BQ24381DSGT

{
  "schema_version": 1,
  "type": "component",
  "slug": "bq24381dsgt",
  "title": "BQ24381DSGT",
  "brief": "Texas Instruments Battery Management ICs, WSON-8-EP(2x2). 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 supply chip",
    "bq24381dsgt",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "BQ24381DSGT",
    "manufacturer": "Texas Instruments",
    "package": "WSON-8-EP(2x2)",
    "pin_count": 9,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq24381",
    "parts": {
      "symbol": "bq24381dsgt.kicad_sym",
      "footprint": "bq24381dsgt.kicad_mod",
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      "lbr": "bq24381dsgt.lbr"
    },
    "distributor_links": {
      "lcsc": "C2868148",
      "digikey": "296-BQ24381DSGTTR-ND",
      "mouser": "595-BQ24381DSGT"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T11:29:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-BQ24381DSGTTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-BQ24381DSGT",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Input power connected to the external DC supply (absolute max 30 V); bypass IN to VSS with a ceramic capacitor of 1 μF minimum."
      },
      {
        "number": "2",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground terminal; connect to the thermal pad and to the ground rail of the circuit, and it must be connected to ground at all times."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "Do not connect to any external circuits; these pins may have internal connections used for test purposes."
      },
      {
        "number": "4",
        "name": "FAULT",
        "type": "output",
        "description": "Open-drain status output pulled to VSS internally when the pass FET is off due to input overvoltage, output short circuit, overtemperature or battery voltage outside safe limits, and high impedance during normal operation."
      },
      {
        "number": "5",
        "name": "CE",
        "type": "input",
        "description": "Active-low chip enable input with an internal pull-down of approximately 200 kΩ; CE high turns the pass FET off and CE low turns it on."
      },
      {
        "number": "6",
        "name": "VBAT",
        "type": "power_in",
        "description": "Battery voltage sense input connected to the pack positive terminal through a 100-kΩ resistor."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "Do not connect to any external circuits; these pins may have internal connections used for test purposes."
      },
      {
        "number": "8",
        "name": "OUT",
        "type": "power_out",
        "description": "Output terminal to the charging system; bypass OUT to VSS with a ceramic capacitor of 1 μF minimum."
      },
      {
        "number": "9",
        "name": "PAD",
        "type": "passive",
        "description": "Exposed thermal pad internally connected to VSS; it must be connected to the same potential as VSS on the PCB and not used as the primary ground input."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "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 datasheet does not number the exposed thermal pad. The number '9' and the name 'PAD' are my assu; The datasheet pin table gives no I/O type for VSS. I classed it as power_in (GND) per the rules.; The BQ24381DSGT part is in the DSG WSON-8 package, which matches the pinout on page 3. The pinout is"
        ],
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        "cost_usd": 0.0798,
        "at": "2026-10-23T11:29:16"
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      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq24381",
        "pages": 25,
        "sha256": "68b98db1e60807c1",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
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        "sha256": "7672cac8d88d8679800ef3bf90954e7996ea74e8ddb1f157f2d82bca6b2015e4",
        "checked": "2026-10-23",
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    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "WSON-8-EP(2x2)",
      "Category": "Power Supply Chip",
      "Pins": "9"
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        {
          "name": "OUT voltage",
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        {
          "name": "FAULT, CE, VBAT voltage",
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        {
          "name": "Junction temperature",
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          "min": -40,
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          "name": "Storage temperature",
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          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
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        {
          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
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          "name": "Junction-to-board thermal resistance",
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        {
          "name": "Junction-to-top characterization parameter",
          "symbol": "ψJT",
          "kind": "thermal",
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          "name": "Junction-to-board characterization parameter",
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          "kind": "thermal",
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          "name": "Junction-to-case (bottom) thermal resistance",
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          "kind": "thermal",
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        {
          "name": "UVLO input power detected threshold",
          "symbol": "UVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
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          "conditions": "CE = LO or HI, VIN: 0 V → 3 V",
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          "symbol": "Vhys(UVLO)",
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          "unit": "mV",
          "min": 200,
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          "conditions": "CE = LO or HI, VIN: 3 V → 0 V",
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          "name": "Operating current",
          "symbol": "IDD",
          "kind": "electrical",
          "unit": "μA",
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          "conditions": "CE = LO, no load on OUT pin, VIN = 5 V, bq24381",
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        {
          "name": "Standby current",
          "symbol": "ISTDBY",
          "kind": "electrical",
          "unit": "μA",
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          "max": 100,
          "conditions": "CE = HI, VIN = 5.5 V",
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        },
        {
          "name": "Dropout voltage IN to OUT",
          "symbol": "VDO",
          "kind": "electrical",
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          "min": null,
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          "max": 280,
          "conditions": "CE = LO, VIN = 5 V, I(OUT) = 1 A",
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        {
          "name": "Q1 off-state leakage current",
          "symbol": "IOFF",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
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          "conditions": "CE = HI, VIN = 5.5 V",
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        {
          "name": "Output voltage",
          "symbol": "VO(REG)",
          "kind": "electrical",
          "unit": "V",
          "min": 4.8,
          "typ": 5,
          "max": 5.2,
          "conditions": "CE = LO, VIN = 6 V, bq24381",
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        {
          "name": "Input overvoltage protection threshold",
          "symbol": "VOVP",
          "kind": "electrical",
          "unit": "V",
          "min": 6.88,
          "typ": 7.1,
          "max": 7.31,
          "conditions": "CE = LO, VIN: 5 V → 8 V",
          "source_page": 5,
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        {
          "name": "Hysteresis on OVP",
          "symbol": "Vhys(OVP)",
          "kind": "electrical",
          "unit": "mV",
          "min": 25,
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          "max": 120,
          "conditions": "CE = LO or HI, VIN: 7 V → 5 V",
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        },
        {
          "name": "Short-circuit detection threshold",
          "symbol": "IO(SC)",
          "kind": "electrical",
          "unit": "A",
          "min": 1.3,
          "typ": 1.5,
          "max": 1.7,
          "conditions": "3 V < VIN < VOVP - Vhys(OVP)",
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        {
          "name": "Retry interval if short-circuit detected",
          "symbol": "tREC(SC)",
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          "unit": "ms",
          "min": null,
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        {
          "name": "Battery overvoltage protection threshold",
          "symbol": "BVOVP",
          "kind": "electrical",
          "unit": "V",
          "min": 4.3,
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          "max": 4.4,
          "conditions": "VIN > 4.5 V, CE = LO",
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          "name": "Hysteresis on BV(OVP)",
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          "unit": "mV",
          "min": 200,
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          "max": 320,
          "conditions": "VIN > 4.5 V, CE = LO",
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        {
          "name": "Input bias current on VBAT pin",
          "symbol": "I(VBAT)",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
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          "max": 10,
          "conditions": "TJ = 25°C",
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          "name": "Thermal shutdown temperature",
          "symbol": "TJ(OFF)",
          "kind": "electrical",
          "unit": "°C",
          "min": 140,
          "typ": null,
          "max": 150,
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          "name": "Thermal shutdown hysteresis",
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          "unit": "°C",
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          "name": "Logic LOW input voltage CE",
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          "kind": "electrical",
          "unit": "μA",
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          "max": 15,
          "conditions": "V CE = 1.8 V",
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          "name": "FAULT output LOW voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.2,
          "conditions": "ISINK = 5 mA",
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          "name": "FAULT off-state leakage current, HI-Z",
          "symbol": "Ilkg",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
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          "max": 10,
          "conditions": "V FAULT = 5 V",
          "source_page": 5,
          "source": "datasheet"
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          "name": "Deglitch time, input power detected",
          "symbol": "tDGL(PGOOD)",
          "kind": "timing",
          "unit": "ms",
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          "typ": 8,
          "max": null,
          "conditions": "CE = LO or HI, VIN 0 V → 5 V, 1-μs rise-time",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input OV propagation delay",
          "symbol": "tPD(OVP)",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "VIN: 5 V → 10 V; not tested, specified by design",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Recovery time from input overvoltage condition",
          "symbol": "tREC(OVP)",
          "kind": "timing",
          "unit": "ms",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "CE = LO, VIN: 7 V → 5 V, 1-μs fall-time",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Deglitch time, battery overvoltage detected",
          "symbol": "tDGL(BVovp)",
          "kind": "timing",
          "unit": "μs",
          "min": null,
          "typ": 176,
          "max": null,
          "conditions": "VIN > 4.5 V, CE = LO, VBAT rising from 4.1 V to 4.4 V to FAULT going low",
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          "source": "datasheet"
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