LP3997-33QVF

{
  "schema_version": 1,
  "type": "component",
  "slug": "lp3997-33qvf",
  "title": "LP3997-33QVF",
  "brief": "LOWPOWER Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DFN-4-EP(1x1). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
    "lp3997-33qvf",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "LP3997-33QVF",
    "manufacturer": "LOWPOWER",
    "package": "DFN-4-EP(1x1)",
    "pin_count": 5,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8604443006045077504",
    "parts": {
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      "model_3d_step_plain": "lp3997-33qvf.step",
      "lbr": "lp3997-33qvf.lbr"
    },
    "distributor_links": {
      "lcsc": "C42460080"
    },
    "distributor_check": {
      "checked_at": "2026-10-25T15:52:54Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Output pin; bypass with a 1μF or greater ceramic capacitor from this pin to ground, placed as close to the pin as possible."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference pin for the regulator."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Active-high enable; driving EN above 1V turns on the regulator and driving it below 0.4V puts the regulator into shutdown mode."
      },
      {
        "number": "4",
        "name": "VIN",
        "type": "power_in",
        "description": "Supply input pin with an operating range of 1.6V to 6.0V; must be decoupled to GND with a 1μF or greater ceramic capacitor placed as close to the pin as possible."
      },
      {
        "number": "5",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 Pin Description table has a row '4 NC No connection' with a single pin number. The pin diagram a; The datasheet does not mention an exposed/thermal pad for the DFN1x1-4 package, so none is listed. T",
          "exposed pad 5 added from the footprint"
        ],
        "pages_sent": 16,
        "cost_usd": 0.0679,
        "at": "2026-10-25T15:52:36"
      },
      "datasheet": {
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        "pages": 16,
        "sha256": "685b6d34991cec02",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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        "centre_offset_mm": 0,
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  "metadata": {
    "specs": {
      "Manufacturer": "LOWPOWER",
      "Package": "DFN-4-EP(1x1)",
      "Category": "Power Management (PMIC)",
      "Pins": "5"
    },
    "appearance": {
      "contacts": {
        "quote": "practically possible to the respective LDO pins. Place ground return connections to the input and output capacitors, and to the LDO ground pin as close to each other as possible with a wide and compon",
        "page": 10,
        "doc": "ds.pdf",
        "material": "copper"
      },
      "version": 1,
      "datasheet_sha256": "685b6d34991cec02f340a9752cc245d0cc065d24b820608ca2cebae02ebf2897"
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    "characteristics": {
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          "name": "Input Voltage Operation Range",
          "symbol": "VIN",
          "kind": "electrical",
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          "min": 1.6,
          "typ": null,
          "max": 6,
          "conditions": "",
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        },
        {
          "name": "Output Voltage Accuracy",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "V",
          "min": 3.25,
          "typ": 3.3,
          "max": 3.35,
          "conditions": "ILOAD=1mA",
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        {
          "name": "Load Current Limit",
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          "kind": "electrical",
          "unit": "mA",
          "min": 400,
          "typ": null,
          "max": 500,
          "conditions": "VOUT=0.9*VOUT(Nom)",
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        },
        {
          "name": "Input Voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
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          "min": 1.6,
          "typ": null,
          "max": 6,
          "conditions": "",
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        {
          "name": "Operating Junction Temperature Range",
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        {
          "name": "Ambient Temperature Range",
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        {
          "name": "VIN Pin to GND",
          "symbol": "VIN",
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          "typ": null,
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        {
          "name": "VOUT, EN Pin to GND",
          "symbol": "VOUT, EN",
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          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": null,
          "conditions": "upper limit printed as VIN (not numeric)",
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        },
        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
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        },
        {
          "name": "Operating Ambient Temperature Range",
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          "unit": "℃",
          "min": -40,
          "typ": null,
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        },
        {
          "name": "Maximum Soldering Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "at leads, 10 sec",
          "source_page": 4,
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        },
        {
          "name": "ESD Human Body Model",
          "symbol": "HBM",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 4,
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        },
        {
          "name": "ESD Charged Device Model",
          "symbol": "CDM",
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          "min": null,
          "typ": null,
          "max": 1,
          "conditions": "CDM",
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        },
        {
          "name": "DC Supply Quiescent Current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "VEN=VIN, ILOAD=0mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown Current",
          "symbol": "ISD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VEN=0V",
          "source_page": 5,
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        },
        {
          "name": "Output Voltage Line Regulation",
          "symbol": "VOUT",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": 0.02,
          "max": null,
          "conditions": "VIN=VOUT+0.5V~6V, ILOAD=1mA",
          "source_page": 5,
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        },
        {
          "name": "Output Voltage Load Regulation",
          "symbol": "VLOAD",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 20,
          "max": null,
          "conditions": "ILOAD from 1mA to 300mA",
          "source_page": 5,
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        },
        {
          "name": "Max Load Current",
          "symbol": "IOUT_MAX",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 300,
          "max": null,
          "conditions": "VEN=VIN",
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        {
          "name": "Short Current Limit",
          "symbol": "ISHORT",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "VOUT short to GND",
          "source_page": 5,
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        },
        {
          "name": "Dropout Voltage",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "VOUT=3.3V, ILOAD=100mA",
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        {
          "name": "Dropout Voltage",
          "symbol": "VDROP",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 180,
          "max": null,
          "conditions": "VOUT=3.3V, ILOAD=300mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output Noise",
          "symbol": "eN",
          "kind": "electrical",
          "unit": "μVRMS",
          "min": null,
          "typ": 60,
          "max": null,
          "conditions": "10Hz to 100kHz, VOUT=3.3V, ILOAD=20mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio at 1kHz",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 65,
          "max": null,
          "conditions": "f=1kHz; VIN=(VOUT+1V) DC+0.2VP-P, IOUT=20mA, VOUT=3.3V",
          "source_page": 5,
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        {
          "name": "Power Supply Rejection Ratio at 10kHz",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 58,
          "max": null,
          "conditions": "f=10kHz; VIN=(VOUT+1V) DC+0.2VP-P, IOUT=20mA, VOUT=3.3V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Rejection Ratio at 100kHz",
          "symbol": "PSRR",
          "kind": "electrical",
          "unit": "dB",
          "min": null,
          "typ": 52,
          "max": null,
          "conditions": "f=100kHz; VIN=(VOUT+1V) DC+0.2VP-P, IOUT=20mA, VOUT=3.3V",
          "source_page": 5,
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        },
        {
          "name": "Auto-Discharge Resistance",
          "symbol": "RDIS",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
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        {
          "name": "Thermal Shutdown Threshold",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 155,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "Thermal Shutdown Hysteresis",
          "symbol": "TSD_HYS",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "",
          "source_page": 5,
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        },
        {
          "name": "EN Logic High Voltage",
          "symbol": "VENH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "EN Logic Low Voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.4,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "EN Input Current",
          "symbol": "IEN",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 120,
          "max": null,
          "conditions": "VEN=0 to 5.5V",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
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    "name": "Ray",
    "email": "[email protected]"
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