BQ25895RTWT

{
  "slug": "bq25895rtwt",
  "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)",
    "bq25895rtwt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "bq25895rtwt.kicad_mod",
    "bq25895rtwt.glb",
    "bq25895rtwt.step",
    "bq25895rtwt.lbr",
    "docs/hero.png",
    "docs/bq25895rtwt-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "bq25895rtwt-hero.glb",
    "bq25895rtwt-hero.overlay.json",
    "bq25895rtwt-etched.glb"
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  "component": {
    "mpn": "BQ25895RTWT",
    "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/bq25895",
    "parts": {
      "symbol": "bq25895rtwt.kicad_sym",
      "footprint": "bq25895rtwt.kicad_mod",
      "model_3d": "bq25895rtwt-hero.glb",
      "model_3d_plain": "bq25895rtwt-etched.glb",
      "model_3d_step": "bq25895rtwt-etched.step",
      "model_3d_step_plain": "bq25895rtwt.step",
      "lbr": "bq25895rtwt.lbr"
    },
    "distributor_links": {
      "lcsc": "C2861263"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T09:15:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBUS",
        "type": "power_in",
        "description": "Charger input voltage (recommended 3.9 V to 14 V, absolute maximum -2 V to 22 V with converter not switching); the internal RBFET connects VBUS to PMID, and a 1-µF ceramic capacitor should be placed from VBUS to PGND as close to the IC as possible."
      },
      {
        "number": "2",
        "name": "D+",
        "type": "bidirectional",
        "description": "Positive line of the USB data pair used for D+/D- host and charging port detection (DCD, BC1.2 primary and secondary detection) and the MaxCharge adjustable high-voltage adapter handshake, with an absolute maximum of -0.3 V to 7 V."
      },
      {
        "number": "3",
        "name": "D–",
        "type": "bidirectional",
        "description": "Negative line of the USB data pair used for D+/D- host and charging port detection (DCD, BC1.2 primary and secondary detection) and the MaxCharge adjustable high-voltage adapter handshake, with an absolute maximum of -0.3 V to 7 V."
      },
      {
        "number": "4",
        "name": "STAT",
        "type": "output",
        "description": "Open-drain charge status output that is LOW during charge in progress, HIGH on charge complete or charge disabled, blinks at 1 Hz on fault, and should be connected to a pull-up rail through 10 kΩ (absolute maximum 20 V, sink current 6 mA)."
      },
      {
        "number": "5",
        "name": "SCL",
        "type": "input",
        "description": "I2C interface clock input that should be connected to the logic rail through a 10-kΩ resistor (absolute maximum -0.3 V to 7 V)."
      },
      {
        "number": "6",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C interface data line that should be connected to the logic rail through a 10-kΩ resistor (absolute maximum -0.3 V to 7 V)."
      },
      {
        "number": "7",
        "name": "INT",
        "type": "output",
        "description": "Open-drain interrupt output that sends an active-low 256-µs pulse to the host to report charger status and faults, and should be pulled up to a logic rail through 10 kΩ (sink current 6 mA maximum)."
      },
      {
        "number": "8",
        "name": "OTG",
        "type": "input",
        "description": "Boost mode enable input; boost mode is activated when OTG_CONFIG = 1, OTG is high, and no input source is detected at VBUS (absolute maximum 7 V)."
      },
      {
        "number": "9",
        "name": "CE",
        "type": "input",
        "description": "Active-low charge enable input; battery charging is enabled when CHG_CONFIG = 1 and CE is low, and CE must be pulled either high or low rather than left floating."
      },
      {
        "number": "10",
        "name": "ILIM",
        "type": "input",
        "description": "Input current limit pin that sets the maximum input current by regulating ILIM at 0.8 V with IINMAX = KILIM/RILIM, can also monitor input current when ILIM is below 0.8 V, and does not support limits below 500 mA (absolute maximum 5 V)."
      },
      {
        "number": "11",
        "name": "TS",
        "type": "input",
        "description": "Temperature qualification input for a negative temperature coefficient thermistor (103AT-2 recommended), biased from REGN through a resistor divider, with charge suspended when TS is out of range (absolute maximum 7 V)."
      },
      {
        "number": "12",
        "name": "QON",
        "type": "input",
        "description": "BATFET enable/reset control input with an internal pull-up; a logic low of tSHIPMODE exits shipping mode, and a logic low of tQON_RST resets SYS when VBUS is not plugged in (absolute maximum 7 V)."
      },
      {
        "number": "13",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery connection to the positive terminal of the battery pack, with the internal BATFET connected between BAT and SYS; a 10-µF capacitor should be placed close to the BAT pin (absolute maximum 6 V with converter not switching)."
      },
      {
        "number": "14",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery connection to the positive terminal of the battery pack, with the internal BATFET connected between BAT and SYS; a 10-µF capacitor should be placed close to the BAT pin (absolute maximum 6 V with converter not switching)."
      },
      {
        "number": "15",
        "name": "SYS",
        "type": "power_out",
        "description": "System connection point where the switch-mode converter keeps SYS above the minimum system voltage (default 3.5 V) when the battery is low; a 20-µF capacitor should be placed close to the SYS pin."
      },
      {
        "number": "16",
        "name": "SYS",
        "type": "power_out",
        "description": "System connection point where the switch-mode converter keeps SYS above the minimum system voltage (default 3.5 V) when the battery is low; a 20-µF capacitor should be placed close to the SYS pin."
      },
      {
        "number": "17",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the high-current converter, connected to the source of the LSFET, with a single-point connection to analog GND near the IC PGND pin recommended."
      },
      {
        "number": "18",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the high-current converter, connected to the source of the LSFET, with a single-point connection to analog GND near the IC PGND pin recommended."
      },
      {
        "number": "19",
        "name": "SW",
        "type": "output",
        "description": "Switching node connecting to the output inductor, with a 0.047-µF bootstrap capacitor connected from SW to BTST (absolute maximum -2 V to 16 V, with -3 V to 16 V peak for 10 ns)."
      },
      {
        "number": "20",
        "name": "SW",
        "type": "output",
        "description": "Switching node connecting to the output inductor, with a 0.047-µF bootstrap capacitor connected from SW to BTST (absolute maximum -2 V to 16 V, with -3 V to 16 V peak for 10 ns)."
      },
      {
        "number": "21",
        "name": "BTST",
        "type": "power_out",
        "description": "Positive supply for the PWM high-side driver, connected to the anode of the bootstrap diode, with a 0.047-µF bootstrap capacitor from SW to BTST (absolute maximum -0.3 V to 20 V)."
      },
      {
        "number": "22",
        "name": "REGN",
        "type": "power_out",
        "description": "PWM low-side driver positive supply output connected to the bootstrap diode cathode, requiring a 4.7-µF (10 V rated) ceramic capacitor to analog GND placed close to the IC, which also biases the TS pin."
      },
      {
        "number": "23",
        "name": "PMID",
        "type": "power_out",
        "description": "Battery boost mode output connected to the RBFET and HSFET drains, requiring at least 8.2 µF to PGND without OTG, or 40 µF for up to 2.4 A and 60 µF for up to 3.1 A output with OTG."
      },
      {
        "number": "24",
        "name": "DSEL",
        "type": "output",
        "description": "Open-drain D+/D- multiplexer selection control, pulled up to a logic rail through 10 kΩ, which is driven low during D+/D- detection and when MaxCharge is detected and floats high for other input source types (absolute maximum 20 V, sink current 6 mA)."
      },
      {
        "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 exposed PowerPAD is listed in the pin table without a pin number, so it is not included in the p; Pin types are mapped to KiCad ERC classes by judgment. The datasheet gives P, AI, AIO and DO/DI code; The datasheet pin table is for the RTW (WQFN) package and the ordering addendum confirms BQ25895RTWT",
          "exposed pad 25 added from the footprint"
        ],
        "pages_sent": 21,
        "cost_usd": 0.1266,
        "at": "2026-10-18T09:14:58"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq25895",
        "pages": 65,
        "sha256": "9e00f1f30064dad8",
        "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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      "footprint": "viewers/footprint.html"
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        "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": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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        "role": "eda",
        "up": "Z",
        "units": "mm",
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        "sha256": "91e36591c4276346c8e3a3a4559146ebf75e83a2ac1b1a939177b0c0bc3f4c80",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}