MAX17634CATP+T

{
  "slug": "max17634catp-t",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Inc Maxim Integrated DC-DC Converters, TQFN-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "max17634catp+t",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "max17634catp-t.kicad_sym",
    "max17634catp-t.kicad_mod",
    "max17634catp-t.glb",
    "max17634catp-t.step",
    "max17634catp-t.lbr",
    "docs/hero.png",
    "docs/max17634catp-t-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "max17634catp-t-hero.glb",
    "max17634catp-t-hero.overlay.json",
    "max17634catp-t-etched.glb"
  ],
  "component": {
    "mpn": "MAX17634CATP+T",
    "manufacturer": "Analog Devices Inc Maxim Integrated",
    "package": "TQFN-20(4x4)",
    "pin_count": 21,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225385548767232",
    "parts": {
      "symbol": "max17634catp-t.kicad_sym",
      "footprint": "max17634catp-t.kicad_mod",
      "model_3d": "max17634catp-t-hero.glb",
      "model_3d_plain": "max17634catp-t-etched.glb",
      "model_3d_step": "max17634catp-t-etched.step",
      "model_3d_step_plain": "max17634catp-t.step",
      "lbr": "max17634catp-t.lbr"
    },
    "distributor_links": {
      "lcsc": "C2976409",
      "digikey": "175-MAX17634CATP+TTR-ND",
      "mouser": "700-MAX17634CATP+T"
    },
    "distributor_check": {
      "checked_at": "2026-10-20T21:29:45Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "175-MAX17634CATP+TTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "700-MAX17634CATP+T",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground pin of the converter that must be connected externally to the power ground plane."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "Power-supply input pin with a 4.5V to 36V input supply range, to be decoupled to PGND with a minimum of 4.7µF placed close to the IN and PGND pins."
      },
      {
        "number": "3",
        "name": "IN",
        "type": "power_in",
        "description": "Power-supply input pin with a 4.5V to 36V input supply range, to be decoupled to PGND with a minimum of 4.7µF placed close to the IN and PGND pins."
      },
      {
        "number": "4",
        "name": "EN/UVLO",
        "type": "input",
        "description": "Enable/undervoltage-lockout pin that enables the output when driven above VENR, disables the device when pulled below VENF, and sets the turn-on input voltage through a resistor divider between IN and SGND."
      },
      {
        "number": "5",
        "name": "RESET",
        "type": "output",
        "description": "Open-drain reset output that is driven low when FB drops below 92% of its set value and goes high 1024 cycles after FB rises above 95% of its set value."
      },
      {
        "number": "6",
        "name": "INTVCC",
        "type": "power_out",
        "description": "5V LDO output that must be bypassed to SGND with a 2.2µF ceramic capacitor, and the LDO does not support external loading."
      },
      {
        "number": "7",
        "name": "SGND",
        "type": "power_in",
        "description": "Analog ground pin of the device, which the exposed pad must be connected to."
      },
      {
        "number": "8",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start input where a capacitor connected from SS to SGND sets the soft-start time."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Feedback input that connects to VOUT for the MAX17634A and MAX17634B, or to the center of an external resistor divider from the output to SGND for the MAX17634C."
      },
      {
        "number": "10",
        "name": "RT",
        "type": "input",
        "description": "Programmable switching-frequency input where a resistor from RT to SGND sets the frequency between 400kHz and 2.2MHz, and leaving RT open selects the default 500kHz."
      },
      {
        "number": "11",
        "name": "MODE/SYNC",
        "type": "input",
        "description": "Mode-selection pin that selects PWM operation when connected to SGND, DCM when connected to INTVCC, and PFM when left open, and that can also accept an external clock for synchronization."
      },
      {
        "number": "12",
        "name": "EXTVCC",
        "type": "power_in",
        "description": "External power supply input that reduces internal LDO loss and should be connected to the buck output only when programmed to 5V, otherwise connected to SGND."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "14",
        "name": "IN",
        "type": "power_in",
        "description": "Power-supply input pin with a 4.5V to 36V input supply range, to be decoupled to PGND with a minimum of 4.7µF placed close to the IN and PGND pins."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground pin of the converter that must be connected externally to the power ground plane."
      },
      {
        "number": "16",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "17",
        "name": "LX",
        "type": "output",
        "description": "Switching node pin that connects to the switching side of the inductor."
      },
      {
        "number": "18",
        "name": "LX",
        "type": "output",
        "description": "Switching node pin that connects to the switching side of the inductor."
      },
      {
        "number": "19",
        "name": "LX",
        "type": "output",
        "description": "Switching node pin that connects to the switching side of the inductor."
      },
      {
        "number": "20",
        "name": "BST",
        "type": "passive",
        "description": "Boost flying capacitor pin where a 0.1µF ceramic capacitor is connected between BST and LX."
      },
      {
        "number": "21",
        "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-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 exposed pad has no printed number in the datasheet pin table (listed as '—'), so it is given the; Pin 20 is labeled BST in the table, but the 'BST' pin-configuration drawing text is garbled, so the ; The ordering part is MAX17634CATP+T; the datasheet ordering table lists MAX17634CATP+ (20 TQFN 4mm x",
          "exposed pad 21 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0557,
        "at": "2026-10-20T21:24:15"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590225385548767232",
        "pages": 22,
        "sha256": "77bf297752a23d9c",
        "source_tier": "lcsc"
      },
      "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": [
      {
        "file": "max17634catp-t.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": "c9476a1612023de37f27b4972110ab6ac6dc0eaf5ac48957a2e1c497650082a5",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "max17634catp-t-etched.step",
        "role": "eda",
        "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": "02faef510a640fdd74207e0fa95c6d89b1ba2af9e3f0307222b12b7ac8e866f5",
        "checked": "2026-10-20",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}