RT9471DGQW

{
  "schema_version": 1,
  "type": "component",
  "slug": "rt9471dgqw",
  "title": "RT9471DGQW",
  "brief": "Richtek Tech Battery Management, WQFN-24(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)",
    "rt9471dgqw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "RT9471DGQW",
    "manufacturer": "Richtek Tech",
    "package": "WQFN-24(4x4)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8597532836354678784",
    "parts": {
      "symbol": "rt9471dgqw.kicad_sym",
      "footprint": "rt9471dgqw.kicad_mod",
      "model_3d": "rt9471dgqw-hero.glb",
      "model_3d_plain": "rt9471dgqw-etched.glb",
      "model_3d_step": "rt9471dgqw-etched.step",
      "model_3d_step_plain": "rt9471dgqw.step",
      "lbr": "rt9471dgqw.lbr"
    },
    "distributor_links": {
      "lcsc": "C17442001"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T23:38:38Z",
      "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; the internal reverse block MOSFET (Q1) is connected between VBUS and PMID with VBUS on source, and a capacitor from VBUS to GND must be placed as close as possible to the IC."
      },
      {
        "number": "2",
        "name": "D+",
        "type": "bidirectional",
        "description": "Positive line of the USB data pair used for D+/D- based USB host/charging port detection, including data contact detection and primary and secondary detection in BC1.2."
      },
      {
        "number": "3",
        "name": "D-",
        "type": "bidirectional",
        "description": "Negative line of the USB data pair used for D+/D- based USB host/charging port detection, including data contact detection and primary and secondary detection in BC1.2."
      },
      {
        "number": "4",
        "name": "STAT",
        "type": "output",
        "description": "Open-drain charger status output that indicates charger status and must be connected to a logic rail via a 2.2k to 10k resistor."
      },
      {
        "number": "5",
        "name": "SCL",
        "type": "input",
        "description": "I2C interface clock input that must be connected to the logic rail through a 10k resistor."
      },
      {
        "number": "6",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C interface data pin that must be connected to the logic rail through a 10k resistor."
      },
      {
        "number": "7",
        "name": "INT",
        "type": "output",
        "description": "Open-drain active-low interrupt output that sends low pulses to the host to report charger device status and faults, connected to a logic rail through a 10k resistor."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "9",
        "name": "CE",
        "type": "input",
        "description": "Charge enable input; when driven low, battery charging is enabled."
      },
      {
        "number": "10",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "11",
        "name": "TS",
        "type": "input",
        "description": "Temperature qualification voltage input for the JEITA profile that connects to an NTC thermistor, and charging suspends when the TS voltage is out of range."
      },
      {
        "number": "12",
        "name": "QON",
        "type": "input",
        "description": "BATFET (Q4) enable control input with an internal pull-high to the bias circuit via a 250k resistor, where a logic low exits ship mode or triggers system reset when no VBUS is present."
      },
      {
        "number": "13",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery connection point to the positive terminal of the battery pack, with the internal current sensing resistor connected between SYS and BAT."
      },
      {
        "number": "14",
        "name": "BAT",
        "type": "power_in",
        "description": "Battery connection point to the positive terminal of the battery pack, with the internal current sensing resistor connected between SYS and BAT."
      },
      {
        "number": "15",
        "name": "SYS",
        "type": "power_out",
        "description": "Converter output connection point, with the internal current sensing resistor connected between SYS and BAT and capacitors placed close to the pin."
      },
      {
        "number": "16",
        "name": "SYS",
        "type": "power_out",
        "description": "Converter output connection point, with the internal current sensing resistor connected between SYS and BAT and capacitors placed close to the pin."
      },
      {
        "number": "17",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "19",
        "name": "SW",
        "type": "passive",
        "description": "Switching node connecting to the output inductor, internally tied to the high-side MOSFET source and low-side MOSFET drain, with a bootstrap capacitor connected from SW to BTST."
      },
      {
        "number": "20",
        "name": "SW",
        "type": "passive",
        "description": "Switching node connecting to the output inductor, internally tied to the high-side MOSFET source and low-side MOSFET drain, with a bootstrap capacitor connected from SW to BTST."
      },
      {
        "number": "21",
        "name": "BTST",
        "type": "power_in",
        "description": "PWM high-side driver positive supply connected to the cathode of the internal bootstrap diode, with the bootstrap capacitor connected from SW to BTST."
      },
      {
        "number": "22",
        "name": "REGN",
        "type": "power_out",
        "description": "PWM low-side driver and internal supply output connected to the anode of the bootstrap diode, with a capacitor from REGN to GND placed close to the IC."
      },
      {
        "number": "23",
        "name": "PMID",
        "type": "power_in",
        "description": "Connected to the drain of the reverse blocking MOSFET (Q1) and the drain of the high-side switching MOSFET (Q2), with a capacitor from PMID to GND."
      },
      {
        "number": "24",
        "name": "VAC",
        "type": "input",
        "description": "Input voltage sensing pin that must be tied to VBUS."
      },
      {
        "number": "25",
        "name": "Thermal Pad",
        "type": "power_in",
        "description": "Thermal pad and ground reference that must be connected to GND and well soldered to a large PCB copper area for maximum power dissipation."
      }
    ],
    "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: RT9471DGQW decodes to the D function-support option (Pin2 = D+, Pin3 = D-), so the RT9471D column of; Pin-table capacitor and resistor values for VBUS, BAT, SYS, BTST, REGN and PMID were garbled in extr; Pin 1 VBUS and pin 24 VAC are swapped relative to the RT9471 column; the RT9471D column (VBUS = 1, V"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0807,
        "at": "2026-10-18T23:36:03"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8597532836354678784",
        "pages": 52,
        "sha256": "0664f5347d4ed917",
        "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": "rt9471dgqw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          4,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f7d256794c4147daf24dcae0554fae18510315e565ad1e239b475be7fef80d8b",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "rt9471dgqw-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f44a629d363f42873ec6fc1726033e7183a435b4a5b8c7797ec9bccbec80e079",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Richtek Tech",
      "Package": "WQFN-24(4x4)",
      "Category": "Power Management (PMIC)",
      "Pins": "25"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "0664f5347d4ed9178f3eb40fc4b6844894b4e6f2833719528d358a453c197f98",
      "rows": [
        {
          "name": "IBAT Q4 disabled quiescent/discharge current (BAT) in Q4 Disabled",
          "symbol": "IBAT_Q4_DIS",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 15,
          "max": 32,
          "conditions": "VBAT = 4.5V, High-Z mode and I2C disabled, Q4 disabled",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Battery Discharge Current (BAT) in Q4 Enable",
          "symbol": "IBAT_Q4_EN",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 55,
          "max": 85,
          "conditions": "VBAT = 4.5V, High-Z mode and I2C disabled, Q4 enabled",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Current (VBUS) in Buck Mode, High-Z",
          "symbol": "IBUS_HIZ",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 50,
          "max": 86,
          "conditions": "VBUS = 5V, High-Z mode and no battery",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Current (VBUS) in Buck Mode, High-Z",
          "symbol": "IBUS_HIZ",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 52,
          "max": 88,
          "conditions": "VBUS = 12V, High-Z mode and no battery",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Current (VBUS) in Buck Mode",
          "symbol": "IBUS_BUCK",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5,
          "max": 7,
          "conditions": "VBUS > VBUS_MIN_RISE, VBUS > VBAT, converter switching, VBAT = 3.8V, ISYS = 0A",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Battery Discharge Current (BAT) in Boost Mode",
          "symbol": "IBAT_BOOST",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4,
          "max": 5,
          "conditions": "VBAT = 4.2V, boost mode, IBUS = 0A, converter switching",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VBUS Operating Range",
          "symbol": "VBUS_OP",
          "kind": "electrical",
          "unit": "V",
          "min": 3.9,
          "typ": null,
          "max": 13.5,
          "conditions": "VBUS rising",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "REGN Turn Off Level with Only VBUS",
          "symbol": "VBUS_UVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 3,
          "typ": 3.3,
          "max": 3.6,
          "conditions": "VBUS falling",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Sleep Mode Falling Threshold",
          "symbol": "VSLEEP_FALL",
          "kind": "electrical",
          "unit": "mV",
          "min": 10,
          "typ": 60,
          "max": 120,
          "conditions": "VAC falling, VAC – VBAT",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Sleep Mode Rising Threshold",
          "symbol": "VSLEEP_RISE",
          "kind": "electrical",
          "unit": "mV",
          "min": 160,
          "typ": 250,
          "max": 340,
          "conditions": "VAC rising, VAC – VBAT",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VAC 5.8V Over-Voltage rising threshold",
          "symbol": "VAC_OVP_RISE",
          "kind": "electrical",
          "unit": "V",
          "min": 5.5,
          "typ": 5.8,
          "max": 6.1,
          "conditions": "VAC rising",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VAC 6.5V Over-Voltage rising threshold",
          "symbol": "VAC_OVP_RISE",
          "kind": "electrical",
          "unit": "V",
          "min": 6.2,
          "typ": 6.5,
          "max": 6.8,
          "conditions": "VAC rising",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VAC 10.9V Over-Voltage Rising Threshold",
          "symbol": "VAC_OVP_RISE",
          "kind": "electrical",
          "unit": "V",
          "min": 10.3,
          "typ": 10.9,
          "max": 11.5,
          "conditions": "VAC rising",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "VAC 14V Over-Voltage Rising Threshold",
          "symbol": "VAC_OVP_RISE",
          "kind": "electrical",
          "unit": "V",
          "min": 13.3,
          "typ": 14,
          "max": 14.7,
          "conditions": "VAC rising",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "BAT for Active I2C, No Adapter",
          "symbol": "VBAT_UVLO",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": 2.2,
          "max": 2.4,
          "conditions": "VBAT rising",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Battery Depletion Falling Threshold",
          "symbol": "VBAT_DPL_FALL",
          "kind": "electrical",
          "unit": "V",
          "min": 2.15,
          "typ": 2.38,
          "max": 2.65,
          "conditions": "VBAT falling",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Battery Depletion Rising Threshold",
          "symbol": "VBAT_DPL_RISE",
          "kind": "electrical",
          "unit": "V",
          "min": 2.4,
          "typ": 2.6,
          "max": 2.8,
          "conditions": "VBAT rising",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Bad Adapter Detection Rising Threshold",
          "symbol": "VBUS_MIN_RISE",
          "kind": "electrical",
          "unit": "V",
          "min": 3.6,
          "typ": 3.8,
          "max": 4,
          "conditions": "VBUS rising",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "System Regulation Voltage",
          "symbol": "VSYS_MIN",
          "kind": "electrical",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": null,
          "conditions": "VBAT < VSYS_MIN = 3.5V, Q4 disabled/enable",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Charge Voltage Range",
          "symbol": "VBAT_REG_RANGE",
          "kind": "electrical",
          "unit": "V",
          "min": 3.9,
          "typ": null,
          "max": 4.7,
          "conditions": "Default = 4.2V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Charge Voltage Setting Accuracy",
          "symbol": "VBAT_REG_ACC",
          "kind": "electrical",
          "unit": "%",
          "min": -0.5,
          "typ": null,
          "max": 0.5,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Charge Current Regulation Range",
          "symbol": "ICHG_REG_RANGE",
          "kind": "electrical",
          "unit": "mA",
          "min": 0,
          "typ": null,
          "max": 3150,
          "conditions": "Default = 2000mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Charge Current Regulation Accuracy",
          "symbol": "ICHG_REG_ACC",
          "kind": "electrical",
          "unit": "%",
          "min": -20,
          "typ": null,
          "max": 20,
          "conditions": "VBAT=3.8V, ICHG_REG < 150mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Charge Current Regulation Accuracy",
          "symbol": "ICHG_REG_ACC",
          "kind": "electrical",
          "unit": "%",
          "min": -10,
          "typ": null,
          "max": 10,
          "conditions": "VBAT=3.8V, 150mA ≤ ICHG_REG < 750mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Charge Current Regulation Accuracy",
          "symbol": "ICHG_REG_ACC",
          "kind": "electrical",
          "unit": "%",
          "min": -5,
          "typ": null,
          "max": 5,
          "conditions": "VBAT=3.8V, ICHG_REG ≥ 750mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Pre-Charge Falling Threshold",
          "symbol": "VPRE_CHG_FALL",
          "kind": "electrical",
          "unit": "V",
          "min": 2.75,
          "typ": 2.9,
          "max": 3.05,
          "conditions": "ICHG = 200mA, VPRE_CHG = 3.1V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Pre-Charge Rising Threshold",
          "symbol": "VPRE_CHG_RISE",
          "kind": "electrical",
          "unit": "V",
          "min": 2.95,
          "typ": 3.1,
          "max": 3.25,
          "conditions": "Pre-charge to fast charge, VPRE_CHG = 3.1V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "OTG Voltage Limit Regulation Range",
          "symbol": "VOTG_CV_RANGE",
          "kind": "electrical",
          "unit": "V",
          "min": 4.85,
          "typ": null,
          "max": 5.3,
          "conditions": "Default = 5.15V",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "OTG Voltage Limit Regulation Accuracy",
          "symbol": "VOTG_CV_ACC",
          "kind": "electrical",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "VBAT = 3.8V, IPMID = 0A, VOTG_REG = 5.15V",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "OTG Current Limit Regulation Accuracy",
          "symbol": "IOTG_CC",
          "kind": "electrical",
          "unit": "A",
          "min": 1.2,
          "typ": 1.4,
          "max": 1.6,
          "conditions": "IOTG_LIMIT_REG_SEL = 1.2A",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "OTG Current Limit Regulation Accuracy",
          "symbol": "IOTG_CC",
          "kind": "electrical",
          "unit": "A",
          "min": 0.5,
          "typ": 0.6,
          "max": 0.7,
          "conditions": "IOTG_LIMIT_REG_SEL = 0.5A",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "OTG Over-Voltage Threshold",
          "symbol": "VOTG_OVP",
          "kind": "electrical",
          "unit": "V",
          "min": 6.2,
          "typ": 6.5,
          "max": 6.8,
          "conditions": "VAC rising, VAC_OVP = 6.5V",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "PWM Switching Frequency (buck)",
          "symbol": "fSW_BUCK",
          "kind": "electrical",
          "unit": "kHz",
          "min": 1350,
          "typ": 1500,
          "max": 1650,
          "conditions": "Oscillator frequency, buck mode",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "PWM Switching Frequency (boost)",
          "symbol": "fSW_BOOST",
          "kind": "electrical",
          "unit": "kHz",
          "min": 1350,
          "typ": 1500,
          "max": 1650,
          "conditions": "Oscillator frequency, boost mode",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "REGN LDO Output Voltage",
          "symbol": "VREGN",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": 4.9,
          "max": 5.3,
          "conditions": "VBUS = 9V, IREGN = 40mA",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "REGN LDO Output Voltage",
          "symbol": "VREGN",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": 4.9,
          "max": 5,
          "conditions": "VBUS = 5V, IREGN = 20mA",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Input High Threshold Voltage (CE, PSEL, SCL, SDA)",
          "symbol": "VIH_CTRL",
          "kind": "electrical",
          "unit": "V",
          "min": 1.3,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 11,
          "source": "datasheet"
        },
        {
          "name": "Input Low Threshold Voltage (CE, PSEL, SCL, SDA)",
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