REF3318AIDBZR

{
  "schema_version": 1,
  "type": "component",
  "slug": "ref3318aidbzr",
  "title": "REF3318AIDBZR",
  "brief": "Texas Instruments Voltage Reference, SOT-23. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "ref3318aidbzr"
  ],
  "component": {
    "mpn": "REF3318AIDBZR",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ref3318aidbzr.pdf",
    "parts": {
      "symbol": "ref3318aidbzr.kicad_sym",
      "footprint": "ref3318aidbzr.kicad_mod",
      "model_3d": "ref3318aidbzr-etched.glb",
      "model_3d_plain": "ref3318aidbzr.glb",
      "model_3d_step": "ref3318aidbzr-etched.step",
      "model_3d_step_plain": "ref3318aidbzr.step",
      "lbr": "ref3318aidbzr.lbr"
    },
    "distributor_links": {
      "digikey": "296-46184-2-ND",
      "lcsc": "C115877"
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Input supply voltage. Must be at least VOUT + 200 mV up to 5.5 V (absolute max 7.5 V). Bypass to GND with a low-ESR capacitor per the power-supply recommendations."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "output",
        "description": "Reference output voltage (1.8 V nominal for REF3318). Sources or sinks up to ±5 mA (30 mA max). Requires a 0.1 µF to 10 µF load capacitor for stability; short-circuit current limited to ~35 mA typ."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Common return for input supply and output reference voltage."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ref3318aidbzr.pdf",
        "pages": 37,
        "sha256": "4f68e657e0bb2b6e",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -0.9375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23@sha256:0d88c86c1b6d8c1a",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "ref3318aidbzr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd5d1711204e1d8d26cd11490923bd84340820baa69538c385a4300ec2539bc0",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ref3318aidbzr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3,
          1.2
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "33784b40c2bd601b5671608d393fa4f944272f890d7a5b95dfde560a060833fe",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23",
      "Category": "PMIC",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4f68e657e0bb2b6e",
      "rows": [
        {
          "name": "Initial accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -0.15,
          "typ": null,
          "max": 0.15,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output voltage temperature drift",
          "symbol": "dVOUT/dT",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": 9,
          "max": 30,
          "conditions": "–40°C to 85°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output voltage temperature drift",
          "symbol": "dVOUT/dT",
          "kind": "temperature_coefficient",
          "unit": "ppm/°C",
          "min": null,
          "typ": 8,
          "max": 30,
          "conditions": "–40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVO(ΔVI)",
          "kind": "voltage_coefficient",
          "unit": "ppm/V",
          "min": -50,
          "typ": 6,
          "max": 50,
          "conditions": "VIN = VOUT + 200 mV to 5.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "ΔVO(ΔIL)",
          "kind": "electrical",
          "unit": "ppm/mA",
          "min": -50,
          "typ": 6,
          "max": 50,
          "conditions": "VIN = VOUT + 200 mV",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Minimum dropout voltage",
          "symbol": "VIN – VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 110,
          "max": 160,
          "conditions": "ILOAD = ±5 mA",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Capacitive load",
          "symbol": "",
          "kind": "electrical",
          "unit": "μF",
          "min": 0.1,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current IQ",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 3.9,
          "max": 5,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current IQ",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 4.4,
          "max": 6.5,
          "conditions": "–40°C to 85°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current IQ",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 4.8,
          "max": 8.5,
          "conditions": "–40°C to 125°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Specified supply voltage range VS",
          "symbol": "VS",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating supply voltage range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "ILOAD = 0 mA",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Specified temperature range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -50,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 7.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output short-circuit current",
          "symbol": "ISC",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 180,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -50,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply input voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output current range",
          "symbol": "IOUT",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": -30,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance (DBZ, SOT-23)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 313.1,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance (DBZ, SOT-23)",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 144,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board thermal resistance (DBZ, SOT-23)",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 109.3,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-top characterization parameter (DBZ, SOT-23)",
          "symbol": "ψJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 18.2,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board characterization parameter (DBZ, SOT-23)",
          "symbol": "ψJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 107.9,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ref3318aidbzr"
  ],
  "discovery_pitch": "REF3318AIDBZR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ref3318aidbzr.kicad_sym",
    "ref3318aidbzr.kicad_mod",
    "ref3318aidbzr.glb",
    "ref3318aidbzr.step",
    "ref3318aidbzr-etched.step",
    "ref3318aidbzr.lbr",
    "docs/hero.png",
    "docs/ref3318aidbzr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "REF3318AIDBZR",
      "kind": "packaging"
    },
    {
      "mpn": "REF3318AIDBZT",
      "kind": "unknown"
    },
    {
      "mpn": "REF3318AIDBZRIDCKR",
      "kind": "packaging"
    },
    {
      "mpn": "REF3318AIDBZRIDCKT",
      "kind": "packaging"
    },
    {
      "mpn": "REF3318AIDBZRIRSER",
      "kind": "packaging"
    },
    {
      "mpn": "REF3318AIDBZRIRSET",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T04:46:01.973Z"
}