LMR33640DDDAR

{
  "slug": "lmr33640dddar",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, SOIC-8-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lmr33640dddar",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lmr33640dddar.kicad_sym",
    "lmr33640dddar.kicad_mod",
    "lmr33640dddar.glb",
    "lmr33640dddar.step",
    "lmr33640dddar.lbr",
    "docs/hero.png",
    "docs/lmr33640dddar-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "LMR33640DDDAR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8-EP",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lmr33640",
    "parts": {
      "symbol": "lmr33640dddar.kicad_sym",
      "footprint": "lmr33640dddar.kicad_mod",
      "model_3d": "lmr33640dddar-etched.glb",
      "model_3d_plain": "lmr33640dddar.glb",
      "model_3d_step": "lmr33640dddar-etched.step",
      "model_3d_step_plain": "lmr33640dddar.step",
      "lbr": "lmr33640dddar.lbr"
    },
    "distributor_links": {
      "lcsc": "C1852154"
    },
    "pins": [
      {
        "number": "1",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground terminal; connect to system ground, AGND, and bypass capacitor with short wide traces."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Regulator input supply operating from 3.8 V to 36 V; connect high-quality bypass capacitors directly to this pin and PGND."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable control input with rising threshold of 1.26 V enabling switching and falling threshold of 0.3 V disabling device; do not float."
      },
      {
        "number": "4",
        "name": "PG",
        "type": "tri_state",
        "description": "Open-drain power-good output indicating regulation status with upper threshold at 107% of FB and lower at 94% of FB; pulls low on fault or during soft start."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input connected to output voltage divider tap point with nominal reference voltage of 1 V; do not float or ground."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_out",
        "description": "Internal 5-V LDO output regulated from 4.75 V to 5.25 V supplying internal control circuits; connect 1-µF capacitor to PGND and do not load externally."
      },
      {
        "number": "7",
        "name": "BOOT",
        "type": "power_out",
        "description": "Bootstrap supply for internal high-side gate driver with minimum undervoltage threshold of 2.2 V; connect 100-nF capacitor from this pin to SW."
      },
      {
        "number": "8",
        "name": "SW",
        "type": "output",
        "description": "Switching node driven by internal MOSFETs with voltage rating from -0.3 V to 38 V, supporting transients to -3.5 V under 100 ns; connect to power inductor."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: AGND thermal pad lacks a standard pin number designation in datasheet; represented as 'PAD' in numbe",
          "exposed pad 9 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 44,
        "cost_usd": 0.4327,
        "at": "2026-09-23T08:28:20"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lmr33640",
        "pages": 44,
        "sha256": "6df39cb52faaed45",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lmr33640dddar.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.55
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lmr33640dddar-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.55
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d29b16ee84ccaf30f82dd68f46be1576869a961c172ce37e04c0606a6604b0fd",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}