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Ray Set visibility: public 8ed1102 3h ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "lp3906sq-jxxi",
  "title": "LP3906SQ-JXXI",
  "brief": "Texas Instruments Battery Management, WQFN-24-EP(4x5). 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)",
    "lp3906sq-jxxi",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "LP3906SQ-JXXI",
    "manufacturer": "Texas Instruments",
    "package": "WQFN-24-EP(4x5)",
    "pin_count": 25,
    "category": "Power Management (PMIC)",
    "subcategory": "Battery Management",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lp3906.pdf",
    "parts": {
      "symbol": "lp3906sq-jxxi.kicad_sym",
      "footprint": "lp3906sq-jxxi.kicad_mod",
      "model_3d": "lp3906sq-jxxi-hero.glb",
      "model_3d_plain": "lp3906sq-jxxi-etched.glb",
      "model_3d_step": "lp3906sq-jxxi-etched.step",
      "model_3d_step_plain": "lp3906sq-jxxi.step",
      "lbr": "lp3906sq-jxxi.lbr"
    },
    "distributor_links": {
      "lcsc": "C201539"
    },
    "distributor_check": {
      "checked_at": "2026-11-06T00:41:23Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VIN2",
        "type": "power_in",
        "description": "Power in from either DC source or Battery to Buck 2."
      },
      {
        "number": "2",
        "name": "SW2",
        "type": "output",
        "description": "Buck2 switcher output pin."
      },
      {
        "number": "3",
        "name": "GND_SW2",
        "type": "power_in",
        "description": "Buck2 NMOS Power Ground."
      },
      {
        "number": "4",
        "name": "GND_C",
        "type": "power_in",
        "description": "Non switching core ground pin."
      },
      {
        "number": "5",
        "name": "GND_SW1",
        "type": "power_in",
        "description": "Buck1 NMOS Power Ground."
      },
      {
        "number": "6",
        "name": "SW1",
        "type": "output",
        "description": "Buck1 switcher output pin."
      },
      {
        "number": "7",
        "name": "VIN1",
        "type": "power_in",
        "description": "Power in from either DC source or Battery to buck 1."
      },
      {
        "number": "8",
        "name": "SDA",
        "type": "bidirectional",
        "description": "I2C Data (Bidirectional)."
      },
      {
        "number": "9",
        "name": "SCL",
        "type": "input",
        "description": "I2C Clock."
      },
      {
        "number": "10",
        "name": "EN_T",
        "type": "input",
        "description": "Enable for preset power on sequence."
      },
      {
        "number": "11",
        "name": "FB1",
        "type": "input",
        "description": "Buck1 input feedback terminal."
      },
      {
        "number": "12",
        "name": "AVDD",
        "type": "power_in",
        "description": "Analog Power for Buck converters."
      },
      {
        "number": "13",
        "name": "VINLDO1",
        "type": "power_in",
        "description": "Power in from either DC source or Battery to input terminal of LDO1."
      },
      {
        "number": "14",
        "name": "LDO1",
        "type": "power_out",
        "description": "LDO1 Output."
      },
      {
        "number": "15",
        "name": "ENLDO1",
        "type": "input",
        "description": "LDO1 enable pin, a logic HIGH enables the LDO1."
      },
      {
        "number": "16",
        "name": "ENLDO2",
        "type": "input",
        "description": "LDO2 enable pin, a logic HIGH enables the LDO2."
      },
      {
        "number": "17",
        "name": "GND_L",
        "type": "power_in",
        "description": "LDO Ground."
      },
      {
        "number": "18",
        "name": "LDO2",
        "type": "power_out",
        "description": "LDO2 Output."
      },
      {
        "number": "19",
        "name": "VINLDO2",
        "type": "power_in",
        "description": "Power in from either DC source or battery to input terminal to LDO2."
      },
      {
        "number": "20",
        "name": "VinLDO12",
        "type": "power_in",
        "description": "Analog Power for Internal Functions (VREF, BIAS, I2C, Logic)."
      },
      {
        "number": "21",
        "name": "FB2",
        "type": "input",
        "description": "Buck2 input feedback terminal."
      },
      {
        "number": "22",
        "name": "ENSW1",
        "type": "input",
        "description": "Enable Pin for Buck1 switcher, a logic HIGH enables Buck1."
      },
      {
        "number": "23",
        "name": "SYNC",
        "type": "input",
        "description": "Frequency Synchronization pin which allows the user to connect an external clock signal PLL to synchronize the PMIC internal oscillator."
      },
      {
        "number": "24",
        "name": "ENSW2",
        "type": "input",
        "description": "Enable Pin for Buck2 switcher, a logic HIGH enables Buck2."
      },
      {
        "number": "25",
        "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 requested hint is WQFN-24-EP(4x5), but the datasheet describes the package as 24-lead 5 x 4 x 0.; Pin descriptions are taken from the Pin Descriptions table on page 5. The DAP (exposed pad) is liste"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0184,
        "at": "2026-11-06T00:41:07"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lp3906.pdf",
        "pages": 47,
        "sha256": "4315df9ad8029838",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 25,
        "described": 25,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "file": "lp3906sq-jxxi.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          4,
          5,
          0.77
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "dd34955bd2f41c7d5d4f45257df2b8077e42f694598de69e58ad55ad191eecae",
        "checked": "2026-11-06",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "lp3906sq-jxxi-etched.step",
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        "checked": "2026-11-06",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "WQFN-24-EP(4x5)",
      "Category": "Power Management (PMIC)",
      "Pins": "25"
    },
    "appearance": {
      "housing": {
        "quote": "Human Body Model (5) 2 kV (1) Absolute Maximum Ratings indicate limits beyond which damage to the component may occur. Operating Ratings are conditions under",
        "page": 6,
        "doc": "ds.pdf",
        "material": "Abs"
      },
      "version": 1,
      "datasheet_sha256": "4315df9ad80298381be5ac3ccdfdca55114a4713a044d7213c4b8feccc311c85"
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    "characteristics": {
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      "source": "datasheet",
      "datasheet_sha256": "4315df9ad80298381be5ac3ccdfdca55114a4713a044d7213c4b8feccc311c85",
      "rows": [
        {
          "name": "Input voltage (VIN, SDA, SCL)",
          "symbol": "VIN, SDA, SCL",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
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        },
        {
          "name": "Power dissipation (PD_MAX)",
          "symbol": "PD_MAX",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 1.43,
          "conditions": "TA=85°C, TMAX=125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature (TJ-MAX)",
          "symbol": "TJ-MAX",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
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        },
        {
          "name": "Storage temperature range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Maximum lead temperature (soldering)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "",
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        },
        {
          "name": "ESD rating, Human Body Model",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Human body model",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Bucks input voltage range",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.7,
          "typ": null,
          "max": 5.5,
          "conditions": "Bucks",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction temperature range",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Ambient temperature range",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 28,
          "max": null,
          "conditions": "NHZ0024B",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "LDO input operational voltage range",
          "symbol": "VIN",
          "kind": "electrical",
          "unit": "V",
          "min": 1.74,
          "typ": null,
          "max": 5.5,
          "conditions": "VINLDO1 and VINLDO2 PMOS pins",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Output voltage accuracy (default VOUT)",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Load current = 1 mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "ΔVOUT",
          "kind": "electrical",
          "unit": "%/V",
          "min": null,
          "typ": null,
          "max": 0.15,
          "conditions": "VIN = (VOUT + 0.3V) to 5.0V, Load Current = 1 mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage",
          "symbol": "VIN – VOUT",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 25,
          "max": 200,
          "conditions": "Load Current = 50 mA",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "ESR of output capacitor",
          "symbol": "ESR",
          "kind": "electrical",
          "unit": "mΩ",
          "min": 5,
          "typ": null,
          "max": 500,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Buck output voltage accuracy (default VOUT)",
          "symbol": "VOUT",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": null,
          "max": 3,
          "conditions": "Default VOUT",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Input low level",
          "symbol": "VIL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        },
        {
          "name": "Input high level",
          "symbol": "VIH",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": null,
          "max": null,
          "conditions": "",
          "source_page": 9,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "LP3906SQ-JXXI (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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