LM34914SD

{
  "slug": "lm34914sd",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, WSON-10-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "lm34914sd",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm34914sd.kicad_sym",
    "lm34914sd.kicad_mod",
    "lm34914sd.glb",
    "lm34914sd.step",
    "lm34914sd.lbr",
    "docs/hero.png",
    "docs/lm34914sd-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm34914sd-hero.glb",
    "lm34914sd-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM34914SD",
    "manufacturer": "Texas Instruments",
    "package": "WSON-10-EP(3x3)",
    "pin_count": 11,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm34914",
    "parts": {
      "symbol": "lm34914sd.kicad_sym",
      "footprint": "lm34914sd.kicad_mod",
      "model_3d": "lm34914sd-hero.glb",
      "model_3d_plain": "lm34914sd.glb",
      "model_3d_step": "lm34914sd-etched.step",
      "model_3d_step_plain": "lm34914sd.step",
      "lbr": "lm34914sd.lbr"
    },
    "distributor_links": {
      "lcsc": "C2071352",
      "digikey": "LM34914SDTR-ND",
      "mouser": "926-LM34914SD"
    },
    "distributor_check": {
      "checked_at": "2026-10-12T03:17:27Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM34914SDTR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LM34914SD",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Switching node, internally connected to the buck switch source; connect to the inductor, catch diode, and bootstrap capacitor."
      },
      {
        "number": "2",
        "name": "BST",
        "type": "passive",
        "description": "Bootstrap pin; connect a 0.022 µF capacitor from SW to this pin, which is charged each off-time through an internal diode."
      },
      {
        "number": "3",
        "name": "ISEN",
        "type": "input",
        "description": "Current sense input; the re-circulating current flows out of this pin to the free-wheeling diode, and the valley current limit is sensed here."
      },
      {
        "number": "4",
        "name": "SGND",
        "type": "power_in",
        "description": "Sense ground; re-circulating current flows into this pin through the current sense resistor."
      },
      {
        "number": "5",
        "name": "RTN",
        "type": "power_in",
        "description": "Circuit ground for all internal circuitry other than the current limit detection."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "Feedback input from the regulated output to the regulation and over-voltage comparators; the regulation level is 2.5 V."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start; an internal current source charges an external capacitor to 2.5 V to provide the soft-start function."
      },
      {
        "number": "8",
        "name": "RON/SD",
        "type": "input",
        "description": "On-time control and shutdown; an external resistor from VIN to this pin sets the buck switch on-time, and grounding this pin shuts down the regulator."
      },
      {
        "number": "9",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the start-up regulator, nominally regulated at 7.0 V; connect a 0.1 µF capacitor to RTN, and an external 8 V to 14 V supply may be applied to reduce internal dissipation."
      },
      {
        "number": "10",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage; operating input range is 8.0 V to 40 V."
      },
      {
        "number": "11",
        "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: Pin types are KiCad ERC classes chosen from the pin function descriptions; the datasheet itself give; The exposed pad (EP) is not numbered in the pin table; it is listed as EP and recommended to be tied; Ordering part LM34914SD/NOPB is in the WSON (DSC) 10-pin, 3x3 mm package per the package addendum on",
          "exposed pad 11 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 6,
        "cost_usd": 0.035,
        "at": "2026-10-12T03:17:14"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm34914",
        "pages": 23,
        "sha256": "b44707b706e6a9aa",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 11,
        "described": 11,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "lm34914sd.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.0,
          2.98,
          1.02
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1b436233b33ebba84da89538e97b0062d5b95e5ae0b484c46c569cb67274a3a5",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm34914sd-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2bb93b573a5a5968b02d932d6a11e3ec75e57256e051838a8839b50f60feeed3",
        "checked": "2026-10-12",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}