RT9471DGQW

{
  "slug": "rt9471dgqw",
  "version": "0.1.0",
  "type": "component",
  "description": "Richtek Tech Battery Management, WQFN-24(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "rt9471dgqw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "rt9471dgqw.kicad_sym",
    "rt9471dgqw.kicad_mod",
    "rt9471dgqw.glb",
    "rt9471dgqw.step",
    "rt9471dgqw.lbr",
    "docs/hero.png",
    "docs/rt9471dgqw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "rt9471dgqw-hero.glb",
    "rt9471dgqw-hero.overlay.json",
    "rt9471dgqw-etched.glb"
  ],
  "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": [
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        "file": "rt9471dgqw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          4.0,
          0.77
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "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": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "f44a629d363f42873ec6fc1726033e7183a435b4a5b8c7797ec9bccbec80e079",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}