BQ25730RSNR

{
  "slug": "bq25730rsnr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Battery Management ICs, QFN-32(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "bq25730rsnr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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    "bq25730rsnr.step",
    "bq25730rsnr.lbr",
    "docs/hero.png",
    "docs/bq25730rsnr-datasheet.pdf",
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    "bq25730rsnr-hero.overlay.json",
    "bq25730rsnr-etched.glb"
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  "component": {
    "mpn": "BQ25730RSNR",
    "manufacturer": "Texas Instruments",
    "package": "QFN-32(4x4)",
    "pin_count": 33,
    "category": "Power Supply Chip",
    "subcategory": "Battery Management ICs",
    "datasheet": "https://www.ti.com/cn/lit/gpn/bq25730",
    "parts": {
      "symbol": "bq25730rsnr.kicad_sym",
      "footprint": "bq25730rsnr.kicad_mod",
      "model_3d": "bq25730rsnr-hero.glb",
      "model_3d_plain": "bq25730rsnr-etched.glb",
      "model_3d_step": "bq25730rsnr-etched.step",
      "model_3d_step_plain": "bq25730rsnr.step",
      "lbr": "bq25730rsnr.lbr"
    },
    "distributor_links": {
      "lcsc": "C5219071"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T21:12:40Z",
      "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; an input low-pass filter of 1 Ω and 0.47 µF (minimum) is recommended."
      },
      {
        "number": "2",
        "name": "ACN",
        "type": "input",
        "description": "Input current sense amplifier negative input, leakage matched to ACP, requiring an RC low-pass filter between the sense resistor and the pin."
      },
      {
        "number": "3",
        "name": "ACP",
        "type": "input",
        "description": "Input current sense amplifier positive input, leakage matched to ACN, requiring an RC low-pass filter between the sense resistor and the pin."
      },
      {
        "number": "4",
        "name": "CHRG_OK",
        "type": "output",
        "description": "Open-drain active-high indicator of a good power source at the input, pulled up via 10 kΩ and high after 50 ms deglitch when VBUS is between 3.5 V and 25.8 V."
      },
      {
        "number": "5",
        "name": "OTG/VAP/FRS",
        "type": "input",
        "description": "Active-high input that enables OTG mode (OTG_VAP_MODE=1b and EN_OTG=1b) or FRS mode in forward operation (EN_FRS=1b)."
      },
      {
        "number": "6",
        "name": "ILIM_HIZ",
        "type": "input",
        "description": "Input current limit setting pin programmed by a resistor divider from VDDA with V(ILIM_HIZ) = 1 V + 40 × IDPM × Rac; below 0.4 V the device enters HIZ mode and above 0.8 V it exits."
      },
      {
        "number": "7",
        "name": "VDDA",
        "type": "power_in",
        "description": "Internal reference bias pin; connect a 10-Ω resistor from REGN to VDDA and a 1-µF ceramic capacitor from VDDA to power ground."
      },
      {
        "number": "8",
        "name": "IADPT",
        "type": "output",
        "description": "Adapter current monitor output, VIADPT = 20 or 40 × (VACP - VACN), also programs inductance via a resistor to ground (191 kΩ or 187 kΩ for 4.7 µH), clamped below 3.3 V with 100 pF or less decoupling."
      },
      {
        "number": "9",
        "name": "IBAT",
        "type": "output",
        "description": "Battery current monitor output, VIBAT = 8 or 16 × (VSRP - VSRN) for charge current, clamped below 3.3 V, with 100 pF or less decoupling and may float if unused."
      },
      {
        "number": "10",
        "name": "PSYS",
        "type": "output",
        "description": "Current-mode system power monitor proportional to total adapter and battery power, with a resistor to ground to set the voltage, clamped at 3.3 V and may float if unused."
      },
      {
        "number": "11",
        "name": "PROCHOT",
        "type": "output",
        "description": "Active-low open-drain output that pulses when an event in the PROCHOT profile (adapter input current, battery discharge current, system voltage) triggers, with pulse width set by PROCHOT_WIDTH bits."
      },
      {
        "number": "12",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C open-drain data I/O, connected to the host data line with a 10-kΩ pullup resistor."
      },
      {
        "number": "13",
        "name": "SCL",
        "type": "input",
        "description": "I2C clock input from the host controller or smart battery, with a 10-kΩ pullup resistor."
      },
      {
        "number": "14",
        "name": "CMPIN",
        "type": "input",
        "description": "Independent comparator input compared with an internal reference, with a resistor to CMPOUT for hysteresis when CMP_POL=1b, and tied to ground if unused."
      },
      {
        "number": "15",
        "name": "CMPOUT",
        "type": "output",
        "description": "Open-drain independent comparator output requiring a pullup resistor to the supply rail, floated if the comparator is unused."
      },
      {
        "number": "16",
        "name": "COMP1",
        "type": "passive",
        "description": "Buck-boost converter compensation pin 1 connected to an RC network (see Section 8.3.12)."
      },
      {
        "number": "17",
        "name": "COMP2",
        "type": "passive",
        "description": "Buck-boost converter compensation pin 2 connected to an RC network (see Section 8.3.12)."
      },
      {
        "number": "18",
        "name": "CELL_BATPRESZ",
        "type": "input",
        "description": "Battery cell selection pin for 1- to 5-cell setting biased from VDDA through a resistor divider, which also sets SYSOVP thresholds, indicates battery removal when pulled low, and allows no external capacitor."
      },
      {
        "number": "19",
        "name": "SRN",
        "type": "input",
        "description": "Charge current sense amplifier negative input and battery voltage sensing, with a 0.1-µF filter capacitor across the sense resistor and 10-Ω resistor in series, leakage matched to SRP."
      },
      {
        "number": "20",
        "name": "SRP",
        "type": "input",
        "description": "Charge current sense amplifier positive input with a 0.1-µF filter capacitor across the sense resistor and 10-Ω resistor in series, leakage matched to SRN."
      },
      {
        "number": "21",
        "name": "BATDRV",
        "type": "output",
        "description": "P-channel BATFET gate driver output, shorted to VSYS to turn the BATFET off and driven 10 V below VSYS to turn it fully on."
      },
      {
        "number": "22",
        "name": "VSYS",
        "type": "power_in",
        "description": "Charger system voltage sensing, with maximum regulation limit set by ChargeVoltage register plus 150 mV and minimum limit set by the VSYS_MIN register."
      },
      {
        "number": "23",
        "name": "SW2",
        "type": "passive",
        "description": "Boost mode switching node, connected to the source of the boost half-bridge high-side n-channel MOSFET."
      },
      {
        "number": "24",
        "name": "HIDRV2",
        "type": "output",
        "description": "Boost mode high-side power MOSFET (Q4) driver, connected to the high-side n-channel MOSFET gate."
      },
      {
        "number": "25",
        "name": "BTST2",
        "type": "passive",
        "description": "Boost mode high-side MOSFET driver supply; connect a 0.047-µF capacitor between SW2 and BTST2."
      },
      {
        "number": "26",
        "name": "LODRV2",
        "type": "output",
        "description": "Boost mode low-side power MOSFET (Q3) driver, connected to the low-side n-channel MOSFET gate."
      },
      {
        "number": "27",
        "name": "PGND",
        "type": "power_in",
        "description": "Device power ground."
      },
      {
        "number": "28",
        "name": "REGN",
        "type": "power_out",
        "description": "6-V linear regulator output from VBUS or VSYS for power stage gate drive, active when VBUS is above VVBUS_CONVEN, with a 2.2- or 3.3-µF ceramic capacitor to power ground."
      },
      {
        "number": "29",
        "name": "LODRV1",
        "type": "output",
        "description": "Buck mode low-side power MOSFET (Q2) driver, connected to the low-side n-channel MOSFET gate."
      },
      {
        "number": "30",
        "name": "BTST1",
        "type": "passive",
        "description": "Buck mode high-side MOSFET driver supply; connect a 0.047-µF capacitor between SW1 and BTST1."
      },
      {
        "number": "31",
        "name": "HIDRV1",
        "type": "output",
        "description": "Buck mode high-side power MOSFET (Q1) driver, connected to the high-side n-channel MOSFET gate."
      },
      {
        "number": "32",
        "name": "SW1",
        "type": "passive",
        "description": "Buck mode switching node, connected to the source of the buck half-bridge high-side n-channel MOSFET."
      },
      {
        "number": "33",
        "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-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 gives the exposed thermal pad no pin number, so 'PAD' is a placeholder. Its connection; The datasheet lists most pins only as PWR, I or O. I chose KiCad types from the descriptions. Check "
        ],
        "pages_sent": 28,
        "cost_usd": 0.3344,
        "at": "2026-10-22T21:12:28"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/bq25730",
        "pages": 111,
        "sha256": "42ecebe67b94f6bf",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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        "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": "7b482a511cdf2cf875c31931f9fea7f745b8dac2ea6203531cd6604f40a290cb",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "bq25730rsnr-etched.step",
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}