LM34927MR

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm34927mr",
  "title": "LM34927MR",
  "brief": "Texas Instruments DC-DC Converters, SO-8. 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)",
    "lm34927mr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM34927MR",
    "manufacturer": "Texas Instruments",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm34927",
    "parts": {
      "symbol": "lm34927mr.kicad_sym",
      "footprint": "lm34927mr.kicad_mod",
      "model_3d": "lm34927mr-hero.glb",
      "model_3d_plain": "lm34927mr.glb",
      "model_3d_step": "lm34927mr-etched.step",
      "model_3d_step_plain": "lm34927mr.step",
      "lbr": "lm34927mr.lbr"
    },
    "distributor_links": {
      "lcsc": "C1355638"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T14:33:56Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RTN",
        "type": "power_in",
        "description": "Ground connection of the integrated circuit; the exposed pad must be connected to this pin."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Input voltage with an operating input range of 7.5 V to 100 V; the RON resistor connects between this pin and RON to set on-time."
      },
      {
        "number": "3",
        "name": "UVLO",
        "type": "input",
        "description": "Input to the undervoltage comparator; a resistor divider from VIN to UVLO to GND sets the undervoltage threshold, and pulling it below 0.66 V externally puts the part in shutdown."
      },
      {
        "number": "4",
        "name": "RON",
        "type": "input",
        "description": "On-time control; a resistor between this pin and VIN sets the switch on-time as a function of VIN, with a minimum recommended on-time of 100 ns at maximum input voltage."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin connected to the inverting input of the internal regulation comparator, with a regulation level of 1.225 V."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the internal high-voltage series pass regulator, regulated at 7.6 V, which biases the gate drivers and internal circuitry and requires a 1.0 µF decoupling capacitor."
      },
      {
        "number": "7",
        "name": "BST",
        "type": "input",
        "description": "Bootstrap pin; a 0.01 µF ceramic capacitor is required between BST and SW, charged by VCC through an internal diode when SW is low."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Power switching node that connects to the output inductor and the bootstrap capacitor."
      }
    ],
    "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 user's package hint was SO-8, but the MPN LM34927MR is sold as the 8-pin SO PowerPAD (DDA) packa; The exposed thermal pad (EP) is listed in the pin table without a numeric pin number, so it is not i"
        ],
        "pages_sent": 9,
        "cost_usd": 0.0541,
        "at": "2026-10-08T14:33:30"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm34927",
        "pages": 34,
        "sha256": "d9409c664f8b501b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm34927mr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm34927mr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "7920aa7949757457411b0a780535ab0b9461672dbd03eaa1c9afa2186f5e3e72",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SO-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm34927mr"
  ],
  "discovery_pitch": "LM34927MR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm34927mr.kicad_sym",
    "lm34927mr.kicad_mod",
    "lm34927mr.glb",
    "lm34927mr.step",
    "lm34927mr.lbr",
    "docs/hero.png",
    "docs/lm34927mr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm34927mr-hero.glb",
    "lm34927mr-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}