LP3981IMM-3.0

{
  "slug": "lp3981imm-3-0",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, VSSOP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "lp3981imm-3.0",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lp3981imm-3-0.kicad_sym",
    "lp3981imm-3-0.kicad_mod",
    "lp3981imm-3-0.glb",
    "lp3981imm-3-0.step",
    "lp3981imm-3-0.lbr",
    "docs/hero.png",
    "docs/lp3981imm-3-0-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lp3981imm-3-0-hero.glb",
    "lp3981imm-3-0-hero.overlay.json"
  ],
  "component": {
    "mpn": "LP3981IMM-3.0",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lp3981",
    "parts": {
      "symbol": "lp3981imm-3-0.kicad_sym",
      "footprint": "lp3981imm-3-0.kicad_mod",
      "model_3d": "lp3981imm-3-0-hero.glb",
      "model_3d_plain": "lp3981imm-3-0.glb",
      "model_3d_step": "lp3981imm-3-0-etched.step",
      "model_3d_step_plain": "lp3981imm-3-0.step",
      "lbr": "lp3981imm-3-0.lbr"
    },
    "distributor_links": {
      "lcsc": "C2865898",
      "digikey": "LP3981IMM-3.0TR-ND",
      "mouser": "926-LP3981IMM-30"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T23:24:03Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LP3981IMM-3.0TR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LP3981IMM-30",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OUT",
        "type": "power_out",
        "description": "LDO regulated output voltage, rated for up to 300 mA output current per the Features list."
      },
      {
        "number": "2",
        "name": "IN",
        "type": "power_in",
        "description": "LDO input voltage, with a recommended operating VIN range of 2.7 V to 6 V (absolute maximum -0.3 V to 6.5 V)."
      },
      {
        "number": "3",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "4",
        "name": "OUT-SENSE",
        "type": "output",
        "description": "Voltage sense pin that must be connected to OUT for proper operation."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Common ground for the LDO; all voltages are referenced to this pin."
      },
      {
        "number": "6",
        "name": "BYPASS",
        "type": "passive",
        "description": "Optional bypass capacitor connection for noise reduction, typically a 0.033 µF capacitor to ground."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Logic enable input, active high; VEN must stay between 0 and VIN."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      }
    ],
    "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 says GND should 'Connect to PAD', but that refers to the WSON exposed therma; The datasheet gives the pin type as O (OUT) and I (IN) without a KiCad class. I mapped IN to power_i; Input range is stated inconsistently. Features and Power Supply Recommendations say 2.5 V to 6 V, wh"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0674,
        "at": "2026-10-08T23:22:56"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lp3981",
        "pages": 27,
        "sha256": "f55a271103f3d9d3",
        "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": [
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        "file": "lp3981imm-3-0.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": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lp3981imm-3-0-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": "8c2fa1b4378588dc98149994df6b6e96fe85f622f4bd426c9994ae4989eb031f",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}