LMR51420XDDCR

{
  "slug": "lmr51420xddcr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments DC-DC Converters, SOT-23-6. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lmr51420xddcr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
    "lmr51420xddcr.kicad_sym",
    "lmr51420xddcr.kicad_mod",
    "lmr51420xddcr.glb",
    "lmr51420xddcr.step",
    "lmr51420xddcr.lbr",
    "docs/hero.png",
    "docs/lmr51420xddcr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "LMR51420XDDCR",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589836208961990656",
    "parts": {
      "symbol": "lmr51420xddcr.kicad_sym",
      "footprint": "lmr51420xddcr.kicad_mod",
      "model_3d": "lmr51420xddcr-etched.glb",
      "model_3d_plain": "lmr51420xddcr.glb",
      "model_3d_step": "lmr51420xddcr-etched.step",
      "model_3d_step_plain": "lmr51420xddcr.step",
      "lbr": "lmr51420xddcr.lbr"
    },
    "distributor_links": {
      "lcsc": "C5246146"
    },
    "pins": [
      {
        "number": "1",
        "name": "GND",
        "type": "power_in",
        "description": "Power ground terminal connected to the low-side FET source; must be connected to system ground with the shortest possible path to the input bypass capacitor."
      },
      {
        "number": "2",
        "name": "SW",
        "type": "power_out",
        "description": "Switching output node connected to the high-side FET source and low-side FET drain; connect this pin to the power inductor."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input terminal for internal bias LDO and high-side FET; connect directly to input supply with input bypass capacitors."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback input for voltage regulation through external resistor divider; never short to ground during operation."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Precision enable input for ON/OFF control with HIGH = on and LOW = off; cannot be left floating and allows adjustable UVLO through external resistor divider."
      },
      {
        "number": "6",
        "name": "CB",
        "type": "power_out",
        "description": "Bootstrap capacitor connection for high-side FET gate driver; connect a 100-nF high-quality ceramic capacitor from this pin to the SW pin."
      }
    ],
    "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": [],
        "pages_sent": 33,
        "cost_usd": 0.3091,
        "at": "2026-09-23T11:55:34"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589836208961990656",
        "pages": 33,
        "sha256": "0ad3d2ef438f42ca",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
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        "role": "plain",
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        "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": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lmr51420xddcr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
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        "seat": "z = 0",
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        "sha256": "3407584c297faa617e6fa6421f674a39054f5534c84d2a1614903b03cc470b07",
        "checked": "2026-10-07",
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  }
}