LP5309B3F

{
  "schema_version": 1,
  "type": "component",
  "slug": "lp5309b3f",
  "title": "LP5309B3F",
  "brief": "LOWPOWER(微源半导体) Power Distribution Switches, SOT-23. 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)",
    "lp5309b3f",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LP5309B3F",
    "manufacturer": "LOWPOWER(微源半导体)",
    "package": "SOT-23",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Power Distribution Switches",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8616359659607912448",
    "parts": {
      "symbol": "lp5309b3f.kicad_sym",
      "footprint": "lp5309b3f.kicad_mod",
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      "lbr": "lp5309b3f.lbr"
    },
    "distributor_links": {
      "lcsc": "C6430898"
    },
    "distributor_check": {
      "checked_at": "2026-10-17T21:59:05Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply and input of the power switch, tolerating up to 32V (absolute max) with over-voltage protection at 6V and under-voltage lockout at 2.7V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "3",
        "name": "VOUT",
        "type": "power_out",
        "description": "Output of the power switch, rated -0.3V to 7V to GND with an integrated output discharge."
      }
    ],
    "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+vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin description table lists only GND, VIN and VOUT. No enable pin appears on the 3-pin SOT23 pac",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 8,
        "cost_usd": 0.1821,
        "at": "2026-10-17T21:57:27"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8616359659607912448",
        "pages": 8,
        "sha256": "92bf10761ea8bfde",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 3,
        "described": 3,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "seat": "z = 0",
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        "centre_offset_mm": 0,
        "footprint_binding": "identity",
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        "checked": "2026-10-17",
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  "metadata": {
    "specs": {
      "Manufacturer": "LOWPOWER(微源半导体)",
      "Package": "SOT-23",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "92bf10761ea8bfde88ed058c5c4feff0506e7a03b7d1048b138d156731519abd",
      "rows": [
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          "name": "VIN to GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 32,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "VOUT to GND",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 7,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Maximum Junction Temperature (TA)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Soldering Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "at leads, 10 seconds",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Voltage",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Output Current",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": 0,
          "typ": null,
          "max": 1.5,
          "conditions": "",
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        },
        {
          "name": "Ambient Temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 3,
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        },
        {
          "name": "Maximum Power Dissipation (PD)",
          "symbol": "PD",
          "kind": "thermal",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.6,
          "conditions": "TA <= 25℃",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance (θJA)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 203,
          "max": null,
          "conditions": "2S2P JEDEC standard PCB (Note 2)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM (Human Body Model, JEDEC JS-001)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -4000,
          "typ": null,
          "max": 4000,
          "conditions": "JEDEC JS-001",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ESD CDM (Charged Device Model, JEDEC JS-002)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -500,
          "typ": null,
          "max": 500,
          "conditions": "JEDEC JS-002",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "On-resistance",
          "symbol": "RDS(ON)",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 145,
          "max": 175,
          "conditions": "VIN = 5V, IOUT=200mA, TA=25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input quiescent current",
          "symbol": "IQ",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 90,
          "max": 150,
          "conditions": "VIN = 5V, OUT floating, VENB = 0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Under-Voltage Lockout level (falling)",
          "symbol": "VUVLO_F",
          "kind": "electrical",
          "unit": "V",
          "min": 2.6,
          "typ": 2.7,
          "max": 2.8,
          "conditions": "VIN voltage falling",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Under-Voltage Lockout level (rising)",
          "symbol": "VUVLO_R",
          "kind": "electrical",
          "unit": "V",
          "min": 2.7,
          "typ": 2.8,
          "max": 2.9,
          "conditions": "VIN voltage rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Over current protection level",
          "symbol": "IOCP",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.53,
          "max": null,
          "conditions": "VIN = 5V, TA=25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OCP accuracy (IOCP > 150mA)",
          "symbol": "ACCOCP",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 15,
          "max": null,
          "conditions": "VIN = 5V, TA=25°C, IOCP > 150mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OCP accuracy (IOCP < 150mA)",
          "symbol": "ACCOCP",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 25,
          "max": null,
          "conditions": "VIN = 5V, TA=25°C, IOCP < 150mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Over-Voltage Protection response time",
          "symbol": "tOVP",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 30,
          "max": 50,
          "conditions": "VIN rising from 5V with 30V/μs, ROUT = 100Ω, COUT = 0, time from VIN > VOVP_R to OUT voltage stop rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Input shutdown current",
          "symbol": "ISD",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VIN = 5V, OUT grounded, VENB = 5V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Over-Voltage Protection level (falling)",
          "symbol": "VOVP_F",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 5.9,
          "max": null,
          "conditions": "VIN voltage falling",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Over-Voltage Protection level (rising)",
          "symbol": "VOVP_R",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 6,
          "max": null,
          "conditions": "VIN voltage rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Short circuit protection level",
          "symbol": "ISHORT",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 5,
          "max": null,
          "conditions": "VIN = 5V, TA=25°C",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output auto discharge",
          "symbol": "RDIS",
          "kind": "electrical",
          "unit": "kΩ",
          "min": null,
          "typ": 3,
          "max": null,
          "conditions": "VIN = 5V, VEN = 0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Enable logic high voltage level",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.4,
          "max": null,
          "conditions": "VIN = 2.4V to 6V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Enable logic high voltage level (VIL row, printed name)",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.4,
          "max": null,
          "conditions": "VIN = 2.4V to 6V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "OCP qualification time",
          "symbol": "tOCP_QUAL",
          "kind": "electrical",
          "unit": "μs",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VIN = 5V, TA = 25°C, qualification time from IOUT hits IOCP to switch turned off",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load switch turned on delay",
          "symbol": "tDON",
          "kind": "electrical",
          "unit": "ms",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "VIN = 5V, ROUT = 100Ω, COUT = 22μF, time from enabled to VOUT = 0.5",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Output rising time",
          "symbol": "tR",
          "kind": "electrical",
          "unit": "μs",
          "min": null,
          "typ": 450,
          "max": null,
          "conditions": "VIN = 5V, ROUT = 100Ω, COUT = 22μF, time from VOUT = 0.1×VIN to 0.9×VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Load switch turned off delay",
          "symbol": "tOFF",
          "kind": "electrical",
          "unit": "μs",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "VIN = 5V, ROUT = 500Ω, COUT = 0.1μF, time from disabled to VOUT = 0.9×VIN",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown trigger",
          "symbol": "TSD",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "Temperature rising",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown release",
          "symbol": "TSD_REL",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 130,
          "max": null,
          "conditions": "Temperature falling",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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