LT1521CS8#PBF

{
  "slug": "lt1521cs8-pbf",
  "version": "0.1.0",
  "type": "component",
  "description": "Analog Devices Linear Voltage Regulators (LDO), SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management ics",
    "lt1521cs8#pbf",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lt1521cs8-pbf.kicad_sym",
    "lt1521cs8-pbf.kicad_mod",
    "lt1521cs8-pbf.glb",
    "lt1521cs8-pbf.step",
    "lt1521cs8-pbf.lbr",
    "docs/hero.png",
    "docs/lt1521cs8-pbf-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lt1521cs8-pbf-hero.glb",
    "lt1521cs8-pbf-hero.overlay.json",
    "lt1521cs8-pbf-etched.glb"
  ],
  "component": {
    "mpn": "LT1521CS8#PBF",
    "manufacturer": "Analog Devices",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Power Management ICs",
    "subcategory": "Linear Voltage Regulators (LDO)",
    "datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/1521335fb.pdf",
    "parts": {
      "symbol": "lt1521cs8-pbf.kicad_sym",
      "footprint": "lt1521cs8-pbf.kicad_mod",
      "model_3d": "lt1521cs8-pbf-hero.glb",
      "model_3d_plain": "lt1521cs8-pbf-etched.glb",
      "model_3d_step": "lt1521cs8-pbf-etched.step",
      "model_3d_step_plain": "lt1521cs8-pbf.step",
      "lbr": "lt1521cs8-pbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C664149",
      "digikey": "LT1521CS8#PBF-ND",
      "mouser": "584-LT1521CS8#PBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T12:40:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LT1521CS8#PBF-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "584-LT1521CS8#PBF",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated output supplying the load, requiring a minimum 1.5µF output capacitor to prevent oscillation."
      },
      {
        "number": "2",
        "name": "ADJ",
        "type": "input",
        "description": "Error-amplifier input on the adjustable LT1521 with 3.75V reference, 50nA bias current into the pin, internally clamped to 6V and -0.6V, giving a 3.75V to 20V output range (pin 2 is SENSE on the fixed -3/-3.3/-5 versions)."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, one of pins 3, 6 and 7 that are ground on the S8 package."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "5",
        "name": "SHDN",
        "type": "input",
        "description": "Active-low shutdown input, pulled low to turn the output off, internally clamped to 7V and -0.6V, may be left open for output on (on above 2.80V max, off below 0.25V min threshold, pull-up current limited to 5mA)."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, one of pins 3, 6 and 7 that are ground on the S8 package."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, one of pins 3, 6 and 7 that are ground on the S8 package."
      },
      {
        "number": "8",
        "name": "IN",
        "type": "power_in",
        "description": "Power input, withstands reverse voltage of 20V with no reverse current flow, and should be bypassed with 1µF to 10µF if far from the main input filter capacitor."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: S8 pin-to-name mapping was inferred from the flattened top-view text on page 2; it agrees with the p; LT1521CS8 is the adjustable version, so pin 2 is ADJ. It is SENSE on the fixed-voltage -3/-3.3/-5 pa"
        ],
        "pages_sent": 16,
        "cost_usd": 0.1895,
        "at": "2026-10-31T12:39:53"
      },
      "datasheet": {
        "url": "https://www.analog.com/media/en/technical-documentation/data-sheets/1521335fb.pdf",
        "pages": 16,
        "sha256": "a580c39ec72785d9",
        "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": "lt1521cs8-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": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lt1521cs8-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": "27e9707c680bddbcf8a4bed6c6415e01ba06fcbf7e19ce2ac30cea004034980c",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ],
    "package_dims": {
      "package_code": "S8",
      "source_page": 14,
      "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,
          6.197
        ]
      },
      "e": {
        "nom_mm": 1.27,
        "range_mm": [
          null,
          null
        ]
      },
      "A": {
        "nom_mm": 1.549,
        "range_mm": [
          1.346,
          1.752
        ]
      },
      "source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
      "model_check": {
        "file": "lt1521cs8-pbf.step",
        "verdict": "PASS",
        "reasons": [
          "height and body within the datasheet's package drawing"
        ],
        "by": "factory/package_fit.py"
      }
    }
  }
}