LM34910CSDX

{
  "slug": "lm34910csdx",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, WSON-10-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "lm34910csdx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm34910csdx.kicad_sym",
    "lm34910csdx.kicad_mod",
    "lm34910csdx.glb",
    "lm34910csdx.step",
    "lm34910csdx.lbr",
    "docs/hero.png",
    "docs/lm34910csdx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm34910csdx-hero.glb",
    "lm34910csdx-hero.overlay.json"
  ],
  "component": {
    "mpn": "LM34910CSDX",
    "manufacturer": "Texas Instruments",
    "package": "WSON-10-EP(4x4)",
    "pin_count": 11,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm34910c",
    "parts": {
      "symbol": "lm34910csdx.kicad_sym",
      "footprint": "lm34910csdx.kicad_mod",
      "model_3d": "lm34910csdx-hero.glb",
      "model_3d_plain": "lm34910csdx.glb",
      "model_3d_step": "lm34910csdx-etched.step",
      "model_3d_step_plain": "lm34910csdx.step",
      "lbr": "lm34910csdx.lbr"
    },
    "distributor_links": {
      "lcsc": "C2073008"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T00:36:37Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "SW",
        "type": "output",
        "description": "Internally connected to the buck switch source; connect to the external inductor, diode, and boost capacitor."
      },
      {
        "number": "2",
        "name": "BST",
        "type": "power_out",
        "description": "Boot-strap pin for the gate-drive capacitor; a 0.022 µF capacitor connects from SW to this pin and is charged by an internal diode during the off-time."
      },
      {
        "number": "3",
        "name": "ISEN",
        "type": "input",
        "description": "Current sense input; the current sense resistor connects from this pin to SGND, and the current limit is set at 1.25A."
      },
      {
        "number": "4",
        "name": "SGND",
        "type": "power_in",
        "description": "Sense ground; re-circulating current flows into this pin to the current sense resistor."
      },
      {
        "number": "5",
        "name": "RTN",
        "type": "power_in",
        "description": "Ground for all internal circuitry other than the current limit detection."
      },
      {
        "number": "6",
        "name": "FB",
        "type": "input",
        "description": "Feedback input connected internally to the regulation and over-voltage comparators; the regulation level is 2.5V."
      },
      {
        "number": "7",
        "name": "SS",
        "type": "passive",
        "description": "An internal 11.5 µA current source charges an external soft-start capacitor to 2.5V to provide the soft-start function."
      },
      {
        "number": "8",
        "name": "RON/SD",
        "type": "input",
        "description": "An external resistor from VIN to this pin sets the buck switch on-time; grounding this pin shuts down the regulator."
      },
      {
        "number": "9",
        "name": "VCC",
        "type": "power_out",
        "description": "Output of the start-up regulator, nominally regulated to 7.0V; an external 8V-14V auxiliary voltage can be connected to this pin to reduce internal dissipation."
      },
      {
        "number": "10",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage; nominal input range is 8.0V to 50V."
      },
      {
        "number": "11",
        "name": "EP (exposed pad)",
        "type": "passive",
        "description": "Exposed thermal pad on the package bottom, which should be soldered to a ground plane for heat dissipation and is internally connected to the IC substrate."
      }
    ],
    "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 datasheet pin table lists only pins 1-10. The exposed pad is numbered 11 only in the package out; The datasheet does not give KiCad ERC types. Types for SW, BST, SS and VCC were inferred from their ; SGND and RTN are ground pins and are typed power_in per the GND rule, although the datasheet describ"
        ],
        "pages_sent": 21,
        "cost_usd": 0.0847,
        "at": "2026-10-09T00:36:25"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm34910c",
        "pages": 21,
        "sha256": "9316b05405136b7c",
        "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": [
      {
        "file": "lm34910csdx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          3.95,
          0.8
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ef3c2f392fea7049285bfc942095cbd03d5bb47d74597dd80d1bc887363be656",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm34910csdx-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4.0,
          3.95,
          0.8
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1ddbb832214937be989a1baae902502e86a234d315dd8b87a0295ebe0666307f",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}