LM63635DQPWPRQ1

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm63635dqpwprq1",
  "title": "LM63635DQPWPRQ1",
  "brief": "Texas Instruments DC-DC Converters, HTSSOP-16-EP. 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 supply chip",
    "lm63635dqpwprq1",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM63635DQPWPRQ1",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-16-EP",
    "pin_count": 17,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm63635dqpwprq1.pdf",
    "parts": {
      "symbol": "lm63635dqpwprq1.kicad_sym",
      "footprint": "lm63635dqpwprq1.kicad_mod",
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      "model_3d_plain": "lm63635dqpwprq1-etched.glb",
      "model_3d_step": "lm63635dqpwprq1-etched.step",
      "model_3d_step_plain": "lm63635dqpwprq1.step",
      "lbr": "lm63635dqpwprq1.lbr"
    },
    "distributor_links": {
      "lcsc": "C1857546",
      "digikey": "296-LM63635DQPWPRQ1TR-ND",
      "mouser": "595-LM63635DQPWPRQ1"
    },
    "distributor_check": {
      "checked_at": "2026-10-27T00:57:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-LM63635DQPWPRQ1TR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-LM63635DQPWPRQ1",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "power_out",
        "description": "Regulator switch node, connected to the power inductor."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "power_out",
        "description": "Regulator switch node, connected to the power inductor (second SW pin, same net as pin 1)."
      },
      {
        "number": "3",
        "name": "CBOOT",
        "type": "passive",
        "description": "Bootstrap supply voltage for the internal high-side driver; connect a 220 nF high-quality capacitor between this pin and SW."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_out",
        "description": "Internal 5 V LDO output powering the internal control circuitry; do not load externally, connect a 1 µF high-quality capacitor between VCC and PGND, usable as logic supply for the regulator functions."
      },
      {
        "number": "5",
        "name": "RT",
        "type": "input",
        "description": "Frequency programming input: connect to VCC for 400 kHz, to AGND for 2.1 MHz, or to an RT timing resistor to AGND; must not be left floating."
      },
      {
        "number": "6",
        "name": "VSEL",
        "type": "input",
        "description": "Output voltage selection input: VCC for 5 V, AGND for 3.3 V, or 10 kΩ to AGND for adjustable output; must not be left floating."
      },
      {
        "number": "7",
        "name": "SYNC/MODE",
        "type": "input",
        "description": "Mode selection and synchronization input: VCC for FPWM, AGND for auto mode, or an external synchronization clock."
      },
      {
        "number": "8",
        "name": "RESET",
        "type": "output",
        "description": "Open-drain power-good flag output (high = power good, low = power bad), pulled up through a current-limiting resistor to a suitable supply; pulled low when EN is low; may be left open if unused."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the regulator: connect to the output capacitor for fixed 5 V or 3.3 V, or to the feedback divider tap for adjustable output; do not float or ground."
      },
      {
        "number": "10",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground and ground reference for internal reference and logic; all electrical parameters are measured to this pin; connect to system ground on the PCB."
      },
      {
        "number": "11",
        "name": "EN",
        "type": "input",
        "description": "Regulator enable input (high = on, low = off); can be connected directly to VIN; must not be left floating."
      },
      {
        "number": "12",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply to the regulator (3.5 V to 36 V recommended); connect a high-quality bypass capacitor directly between this pin and PGND."
      },
      {
        "number": "13",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply to the regulator (second VIN pin, same net as pin 12); bypass directly to PGND."
      },
      {
        "number": "14",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection to the device circuitry."
      },
      {
        "number": "15",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground terminal; connect to system ground and AGND, with short wide traces to the bypass capacitors."
      },
      {
        "number": "16",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground terminal (second PGND pin, same net as pin 15); connect to system ground and AGND."
      },
      {
        "number": "17",
        "name": "DAP",
        "type": "power_in",
        "description": "Exposed PowerPAD providing electrical ground and heat-sink connection; solder directly to the system ground plane."
      }
    ],
    "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",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet text is the LM63615-Q1/LM63625-Q1 document (SNVSB55 / ZHCSKE1G). LM63635DQPWPRQ1 appea; The datasheet gives pin types only as A/P/G letters. The KiCad ERC types were inferred: SW as power_; The pin table prints the exposed pad as pin 17, and the package drawing shows it as (17)."
        ],
        "pages_sent": 40,
        "cost_usd": 0.3585,
        "at": "2026-10-27T00:56:21"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm63635dqpwprq1.pdf",
        "pages": 59,
        "sha256": "7d26ece346632163",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7982746831c0bd23f4690608869ad67776faae5c762fb0376666126a3998921b",
        "checked": "2026-10-27",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "HTSSOP-16-EP",
      "Category": "Power Supply Chip",
      "Pins": "17"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "7d26ece346632163ced7aa3b62456955b23af7ff16e16c4af47d5fd136b839b9",
      "rows": [
        {
          "name": "VIN to PGND (HTSSOP)",
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        {
          "name": "EN to AGND (HTSSOP)",
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        {
          "name": "SYNC/MODE to AGND",
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        {
          "name": "VOUT_SEL and RT to AGND",
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        {
          "name": "RESET to AGND",
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        {
          "name": "FB to AGND (fixed VOUT mode)",
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        {
          "name": "FB to AGND (adjustable VOUT mode)",
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          "kind": "absolute_maximum",
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          "typ": null,
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        {
          "name": "AGND to PGND",
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          "min": -0.3,
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        {
          "name": "SW to PGND (HTSSOP)",
          "symbol": "SW",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -6,
          "typ": null,
          "max": 40,
          "conditions": "Transient less than 10 ns, HTSSOP package",
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        {
          "name": "BOOT to SW",
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          "min": -0.3,
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        },
        {
          "name": "VCC to AGND",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
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        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
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        {
          "name": "VIN to PGND",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": 36,
          "conditions": "TJ -40°C to 150°C",
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        {
          "name": "EN",
          "symbol": "EN",
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          "unit": "V",
          "min": 0,
          "typ": null,
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        {
          "name": "SYNC/MODE to AGND",
          "symbol": "SYNC/MODE",
          "kind": "recommended_operating",
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          "max": 5,
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          "name": "RESET",
          "symbol": "RESET",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 5,
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        {
          "name": "VOUT",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 1,
          "typ": null,
          "max": 20,
          "conditions": "",
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        {
          "name": "VCC",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.25,
          "conditions": "",
          "source_page": 6,
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        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 43.1,
          "max": null,
          "conditions": "HTSSOP (PWP) 16-pin",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 35.4,
          "max": null,
          "conditions": "HTSSOP (PWP) 16-pin",
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        },
        {
          "name": "Junction-to-board thermal resistance",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 18.5,
          "max": null,
          "conditions": "HTSSOP (PWP) 16-pin",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-top characterization parameter",
          "symbol": "ΨJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 0.9,
          "max": null,
          "conditions": "HTSSOP (PWP) 16-pin",
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        {
          "name": "Junction-to-board characterization parameter",
          "symbol": "ΨJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 18.5,
          "max": null,
          "conditions": "HTSSOP (PWP) 16-pin",
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        {
          "name": "Junction-to-case (bottom) thermal resistance",
          "symbol": "RθJC(bot)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 4.5,
          "max": null,
          "conditions": "HTSSOP (PWP) 16-pin",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Non-switching input current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 23,
          "max": 40,
          "conditions": "VEN = 3.3V, VFB = 1.2× regulation value",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Shutdown quiescent current",
          "symbol": "ISD",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 5.3,
          "max": 10,
          "conditions": "VEN = 0",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Pull-down current at SW on OVP",
          "symbol": "IPOR",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.5,
          "typ": 1.5,
          "max": 2.5,
          "conditions": "VEN = 0V, VSW = 5V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Precision enable high level",
          "symbol": "VEN-H",
          "kind": "electrical",
          "unit": "V",
          "min": 1.425,
          "typ": 1.5,
          "max": 1.575,
          "conditions": "VEN rising",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Enable input leakage current",
          "symbol": "ILKG-EN",
          "kind": "electrical",
          "unit": "nA",
          "min": -100,
          "typ": 0.2,
          "max": 150,
          "conditions": "VEN = 13.5V, HTSSOP package",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Resistor range for adjustable output voltage selection",
          "symbol": "RSEL-ADJ",
          "kind": "electrical",
          "unit": "kΩ",
          "min": 8,
          "typ": null,
          "max": 50,
          "conditions": "",
          "source_page": 8,
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        },
        {
          "name": "Internal VCC voltage",
          "symbol": "VCC",
          "kind": "electrical",
          "unit": "V",
          "min": 4.75,
          "typ": 5,
          "max": 5.25,
          "conditions": "6V ≤ VIN ≤ max operating VIN",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "VCC clamp voltage",
          "symbol": "VCCM",
          "kind": "electrical",
          "unit": "V",
          "min": 5.25,
          "typ": 5.55,
          "max": 5.8,
          "conditions": "1mA supplied to VCC",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Feedback voltage (adjustable)",
          "symbol": "VFB_ADJ",
          "kind": "electrical",
          "unit": "V",
          "min": 0.985,
          "typ": 1,
          "max": 1.015,
          "conditions": "VIN = 3.5V – max operating VIN",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Feedback voltage (5V)",
          "symbol": "VFB_5V",
          "kind": "electrical",
          "unit": "V",
          "min": 4.925,
          "typ": 5,
          "max": 5.075,
          "conditions": "VIN = 5.5V – max operating VIN",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Feedback voltage (3.3V)",
          "symbol": "VFB_3p3V",
          "kind": "electrical",
          "unit": "V",
          "min": 3.25,
          "typ": 3.3,
          "max": 3.35,
          "conditions": "VIN = 3.8V – max operating VIN",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "FB input leakage current (adjustable)",
          "symbol": "IFB_ADJ",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 0.2,
          "max": 100,
          "conditions": "FB = 1.0V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "FB input leakage current (5V)",
          "symbol": "IFB_5V",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 2.89,
          "max": 3.4,
          "conditions": "FB = 5.0V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "FB input leakage current (3.3V)",
          "symbol": "IFB_3p3V",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1.67,
          "max": 2,
          "conditions": "FB = 3.3V",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Hiccup threshold on FB pin",
          "symbol": "VHICCUP",
          "kind": "electrical",
          "unit": "%",
          "min": 37,
          "typ": 42,
          "max": 47,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "RESET upper threshold (rising FB voltage)",
          "symbol": "VRESET-HIGH",
          "kind": "electrical",
          "unit": "%",
          "min": 110,
          "typ": 112,
          "max": 115,
          "conditions": "Rising FB voltage",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "RESET lower threshold (falling FB voltage)",
          "symbol": "VRESET-LOW",
          "kind": "electrical",
          "unit": "%",
          "min": 91,
          "typ": 93,
          "max": 95,
          "conditions": "Falling FB voltage",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "RESET hysteresis",
          "symbol": "VRESET-HYS",
          "kind": "electrical",
          "unit": "%",
          "min": 1.1,
          "typ": 1.8,
          "max": 2.5,
          "conditions": "FB voltage",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Minimum input voltage for proper PG function",
          "symbol": "VRESET_VALID",
          "kind": "electrical",
          "unit": "V",
          "min": 0.7,
          "typ": 1.04,
          "max": 1.25,
          "conditions": "VRESET less than 0.4V, 10kΩ pullup to external 5V",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "RESET on-resistance (VEN = 5.0V)",
          "symbol": "RRESET",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 60,
          "max": 150,
          "conditions": "VEN = 5.0V, 1mA pullup current",
          "source_page": 9,
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