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Ray Set visibility: public 8e60975 16d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "lmr51635xddcr",
  "title": "LMR51635XDDCR",
  "brief": "Texas Instruments DC-DC Converters, TSOT-23-6. 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 management (pmic)",
    "lmr51635xddcr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LMR51635XDDCR",
    "manufacturer": "Texas Instruments",
    "package": "TSOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/gpn/lmr51635",
    "parts": {
      "symbol": "lmr51635xddcr.kicad_sym",
      "footprint": "lmr51635xddcr.kicad_mod",
      "model_3d": "lmr51635xddcr-hero.glb",
      "model_3d_plain": "lmr51635xddcr-etched.glb",
      "model_3d_step": "lmr51635xddcr-etched.step",
      "model_3d_step_plain": "lmr51635xddcr.step",
      "lbr": "lmr51635xddcr.lbr"
    },
    "distributor_links": {
      "lcsc": "C42432812",
      "digikey": "296-LMR51635XDDCRTR-ND"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T19:59:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-LMR51635XDDCRTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to the converter; connect a resistor divider to set the output voltage and never short this terminal to ground during operation."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Precision enable input (high = on, low = off) that must not be floated, can be tied to VIN, and allows an adjustable UVLO with an external resistor divider."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input to the internal bias LDO and high-side FET (4.3V to 60V operating); connect to the input supply with input bypass capacitors CIN directly at this pin and GND."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground connected internally to the source of the low-side FET; connect to system ground and the ground side of CIN and COUT with the shortest possible path to CIN."
      },
      {
        "number": "5",
        "name": "SW",
        "type": "passive",
        "description": "Switching output internally connected to the source of the high-side FET and drain of the low-side FET; connect to the power inductor."
      },
      {
        "number": "6",
        "name": "CB",
        "type": "passive",
        "description": "Bootstrap capacitor connection for the high-side FET driver; connect a high quality 100nF capacitor from this pin to the SW pin."
      }
    ],
    "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: Package hint was TSOT-23-6; the datasheet names the package SOT-23-THIN (DDC), 6 pins, which is what"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0981,
        "at": "2026-10-22T19:58:41"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/gpn/lmr51635",
        "pages": 34,
        "sha256": "e1f7a10d36b45dc9",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lmr51635xddcr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "1007b8f67a3e81e2c5182bfd1fd27afe4d8d3710e0bfa1a14b8a91db8b595eb5",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lmr51635xddcr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          0.95
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "b03038cbb1374fb138348b574a828b7663f99e9d5172baca4a9ce6a58d28d0c4",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "TSOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "appearance": {
      "contacts": {
        "quote": "The SW pin connecting to the inductor must be as short as possible, and just wide enough to carry the load current without excessive heating. Short, thick traces or copper pours (shapes) must be used ",
        "page": 22,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "e1f7a10d36b45dc96764b8719848380f1e1177fdfd6879728942237b4777513c"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "e1f7a10d36b45dc96764b8719848380f1e1177fdfd6879728942237b4777513c",
      "rows": [
        {
          "name": "VIN quiescent current (non-switching)",
          "symbol": "IQ(VIN)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 26,
          "max": 46,
          "conditions": "VEN = 3V, PFM variant only",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VIN UVLO rising threshold",
          "symbol": "VIN_UVLO(R)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4,
          "max": 4.25,
          "conditions": "VIN rising",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VIN shutdown supply current",
          "symbol": "ISD(VIN)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "VEN = 0V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN voltage rising threshold",
          "symbol": "VEN(R)",
          "kind": "electrical",
          "unit": "V",
          "min": 1.103,
          "typ": 1.226,
          "max": 1.349,
          "conditions": "EN rising, enable switching",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN voltage falling threshold",
          "symbol": "VEN(F)",
          "kind": "electrical",
          "unit": "V",
          "min": 0.887,
          "typ": 0.985,
          "max": 1.084,
          "conditions": "EN falling, disable switching",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 0.792,
          "typ": 0.8,
          "max": 0.808,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency, CCM operation",
          "symbol": "fSW1(CCM)",
          "kind": "electrical",
          "unit": "kHz",
          "min": 360,
          "typ": 400,
          "max": 440,
          "conditions": "\"X\" version, VIN = 24V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency dithering",
          "symbol": "FDither",
          "kind": "electrical",
          "unit": "%",
          "min": -8.5,
          "typ": null,
          "max": 8.5,
          "conditions": "PFM option, frequency dithering over center frequency",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-side peak current limit",
          "symbol": "IHS_PK(OC)",
          "kind": "electrical",
          "unit": "A",
          "min": 4.2,
          "typ": 5.1,
          "max": 6,
          "conditions": "3.5A version",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Low-side valley current limit",
          "symbol": "ILS_V(OC)",
          "kind": "electrical",
          "unit": "A",
          "min": 3.2,
          "typ": 4,
          "max": 4.8,
          "conditions": "3.5A version",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input supply current when in regulation",
          "symbol": "ISUPPLY",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 29,
          "max": null,
          "conditions": "VIN = 24V, VOUT = 3.3V, IOUT = 0A, RFBT = 1MΩ, PFM variant",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VIN UVLO falling threshold",
          "symbol": "VIN_UVLO(F)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 3.8,
          "max": null,
          "conditions": "VIN falling",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "VIN UVLO hysteresis",
          "symbol": "VIN_UVLO(H)",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.2,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "EN pin sourcing current post EN rising threshold",
          "symbol": "IEN(P2)",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 10,
          "max": 50,
          "conditions": "VEN = 3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "FB input leakage current",
          "symbol": "IFB(LKG)",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 0.2,
          "max": null,
          "conditions": "VFB = 0.8V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Internal fixed soft-start time",
          "symbol": "tSS",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 4,
          "max": null,
          "conditions": "The time of internal reference to increase from 0.08V to 0.72V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "High-side MOSFET on-resistance",
          "symbol": "RDSON(HS)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 85,
          "max": null,
          "conditions": "ISW = –100mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Low-side MOSFET on-resistance",
          "symbol": "RDSON(LS)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "ISW = 100mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Minimum ON pulse width",
          "symbol": "tON-MIN",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "VIN = 24V, IOUT = 1A",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Maximum ON pulse width",
          "symbol": "tON-MAX",
          "kind": "electrical",
          "unit": "µs",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "VIN = 24V, IOUT = 1A",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Minimum OFF pulse width",
          "symbol": "tOFF-MIN",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "VIN = 24V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Low-side negative current limit",
          "symbol": "ILS(NOC)",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": -3,
          "max": null,
          "conditions": "FPWM option, 3.5A version",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Zero-cross detection current threshold",
          "symbol": "IZC",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "FB pin voltage to trip hiccup mode",
          "symbol": "VHICCUP",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.32,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Time between current-limit hiccup burst",
          "symbol": "tHICCUP",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 85,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown threshold",
          "symbol": "TJ(SD)",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 165,
          "max": null,
          "conditions": "Temperature rising",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown hysteresis",
          "symbol": "TJ(HYS)",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input voltage VIN to GND",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 63,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage EN to GND",
          "symbol": "EN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "Max is VIN + 0.3 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage FB to GND",
          "symbol": "FB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage SW to GND",
          "symbol": "SW",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 63,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage SW to GND transients",
          "symbol": "SW",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -3.5,
          "typ": null,
          "max": 65,
          "conditions": "less than 10ns transients",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage CB to SW",
          "symbol": "CB",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1500,
          "typ": null,
          "max": 1500,
          "conditions": "Human-body model, ANSI/ESDA/JEDEC JS-001",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "ESD CDM",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -750,
          "typ": null,
          "max": 750,
          "conditions": "Charged-device model, ANSI/ESDA/JEDEC JS-002",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage VIN to GND",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.3,
          "typ": null,
          "max": 60,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage EN",
          "symbol": "EN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": null,
          "conditions": "Max is VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input voltage FB",
          "symbol": "FB",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 4.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output voltage VOUT",
          "symbol": "VOUT",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0.8,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output current IOUT (LM51635)",
          "symbol": "IOUT",
          "kind": "recommended_operating",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 3.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
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