RT7273GQW

{
  "slug": "rt7273gqw",
  "version": "0.1.0",
  "type": "component",
  "description": "Richtek Tech DC-DC Converters, WQFN-40(6x6). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "rt7273gqw",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
  },
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    "README.md",
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    "rt7273gqw.kicad_mod",
    "rt7273gqw.glb",
    "rt7273gqw.step",
    "rt7273gqw.lbr",
    "docs/hero.png",
    "docs/rt7273gqw-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "rt7273gqw-hero.glb",
    "rt7273gqw-hero.overlay.json",
    "rt7273gqw-etched.glb"
  ],
  "component": {
    "mpn": "RT7273GQW",
    "manufacturer": "Richtek Tech",
    "package": "WQFN-40(6x6)",
    "pin_count": 41,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/cbb1696a761ee6f4927020230d85a0c8.pdf",
    "parts": {
      "symbol": "rt7273gqw.kicad_sym",
      "footprint": "rt7273gqw.kicad_mod",
      "model_3d": "rt7273gqw-hero.glb",
      "model_3d_plain": "rt7273gqw-etched.glb",
      "model_3d_step": "rt7273gqw-etched.step",
      "model_3d_step_plain": "rt7273gqw.step",
      "lbr": "rt7273gqw.lbr"
    },
    "distributor_links": {
      "lcsc": "C3028966"
    },
    "distributor_check": {
      "checked_at": "2026-10-23T18:15:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 886 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RLIM3",
        "type": "passive",
        "description": "Channel 3 current limit adjust pin; the cycle-by-cycle current limit is set by an external resistor."
      },
      {
        "number": "2",
        "name": "SS3",
        "type": "passive",
        "description": "Channel 3 soft-start pin; an external capacitor to GND sets the soft-start time."
      },
      {
        "number": "3",
        "name": "COMP3",
        "type": "passive",
        "description": "Channel 3 compensation pin; connect a simple RC network to optimize transient versus DC accuracy."
      },
      {
        "number": "4",
        "name": "FB3",
        "type": "input",
        "description": "Channel 3 feedback input; connect to the midpoint of the resistor divider from VOUT3 (VOUT = 0.8V x (1 + Rtop/Rbottom))."
      },
      {
        "number": "5",
        "name": "SYNC",
        "type": "input",
        "description": "Synchronous clock input for the oscillator; connect to GND if not used."
      },
      {
        "number": "6",
        "name": "ROSC",
        "type": "passive",
        "description": "Oscillator resistor pin; an external resistor sets the switching frequency between 300kHz and 2.2MHz (383kΩ gives 500kHz)."
      },
      {
        "number": "7",
        "name": "FB1",
        "type": "input",
        "description": "Channel 1 feedback input; connect to the midpoint of the resistor divider from VOUT1 (VOUT = 0.8V x (1 + Rtop/Rbottom))."
      },
      {
        "number": "8",
        "name": "COMP1",
        "type": "passive",
        "description": "Channel 1 compensation pin; connect a simple RC network to optimize transient versus DC accuracy."
      },
      {
        "number": "9",
        "name": "SS1",
        "type": "passive",
        "description": "Channel 1 soft-start pin; an external capacitor to GND sets the soft-start time."
      },
      {
        "number": "10",
        "name": "RLIM1",
        "type": "passive",
        "description": "Channel 1 current limit adjust pin; the cycle-by-cycle current limit is set by an external resistor."
      },
      {
        "number": "11",
        "name": "EN1",
        "type": "input",
        "description": "Channel 1 enable; pulled high to enable and low to disable, internally pulled high when floating."
      },
      {
        "number": "12",
        "name": "BOOT1",
        "type": "passive",
        "description": "Channel 1 bootstrap capacitor connection for the high-side switch drive, connected to LX1 through a capacitor."
      },
      {
        "number": "13",
        "name": "VIN1",
        "type": "power_in",
        "description": "Channel 1 power input, 4.5V to 18V."
      },
      {
        "number": "14",
        "name": "LX1",
        "type": "output",
        "description": "Channel 1 switch output node connected to the inductor."
      },
      {
        "number": "15",
        "name": "LX1",
        "type": "output",
        "description": "Channel 1 switch output node connected to the inductor."
      },
      {
        "number": "16",
        "name": "LX2",
        "type": "output",
        "description": "Channel 2 switch output node connected to the inductor."
      },
      {
        "number": "17",
        "name": "LX2",
        "type": "output",
        "description": "Channel 2 switch output node connected to the inductor."
      },
      {
        "number": "18",
        "name": "VIN2",
        "type": "power_in",
        "description": "Channel 2 power input, 4.5V to 18V."
      },
      {
        "number": "19",
        "name": "BOOT2",
        "type": "passive",
        "description": "Channel 2 bootstrap capacitor connection for the high-side switch drive, connected to LX2 through a capacitor."
      },
      {
        "number": "20",
        "name": "EN2",
        "type": "input",
        "description": "Channel 2 enable; pulled high to enable and low to disable, internally pulled high when floating."
      },
      {
        "number": "21",
        "name": "RLIM2",
        "type": "passive",
        "description": "Channel 2 current limit adjust pin; the cycle-by-cycle current limit is set by an external resistor."
      },
      {
        "number": "22",
        "name": "SS2",
        "type": "passive",
        "description": "Channel 2 soft-start pin; an external capacitor to GND sets the soft-start time."
      },
      {
        "number": "23",
        "name": "COMP2",
        "type": "passive",
        "description": "Channel 2 compensation pin; connect a simple RC network to optimize transient versus DC accuracy."
      },
      {
        "number": "24",
        "name": "FB2",
        "type": "input",
        "description": "Channel 2 feedback input; connect to the midpoint of the resistor divider from VOUT2 (VOUT = 0.8V x (1 + Rtop/Rbottom))."
      },
      {
        "number": "25",
        "name": "LOWP",
        "type": "input",
        "description": "Active-high low-power input; discontinuous operating mode at light load when LOWP = High."
      },
      {
        "number": "26",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "27",
        "name": "PG",
        "type": "output",
        "description": "Power good indicator output."
      },
      {
        "number": "28",
        "name": "PVCC",
        "type": "power_out",
        "description": "5V internal regulator output; connect a 10µF capacitor between this pin and GND."
      },
      {
        "number": "29",
        "name": "VCC",
        "type": "power_out",
        "description": "4.6V internal regulator output; connect a 3.3µF capacitor between this pin and GND."
      },
      {
        "number": "30",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "31",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "32",
        "name": "VINR",
        "type": "power_in",
        "description": "Power supply voltage input for the internal control circuit."
      },
      {
        "number": "33",
        "name": "VINR",
        "type": "power_in",
        "description": "Power supply voltage input for the internal control circuit."
      },
      {
        "number": "34",
        "name": "VINR",
        "type": "power_in",
        "description": "Power supply voltage input for the internal control circuit."
      },
      {
        "number": "35",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "36",
        "name": "LX3",
        "type": "output",
        "description": "Channel 3 switch output node connected to the inductor."
      },
      {
        "number": "37",
        "name": "LX3",
        "type": "output",
        "description": "Channel 3 switch output node connected to the inductor."
      },
      {
        "number": "38",
        "name": "VIN3",
        "type": "power_in",
        "description": "Channel 3 power input, 4.5V to 18V."
      },
      {
        "number": "39",
        "name": "BOOT3",
        "type": "passive",
        "description": "Channel 3 bootstrap capacitor connection for the high-side switch drive, connected to LX3 through a capacitor."
      },
      {
        "number": "40",
        "name": "EN3",
        "type": "input",
        "description": "Channel 3 enable; pulled high to enable and low to disable, internally pulled high when floating."
      },
      {
        "number": "41",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad; must be soldered to a large PCB area 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-sonnet-5-5",
        "primary_mode": "text+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Document is an evaluation board guide, not the full datasheet. Pin numbers were read from the small ; BOOTx, LXx and VINx descriptions are not stated in the text; they are inferred from the schematic na",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.2721,
        "at": "2026-10-23T18:15:23"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/cbb1696a761ee6f4927020230d85a0c8.pdf",
        "pages": 8,
        "sha256": "1067520e81c1c8d6",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 41,
        "described": 41,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          6.0,
          1.0
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e5b4286c2329085d9ef7f90d5eb5bf41a435241ecc1baaf1383823b6d6a946ae",
        "checked": "2026-10-23",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "rt7273gqw-etched.step",
        "role": "eda",
        "up": "Z",
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  }
}