RT8231AGQW

{
  "slug": "rt8231agqw",
  "version": "0.1.0",
  "type": "component",
  "description": "Richtek Tech DC-DC Converters, WQFN-20-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "rt8231agqw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "rt8231agqw.kicad_sym",
    "rt8231agqw.kicad_mod",
    "rt8231agqw.glb",
    "rt8231agqw.step",
    "rt8231agqw.lbr",
    "docs/hero.png",
    "docs/rt8231agqw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "rt8231agqw-hero.glb",
    "rt8231agqw-hero.overlay.json",
    "rt8231agqw-etched.glb"
  ],
  "component": {
    "mpn": "RT8231AGQW",
    "manufacturer": "Richtek Tech",
    "package": "WQFN-20-EP(3x3)",
    "pin_count": 21,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e4583569ac21f2515fd6689b9c3bedf3.pdf",
    "parts": {
      "symbol": "rt8231agqw.kicad_sym",
      "footprint": "rt8231agqw.kicad_mod",
      "model_3d": "rt8231agqw-hero.glb",
      "model_3d_plain": "rt8231agqw-etched.glb",
      "model_3d_step": "rt8231agqw-etched.step",
      "model_3d_step_plain": "rt8231agqw.step",
      "lbr": "rt8231agqw.lbr"
    },
    "distributor_links": {
      "lcsc": "C2972228",
      "digikey": "1028-RT8231AGQWTR-ND",
      "mouser": "835-RT8231AGQW"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T06:06:30Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "1028-RT8231AGQWTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "835-RT8231AGQW",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VTTGND",
        "type": "power_in",
        "description": "Power ground for the VTT LDO."
      },
      {
        "number": "2",
        "name": "VTTSNS",
        "type": "input",
        "description": "Voltage sense input for the VTT LDO; connect to the terminal of the VTT_LDO output capacitor."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad must be soldered to a large PCB and connected to GND for maximum power dissipation."
      },
      {
        "number": "4",
        "name": "VTTREF",
        "type": "output",
        "description": "VTTREF buffered reference output."
      },
      {
        "number": "5",
        "name": "VDDQ",
        "type": "input",
        "description": "Reference input for VTT and VTTREF."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "Feedback voltage input; connect to a resistive voltage divider from VDDQ to GND to adjust the output voltage."
      },
      {
        "number": "7",
        "name": "S3",
        "type": "input",
        "description": "VTT LDO enable control input; do not leave this pin floating."
      },
      {
        "number": "8",
        "name": "S5",
        "type": "input",
        "description": "PWM enable control input; do not leave this pin floating."
      },
      {
        "number": "9",
        "name": "TON",
        "type": "input",
        "description": "Sets the UGATE on-time through a pull-up resistor connected to VIN."
      },
      {
        "number": "10",
        "name": "PGOOD",
        "type": "output",
        "description": "Power good open-drain output; high when the VDDQ output voltage is within the target range."
      },
      {
        "number": "11",
        "name": "VID",
        "type": "input",
        "description": "Internal reference voltage setting input."
      },
      {
        "number": "12",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage input for the analog supply and LGATE gate driver."
      },
      {
        "number": "13",
        "name": "CS",
        "type": "input",
        "description": "Current limit threshold setting input; connect to GND through the voltage setting resistor."
      },
      {
        "number": "14",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground for the low-side MOSFET."
      },
      {
        "number": "15",
        "name": "LGATE",
        "type": "output",
        "description": "Low-side gate driver output for VDDQ."
      },
      {
        "number": "16",
        "name": "PHASE",
        "type": "passive",
        "description": "Switch node connected to the external inductor for VDDQ; also serves as the current sense comparator input for low-side MOSFET RDS(ON) sensing."
      },
      {
        "number": "17",
        "name": "UGATE",
        "type": "output",
        "description": "High-side gate driver output for VDDQ."
      },
      {
        "number": "18",
        "name": "BOOT",
        "type": "power_out",
        "description": "Bootstrap supply for the high-side gate driver."
      },
      {
        "number": "19",
        "name": "VLDOIN",
        "type": "power_in",
        "description": "Power supply input for the VTT LDO."
      },
      {
        "number": "20",
        "name": "VTT",
        "type": "power_out",
        "description": "Power output of the VTT LDO."
      },
      {
        "number": "21",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad, which must be soldered to a large PCB and connected to GND 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: The datasheet's Functional Pin Description table (page 3) lists GND on pins 3 and 21 (exposed pad). ; The top-view pin configuration on page 1 is scrambled in the text extraction, so pin numbering was t; The datasheet names the package WQFN-20L 3x3 (QW, W-Type), not 'WQFN-20-EP(3x3)' as in the package h"
        ],
        "pages_sent": 4,
        "cost_usd": 0.0336,
        "at": "2026-10-21T06:01:55"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/e4583569ac21f2515fd6689b9c3bedf3.pdf",
        "pages": 23,
        "sha256": "0a73d12a63781818",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 21,
        "described": 21,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "rt8231agqw.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          3.0,
          0.52
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0ee4e1082236390795238cd34b082d96efd160d6292c636cc40201a5a30cdc63",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "rt8231agqw-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": "61b94d388cb9c161365063ad63ab411a8bf413abde21e50228ded4d733b97b08",
        "checked": "2026-10-21",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}