LM4121IM5-ADJ

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm4121im5-adj",
  "title": "LM4121IM5-ADJ",
  "brief": "Texas Instruments Voltage Reference, SOT-23-5. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "lm4121im5-adj",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LM4121IM5-ADJ",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm4121",
    "parts": {
      "symbol": "lm4121im5-adj.kicad_sym",
      "footprint": "lm4121im5-adj.kicad_mod",
      "model_3d": "lm4121im5-adj-hero.glb",
      "model_3d_plain": "lm4121im5-adj.glb",
      "model_3d_step": "lm4121im5-adj-etched.step",
      "model_3d_step_plain": "lm4121im5-adj.step",
      "lbr": "lm4121im5-adj.lbr"
    },
    "distributor_links": {
      "lcsc": "C2156490",
      "digikey": "LM4121IM5-ADJTR-ND",
      "mouser": "926-LM4121IM5-ADJ"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T17:00:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LM4121IM5-ADJTR-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LM4121IM5-ADJ",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Adj",
        "type": "input",
        "description": "VOUT Adjust pin for the adjustable option, used with feedback resistors R1 and R2 (keep each below 1 MΩ); its bias current is typically 15 nA and at most 40 nA flowing out of the pin, and the pin is sensitive to noise and capacitive loading."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Negative supply or ground connection for the device; a single-point ground to the LM4121 helps ensure good accuracy at high load currents."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable input that is pulled to the input supply for normal operation; about 6 µA into the pin is required to turn the part on, it must be taken close to GND to turn the output off, a minimum slew rate of about 0.003 V/µs is needed to avoid output glitches, and floating the pin is not recommended."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Positive supply input, specified for 1.8 V ≤ VIN ≤ 12 V, with the input and enable pins rated from −0.3 V to 14 V absolute maximum."
      },
      {
        "number": "5",
        "name": "VOUT",
        "type": "output",
        "description": "Reference output that sources and sinks up to ±5 mA and tolerates indefinite output short-circuit duration."
      }
    ],
    "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: Pin 1 is labeled REF on the 1.25 V option and Adj on the adjustable option. This extraction uses the; The pin is named Enable in the datasheet text. The symbol EN is used here for the KiCad pin name.; Package confirmed: the LM4121IM5-ADJ/NOPB is listed as SOT-23 (DBV), 5 pins, on the package option a"
        ],
        "pages_sent": 23,
        "cost_usd": 0.0683,
        "at": "2026-10-11T17:00:17"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm4121",
        "pages": 23,
        "sha256": "0ca0016b3d710f20",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "lm4121im5-adj.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm4121im5-adj-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "a7f2e0e9320fe1ba335319fc13a4ecc34e196fae83a5c820860e55c3083ebe9b",
        "checked": "2026-10-11",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-5",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm4121im5-adj"
  ],
  "discovery_pitch": "LM4121IM5-ADJ (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm4121im5-adj.kicad_sym",
    "lm4121im5-adj.kicad_mod",
    "lm4121im5-adj.glb",
    "lm4121im5-adj.step",
    "lm4121im5-adj.lbr",
    "docs/hero.png",
    "docs/lm4121im5-adj-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm4121im5-adj-hero.glb",
    "lm4121im5-adj-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}