main
Ray Set visibility: public f92e9ac 17d ago
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465466467468469470471472473474475476477478479480481482483484485486487488489490491492493494495496497498499500501502503504505506507508509510511512513514515516517518519520521522523524525526527528529530531532533534535536537538539540541542543544545546547548549550551552553554555556557558559560561562563564565566567568569570571572573574575576577578579580581582583584585586587588589590591592593594595596597598599600601602603604605606607608609610611612613614615616617618619620621622623624625626627628629630631632633634635636637638639640641642643644645646647648649650651652
{
  "schema_version": 1,
  "type": "component",
  "slug": "lp2951cd-3-3r2g",
  "title": "LP2951CD-3.3R2G",
  "brief": "onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. 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)",
    "lp2951cd-3.3r2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LP2951CD-3.3R2G",
    "manufacturer": "onsemi",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907060625227776",
    "parts": {
      "symbol": "lp2951cd-3-3r2g.kicad_sym",
      "footprint": "lp2951cd-3-3r2g.kicad_mod",
      "model_3d": "lp2951cd-3-3r2g-hero.glb",
      "model_3d_plain": "lp2951cd-3-3r2g-etched.glb",
      "model_3d_step": "lp2951cd-3-3r2g-etched.step",
      "model_3d_step_plain": "lp2951cd-3-3r2g.step",
      "lbr": "lp2951cd-3-3r2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C232651",
      "digikey": "LP2951CD-3.3R2GOSTR-ND",
      "mouser": "863-LP2951CD-3.3R2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T02:52:05Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "LP2951CD-3.3R2GOSTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "863-LP2951CD-3.3R2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "Output",
        "type": "power_out",
        "description": "Regulated output of the 100 mA low-dropout regulator, which can supply output currents in excess of 100 mA."
      },
      {
        "number": "2",
        "name": "Sense",
        "type": "input",
        "description": "Sense pin shown on the output side of the block diagram; the datasheet gives no separate electrical limit for it."
      },
      {
        "number": "3",
        "name": "Shutdown",
        "type": "input",
        "description": "Logic-level shutdown input that turns the regulator output off or on."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator."
      },
      {
        "number": "5",
        "name": "Error Output",
        "type": "output",
        "description": "Error output that signals an out-of-regulation condition to external circuitry, or can serve as a microprocessor power-on reset."
      },
      {
        "number": "6",
        "name": "VO Tap",
        "type": "passive",
        "description": "Tap on the internal pinned resistor divider that sets the preset 5.0 V, 3.3 V or 3.0 V output voltage, depending on the version."
      },
      {
        "number": "7",
        "name": "Feedback",
        "type": "input",
        "description": "Direct access to the error amplifier feedback input, used to program the output from 1.25 V to 29 V."
      },
      {
        "number": "8",
        "name": "Input",
        "type": "power_in",
        "description": "Unregulated input supply; the datasheet gives a 50 mV input-to-output differential at 100 µA and 380 mV at 100 mA."
      }
    ],
    "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 SOIC-8 pinout is printed as a top-view image with labels that do not extract in pin order. Pin n; The datasheet does not describe the Sense pin's function or limits beyond its label and block-diagra; The datasheet's micro sign is dropped in the text extraction (for example '75 A', '100 A'). The µA u"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0773,
        "at": "2026-10-18T02:49:56"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588907060625227776",
        "pages": 22,
        "sha256": "a61aad4d8579aefb",
        "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": [
      {
        "file": "lp2951cd-3-3r2g.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lp2951cd-3-3r2g-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "42dd0adc277a49b931a22e322405acf50ec2feafbd9497b6b72fbb062fde9ca5",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "a61aad4d8579aefb6dbfcfe3c6e43e7f7dc84be526e91d6d039c7cea7c7cc194",
      "rows": [
        {
          "name": "Output Voltage (3.3 V version), Vin = 4.3 V, IO = 100 µA, TA = 25°C",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 3.267,
          "typ": 3.3,
          "max": 3.333,
          "conditions": "Vin = 4.3 V, IO = 100 µA, TA = 25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (3.3 V version), TA = −40 to +125°C",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 3.234,
          "typ": null,
          "max": 3.366,
          "conditions": "TA = −40 to +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output Voltage (3.3 V version), line and load over range",
          "symbol": "VO",
          "kind": "electrical",
          "unit": "V",
          "min": 3.221,
          "typ": null,
          "max": 3.379,
          "conditions": "Vin = 4.3 to 30 V, IO = 100 µA to 100 mA, TA = −40 to +125°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Line Regulation",
          "symbol": "Regline",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.08,
          "max": 0.2,
          "conditions": "Vin = VO(nom) +1.0 V to 30 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Load Regulation",
          "symbol": "Regload",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 0.13,
          "max": 0.2,
          "conditions": "IO = 100 µA to 100 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "VI − VO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 30,
          "max": 80,
          "conditions": "IO = 100 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dropout Voltage",
          "symbol": "VI − VO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 350,
          "max": 450,
          "conditions": "IO = 100 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply Bias Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 93,
          "max": 120,
          "conditions": "IO = 100 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Supply Bias Current",
          "symbol": "ICC",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 4,
          "max": 12,
          "conditions": "IO = 100 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dropout Supply Bias Current",
          "symbol": "ICCdropout",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 110,
          "max": 170,
          "conditions": "Vin = VO(nom) − 0.5 V, IO = 100 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Current Limit",
          "symbol": "ILimit",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 220,
          "max": 300,
          "conditions": "VO shorted to ground",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Thermal Regulation",
          "symbol": "Regthermal",
          "kind": "electrical",
          "unit": "%/W",
          "min": null,
          "typ": 0.05,
          "max": 0.2,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference Voltage (TA = 25°C), C grade",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 1.21,
          "typ": 1.235,
          "max": 1.26,
          "conditions": "TA = 25°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference Voltage (TA = −40 to +125°C), C grade",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": null,
          "max": 1.27,
          "conditions": "TA = −40 to +125°C",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference Voltage (line and load over range), C grade",
          "symbol": "Vref",
          "kind": "electrical",
          "unit": "V",
          "min": 1.185,
          "typ": null,
          "max": 1.285,
          "conditions": "IO = 100 µA to 100 mA, Vin = 23 to 30 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Feedback Pin Bias Current",
          "symbol": "IFB",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 15,
          "max": 40,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Error Comparator Output Leakage Current",
          "symbol": "Ilkg",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.01,
          "max": 1,
          "conditions": "VOH = 30 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Error Comparator Output Low Voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 150,
          "max": 250,
          "conditions": "Vin = 4.5 V, IOL = 400 µA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Upper Threshold Voltage",
          "symbol": "Vthu",
          "kind": "electrical",
          "unit": "mV",
          "min": 40,
          "typ": 45,
          "max": null,
          "conditions": "Vin = 6.0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Lower Threshold Voltage",
          "symbol": "Vthl",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 60,
          "max": 95,
          "conditions": "Vin = 6.0 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Input Logic Voltage, Logic 0 (Regulator On)",
          "symbol": "Vshtdn",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.7,
          "conditions": "Logic 0 (Regulator On)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Input Logic Voltage, Logic 1 (Regulator Off)",
          "symbol": "Vshtdn",
          "kind": "electrical",
          "unit": "V",
          "min": 2,
          "typ": null,
          "max": 30,
          "conditions": "Logic 1 (Regulator Off)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Pin Input Current",
          "symbol": "Ishtdn",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 35,
          "max": 50,
          "conditions": "Vshtdn = 2.4 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Pin Input Current",
          "symbol": "Ishtdn",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 450,
          "max": 600,
          "conditions": "Vshtdn = 30 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Regulator Output Current in Shutdown Mode",
          "symbol": "Ioff",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 3,
          "max": 10,
          "conditions": "Vin = 30 V, Vshtdn = 2.0 V, VO = 0, Pin 6 connected to Pin 7",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Peak Transient Input Voltage",
          "symbol": "VCC",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": null,
          "typ": null,
          "max": 32,
          "conditions": "t < 300 ms",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Feedback Input Voltage",
          "symbol": "Vfb",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": -1.5,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Input Voltage",
          "symbol": "Vsd",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": -0.3,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Error Comparator Output Voltage",
          "symbol": "Verr",
          "kind": "absolute_maximum",
          "unit": "Vdc",
          "min": -0.3,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating Ambient Temperature Range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Die Junction Temperature Range",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Ambient (SOIC-8, D suffix)",
          "symbol": "RJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 180,
          "max": null,
          "conditions": "Case 751 (SOIC-8), D suffix",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance, Junction-to-Case (SOIC-8, D suffix)",
          "symbol": "RJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 45,
          "max": null,
          "conditions": "Case 751 (SOIC-8), D suffix",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lp2951cd-3.3r2g"
  ],
  "discovery_pitch": "LP2951CD-3.3R2G (onsemi) 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",
    "lp2951cd-3-3r2g.kicad_sym",
    "lp2951cd-3-3r2g.kicad_mod",
    "lp2951cd-3-3r2g.glb",
    "lp2951cd-3-3r2g.step",
    "lp2951cd-3-3r2g.lbr",
    "docs/hero.png",
    "docs/lp2951cd-3-3r2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lp2951cd-3-3r2g-hero.glb",
    "lp2951cd-3-3r2g-hero.overlay.json",
    "lp2951cd-3-3r2g-etched.glb"
  ],
  "visibility": {
    "public": true
  }
}