"
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  "component": {
    "mpn": "BQ24257RGET",
    "manufacturer": "Texas Instruments",
    "package": "VQFN-24(4x4)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq24257",
    "parts": {
      "symbol": "bq24257rget.kicad_sym",
      "footprint": "bq24257rget.kicad_mod",
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      "model_3d_plain": "bq24257rget.glb",
      "model_3d_step": "bq24257rget-etched.step",
      "model_3d_step_plain": "bq24257rget.step",
      "lbr": "bq24257rget.lbr"
    },
    "distributor_links": {
      "lcsc": "C3682910",
      "digikey": "296-36452-2-ND",
      "mouser": "595-BQ24257RGET"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T13:27:35Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-36452-2-ND",
        "status": "found",
        "lifecycle": "Not For New Designs"
      },
      "mouser": {
        "pn": "595-BQ24257RGET",
        "status": "found",
        "lifecycle": "Not Recommended for New Designs"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "CE",
        "type": "input",
        "description": "Active-low charge enable input; connecting CE to a high logic level places the battery charger in standby mode."
      },
      {
        "number": "2",
        "name": "D+",
        "type": "input",
        "description": "BC1.2 compatible D+/D- based adapter detection input that detects DCP, SDP and CDP and is connected to the USB port D+ output at power-up."
      },
      {
        "number": "3",
        "name": "D-",
        "type": "input",
        "description": "BC1.2 compatible D+/D- based adapter detection input paired with D+ and connected to the USB port D- output at power-up."
      },
      {
        "number": "4",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground for the QFN package; connect to the thermal pad and the ground plane of the circuit."
      },
      {
        "number": "5",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C interface data line; connect SDA to the logic rail through a 10 kΩ resistor."
      },
      {
        "number": "6",
        "name": "SCL",
        "type": "input",
        "description": "I2C interface clock input; connect SCL to the logic rail through a 10 kΩ resistor."
      },
      {
        "number": "7",
        "name": "STAT",
        "type": "output",
        "description": "Open-drain status output that pulls low during charging, is high impedance when charging is complete or the charger is disabled, and sends a 256 µs fault interrupt pulse; connect through a 10 kΩ resistor or an LED to a logic rail."
      },
      {
        "number": "8",
        "name": "PG",
        "type": "output",
        "description": "Open-drain power-good output (/PG) that is pulled low when a valid supply is connected to IN, where valid means between VBAT+VSLP and VOVP, and is high impedance otherwise."
      },
      {
        "number": "9",
        "name": "TS",
        "type": "input",
        "description": "Battery pack NTC monitor input; connect to the center tap of a resistor divider from LDO to GND with the NTC from TS to GND, providing four thresholds for JEITA or PSE compatibility."
      },
      {
        "number": "10",
        "name": "ISET",
        "type": "input",
        "description": "Charge current programming input; connect a resistor from ISET to GND to program the fast charge current."
      },
      {
        "number": "11",
        "name": "BAT",
        "type": "bidirectional",
        "description": "Battery connection to the positive battery terminal; bypass BAT with at least 20 µF capacitor to GND."
      },
      {
        "number": "12",
        "name": "BAT",
        "type": "bidirectional",
        "description": "Battery connection to the positive battery terminal (second BAT pin); bypass BAT with at least 20 µF capacitor to GND."
      },
      {
        "number": "13",
        "name": "CSIN",
        "type": "input",
        "description": "System voltage sense and SMPS output filter connection; connect to the system output at the output bulk capacitors and bypass locally with at least 1 µF."
      },
      {
        "number": "14",
        "name": "CSIN",
        "type": "input",
        "description": "System voltage sense and SMPS output filter connection (second CSIN pin); connect to the system output at the output bulk capacitors and bypass locally with at least 1 µF."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground terminal; connect to the ground plane of the circuit and, for the QFN package, to the thermal pad of the IC."
      },
      {
        "number": "16",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground terminal (second PGND pin); connect to the ground plane of the circuit and, for the QFN package, to the thermal pad of the IC."
      },
      {
        "number": "17",
        "name": "SW",
        "type": "output",
        "description": "Inductor connection; connect to the switching side of the external inductor."
      },
      {
        "number": "18",
        "name": "SW",
        "type": "output",
        "description": "Inductor connection (second SW pin); connect to the switching side of the external inductor."
      },
      {
        "number": "19",
        "name": "IN",
        "type": "power_in",
        "description": "Input power supply connected to the external DC supply (AC adapter or USB port); bypass IN to PGND with >2 µF ceramic capacitor."
      },
      {
        "number": "20",
        "name": "PMID",
        "type": "passive",
        "description": "Connection between the blocking FET and the high-side FET; connect a 1 µF capacitor from PMID to PGND as close to the PMID and PGND pins as possible."
      },
      {
        "number": "21",
        "name": "BOOT",
        "type": "input",
        "description": "High-side MOSFET gate driver supply; connect a 0.033 µF ceramic capacitor with voltage rating >15 V from BOOT to SW."
      },
      {
        "number": "22",
        "name": "ILIM",
        "type": "input",
        "description": "Input current limit programming input; a resistor to GND sets the limit from 0.5 A to 2 A, with ILIM shorted to GND for a 2 A default, and it has no effect on the USB input."
      },
      {
        "number": "23",
        "name": "VDPM",
        "type": "input",
        "description": "Input DPM programming input; a resistor divider between IN and GND with the center tap on VDPM sets the VIN_DPM threshold with a 1.2 V regulator reference, and shorting to GND gives a default of 4.36 V."
      },
      {
        "number": "24",
        "name": "LDO",
        "type": "power_out",
        "description": "LDO output regulated to 4.9 V that drives up to 50 mA; bypass LDO with a 1 µF ceramic capacitor and it is enabled when VUVLO < VIN < 19 V."
      },
      {
        "number": "25",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 datasheet pin-function table gives RGE pin numbers for the bq24257 variant (ordering BQ24257RGET; The thermal pad of the VQFN package is not given a pin number in the extracted text. It is reference; The QFN-24 top-view drawing was not among the 12 extracted pages. The pin numbers come from the PIN ",
          "exposed pad 25 added from the footprint"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0767,
        "at": "2026-10-11T13:27:20"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq24257",
        "pages": 48,
        "sha256": "ae48135cfffeee87",
        "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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        "sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-10-11",
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      {
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        "sha256": "dfc0d13508d771ab84248694af2f1748db5a6c6373861ebb81b1fe5c33016f27",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  }
}