LMR61428XMMX

{
  "slug": "lmr61428xmmx",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, VSSOP-8-0.65mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "lmr61428xmmx",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lmr61428xmmx.kicad_sym",
    "lmr61428xmmx.kicad_mod",
    "lmr61428xmmx.glb",
    "lmr61428xmmx.step",
    "lmr61428xmmx.lbr",
    "docs/hero.png",
    "docs/lmr61428xmmx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lmr61428xmmx-hero.glb",
    "lmr61428xmmx-hero.overlay.json"
  ],
  "component": {
    "mpn": "LMR61428XMMX",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8-0.65mm",
    "pin_count": 8,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lmr61428",
    "parts": {
      "symbol": "lmr61428xmmx.kicad_sym",
      "footprint": "lmr61428xmmx.kicad_mod",
      "model_3d": "lmr61428xmmx-hero.glb",
      "model_3d_plain": "lmr61428xmmx.glb",
      "model_3d_step": "lmr61428xmmx-etched.step",
      "model_3d_step_plain": "lmr61428xmmx.step",
      "lbr": "lmr61428xmmx.lbr"
    },
    "distributor_links": {
      "lcsc": "C2072491"
    },
    "distributor_check": {
      "checked_at": "2026-10-07T08:01:10Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground return for power stage circuits."
      },
      {
        "number": "2",
        "name": "EN",
        "type": "input",
        "description": "Active-low shutdown input; regulator disabled below 0.15×VDD, enabled above 0.7×VDD; absolute maximum rating -0.5V to 10V."
      },
      {
        "number": "3",
        "name": "FREQ",
        "type": "input",
        "description": "Frequency programming input; external resistor connected between FREQ and VDD sets switching frequency from 300kHz to 2MHz; 100µA maximum current rating."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input from resistor divider for regulated output voltage 1.24V to 14V; typical pin voltage 1.24V; absolute maximum rating -0.5V to 10V."
      },
      {
        "number": "5",
        "name": "SGND",
        "type": "power_in",
        "description": "Signal ground for feedback and control circuits."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply input for internal control circuitry; operating range 2.5V to 5V; absolute maximum rating -0.5V to 10V."
      },
      {
        "number": "7",
        "name": "BOOT",
        "type": "power_in",
        "description": "Bootstrap supply input for MOSFET gate driver; operating range 0V to 10V; absolute maximum rating -0.5V to 10V."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Drain of internal N-channel MOSFET power switch; boost converter switching node connecting to inductor and freewheeling diode; absolute maximum rating -0.5V to 14.5V with 2.85A peak switch current limit."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: PGND (Pin 1) and SGND (Pin 5) ground reference pins do not have explicit absolute maximum voltage ra"
        ],
        "pages_sent": 22,
        "cost_usd": 0.1317,
        "at": "2026-10-07T08:00:55"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lmr61428",
        "pages": 22,
        "sha256": "d55e65d8766ee830",
        "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": "lmr61428xmmx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2.0,
          0.85
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "353552981eef35cb93635057d4aeb89aef22648c77af6fd095e328bfe6b834bd",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lmr61428xmmx-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2.0,
          0.85
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0d10f90399f477b3b343a7d10bd4ed106ec492a5d8bbf72faab87ee30d0ac45f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}