main
Ray Set visibility: public 463284f 21h ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "lm3671mfx-adj",
  "title": "LM3671MFX-ADJ",
  "brief": "Texas Instruments DC-DC Converters, SOT-23-5. 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)",
    "lm3671mfx-adj",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM3671MFX-ADJ",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm3671.pdf",
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      "digikey": "LM3671MFX-ADJ-ND",
      "mouser": "926-LM3671MFX-ADJ"
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    "distributor_check": {
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
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        "status": "found"
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        "description": "Ground pin for the converter."
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        "number": "3",
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        "type": "input",
        "description": "Digital enable pin: the device is in shutdown mode when the voltage is below 0.4 V and enabled above 1 V, and this pin must not be left floating."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback analog input that connects directly to the output filter capacitor for fixed versions, while the adjustable version requires external resistor dividers since its internal dividers are disabled."
      },
      {
        "number": "5",
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        "type": "output",
        "description": "Switching node connection to the internal PFET switch and NFET synchronous rectifier."
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        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin types are mapped from the datasheet's Type column (Power, Ground, Digital, Analog) to KiCad ERC "
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        "pages_sent": 10,
        "cost_usd": 0.0193,
        "at": "2026-11-06T01:09:52"
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        "pages": 38,
        "sha256": "5fddbe8ad486a080",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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        "file": "lm3671mfx-adj.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-11-06",
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "appearance": {
      "contacts": {
        "quote": "3. Connect the ground pins of the LM3671 and filter capacitors together using generous component-side copper fill as a pseudo-ground plane. Then, connect this to the ground-plane (if one is used) with",
        "page": 21,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "5fddbe8ad486a0804a294b6abfc1e600e9fbe576164021dfb726751d36023f36"
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      "source": "datasheet",
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          "name": "Input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "−40°C to 125°C, see(4)",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Feedback voltage (ADJ) MF PWM mode",
          "symbol": "VFB",
          "kind": "tolerance",
          "unit": "%",
          "min": -4,
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          "max": 4,
          "conditions": "MF, PWM mode, −40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Shutdown supply current",
          "symbol": "ISHDN",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "EN = 0 V, −40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "DC bias current into VIN",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 16,
          "max": 35,
          "conditions": "No load, device is not switching (FB forced higher than programmed output voltage), −40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Pin-pin resistance for PFET",
          "symbol": "RDSON (P)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
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          "max": 500,
          "conditions": "VIN = VGS = 3.6 V",
          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Pin-pin resistance for NFET",
          "symbol": "RDSON (N)",
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          "source_page": 6,
          "source": "datasheet"
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        {
          "name": "Switch peak current limit",
          "symbol": "ILIM",
          "kind": "electrical",
          "unit": "mA",
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          "typ": 1020,
          "max": 1150,
          "conditions": "Open loop, −40°C to 125°C (typ at 25°C open loop)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Logic high input",
          "symbol": "VIH",
          "kind": "electrical",
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          "min": 1,
          "typ": null,
          "max": null,
          "conditions": "−40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Logic low input",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "−40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Enable (EN) input current",
          "symbol": "IEN",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.01,
          "max": 1,
          "conditions": "−40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Internal oscillator frequency",
          "symbol": "ƒOSC",
          "kind": "electrical",
          "unit": "MHz",
          "min": 1.6,
          "typ": 2,
          "max": 2.6,
          "conditions": "PWM Mode, −40°C to 125°C (typ at PWM mode)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "VIN pin voltage to GND",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.2,
          "typ": null,
          "max": 6,
          "conditions": "Absolute maximum, voltage to GND",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "FB, SW, EN pins voltage",
          "symbol": "FB, SW, EN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.2,
          "typ": null,
          "max": null,
          "conditions": "GND − 0.2 to VIN + 0.2 V as printed",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature, TJ-MAX",
          "symbol": "TJ-MAX",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "Absolute maximum",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum lead temperature (soldering, 10 sec.)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "Soldering, 10 sec.",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
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        },
        {
          "name": "Recommended load current",
          "symbol": "",
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          "unit": "mA",
          "min": 0,
          "typ": null,
          "max": 600,
          "conditions": "",
          "source_page": 5,
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          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature, TA",
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          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance (DBV SOT-23)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 165.7,
          "max": null,
          "conditions": "DBV (SOT-23), 5 pins",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board thermal resistance (DBV SOT-23)",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 26.8,
          "max": null,
          "conditions": "DBV (SOT-23), 5 pins",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
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  "discovery_pitch": "LM3671MFX-ADJ (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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