LT1129IS8-3.3#PBF

{
  "slug": "lt1129is8-3-3-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Pre-ordered Chips, SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "interface ics",
    "lt1129is8-3.3#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lt1129is8-3-3-pbf.kicad_sym",
    "lt1129is8-3-3-pbf.kicad_mod",
    "lt1129is8-3-3-pbf.glb",
    "lt1129is8-3-3-pbf.step",
    "lt1129is8-3-3-pbf.lbr",
    "docs/hero.png",
    "docs/lt1129is8-3-3-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt1129is8-3-3-pbf-hero.glb",
    "lt1129is8-3-3-pbf-hero.overlay.json",
    "lt1129is8-3-3-pbf-etched.glb"
  ],
  "component": {
    "mpn": "LT1129IS8-3.3#PBF",
    "manufacturer": "Analog Devices",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Interface ICs",
    "subcategory": "Pre-ordered Chips",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/112935ff.pdf",
    "parts": {
      "symbol": "lt1129is8-3-3-pbf.kicad_sym",
      "footprint": "lt1129is8-3-3-pbf.kicad_mod",
      "model_3d": "lt1129is8-3-3-pbf-hero.glb",
      "model_3d_plain": "lt1129is8-3-3-pbf-etched.glb",
      "model_3d_step": "lt1129is8-3-3-pbf-etched.step",
      "model_3d_step_plain": "lt1129is8-3-3-pbf.step",
      "lbr": "lt1129is8-3-3-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C662830",
      "digikey": "LT1129IS8-3.3#PBF-ND",
      "mouser": "584-LT1129IS8-3.3PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-30T18:26:17Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT1129IS8-3.3#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT1129IS8-3.3PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OUTPUT",
        "type": "power_out",
        "description": "The output pin supplies power to the load and requires an output capacitor to prevent oscillations; the output pin reverse current is rated at 10mA maximum."
      },
      {
        "number": "2",
        "name": "SENSE",
        "type": "input",
        "description": "For the LT1129-3.3 fixed-voltage version this is the error amplifier input, optimum regulation is obtained when connected to the output pin, and it is internally clamped to -0.6V (one VBE) with a sense pin bias current of 15μA."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; all ground pins are internally connected."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection; this pin is marked NC on the S8 pin configuration."
      },
      {
        "number": "5",
        "name": "SHDN",
        "type": "input",
        "description": "Active-low shutdown pin that turns the output off when pulled low, is internally clamped to 7V and -0.6V, draws 6μA when pulled to ground, can be left open to keep the output on, and pull-up current must be limited to a maximum of 20mA."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; all ground pins are internally connected."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin; all ground pins are internally connected."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin that withstands reverse voltages with respect to ground and the output pin, with an absolute maximum input voltage of ±30V and a recommended 1μF to 10μF bypass capacitor when more than 6 inches from the input filter capacitor."
      }
    ],
    "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 S8 pin numbers were taken from the 'TOP VIEW' drawing on page 2, whose extracted text is out of ; Pin 2 is labeled SENSE/ADJ; for the LT1129-3.3 (this MPN) it is SENSE, and the ADJ function applies ; Pin 4 is printed as NC on the S8 pin configuration, and the datasheet gives no further description f"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0849,
        "at": "2026-10-30T18:26:03"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/112935ff.pdf",
        "pages": 16,
        "sha256": "3bd8354699849a4f",
        "source_tier": "mfr"
      },
      "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": "lt1129is8-3-3-pbf.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt1129is8-3-3-pbf-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "d86f9bb6fc2ab5ba33d3ccdfcb350886228b6ff7861e03c5b3dee6268f47fe32",
        "checked": "2026-10-30",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "S8",
      "source_page": 15,
      "D": {
        "nom_mm": 4.902,
        "range_mm": [
          4.801,
          5.004
        ]
      },
      "E1": {
        "nom_mm": 3.899,
        "range_mm": [
          3.81,
          3.988
        ]
      },
      "E": {
        "nom_mm": 5.994,
        "range_mm": [
          5.791,
          6.198
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.549,
        "range_mm": [
          1.346,
          1.753
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "lt1129is8-3-3-pbf.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}