main
Ray Set visibility: public e6f11ad 3d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "lm3489qmm",
  "title": "LM3489QMM",
  "brief": "Texas Instruments DC-DC Controllers, VSSOP-8-0.65mm. 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 supply chip",
    "lm3489qmm",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "LM3489QMM",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8-0.65mm",
    "pin_count": 8,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Controllers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/lm3489-q1",
    "parts": {
      "symbol": "lm3489qmm.kicad_sym",
      "footprint": "lm3489qmm.kicad_mod",
      "model_3d": "lm3489qmm-hero.glb",
      "model_3d_plain": "lm3489qmm-etched.glb",
      "model_3d_step": "lm3489qmm-etched.step",
      "model_3d_step_plain": "lm3489qmm.step",
      "lbr": "lm3489qmm.lbr"
    },
    "distributor_links": {
      "lcsc": "C2862414"
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    "distributor_check": {
      "checked_at": "2026-10-22T22:58:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 793 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
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    },
    "pins": [
      {
        "number": "1",
        "name": "ISENSE",
        "type": "input",
        "description": "Current sense input that must be connected to the PFET drain terminal directly or through a series resistor up to 600 Ω for 28 V > VIN > 35 V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable pin: connect to ground to shut down the part or float to enable operation (internally pulled high), and it can also be used for UVLO function."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback input that connects to a resistor voltage divider between the output and GND for an adjustable output voltage."
      },
      {
        "number": "5",
        "name": "ADJ",
        "type": "input",
        "description": "Current limit threshold adjustment connected to an internal 5.5-µA current source, with a resistor to VIN whose voltage is compared with the ISENSE pin voltage to detect overcurrent."
      },
      {
        "number": "6",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "7",
        "name": "PGATE",
        "type": "output",
        "description": "Gate drive output for the external PFET, swinging between VIN and VIN minus 5 V."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input pin, with a recommended operating range of 4.5 V to 35 V."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
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        "extractor": "extract_pins 0.3",
        "primary_model": "claude-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The datasheet text gives the PGATE swing as 'VIN 5-V'. The minus sign was lost in extraction, so 'VI; The package hint says VSSOP-8-0.65mm, but the datasheet text does not state the pitch. The package i"
        ],
        "pages_sent": 7,
        "cost_usd": 0.0788,
        "at": "2026-10-22T22:58:32"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/lm3489-q1",
        "pages": 28,
        "sha256": "8486c86e0ce9150d",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
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    "viewers": {
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        "checked": "2026-10-22",
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        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VSSOP-8-0.65mm",
      "Category": "Power Supply Chip",
      "Pins": "8"
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    "characteristics": {
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      "rows": [
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          "typ": 7,
          "max": 15,
          "conditions": "EN = 0 V",
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          "conditions": "Enable rising",
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          "name": "Enable threshold hysteresis",
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        {
          "name": "Quiescent current at ground pin",
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          "max": 400,
          "conditions": "FB = 1.5 V (not switching)",
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          "source": "datasheet"
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        {
          "name": "Feedback voltage",
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          "kind": "electrical",
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          "min": 1.214,
          "typ": 1.239,
          "max": 1.264,
          "conditions": "",
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        {
          "name": "Comparator hysteresis",
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          "min": null,
          "typ": 10,
          "max": 20,
          "conditions": "",
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        {
          "name": "Current limit comparator offset",
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          "min": -20,
          "typ": 0,
          "max": 20,
          "conditions": "VFB = 1 V",
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        {
          "name": "Current limit ADJ current source",
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          "kind": "electrical",
          "unit": "µA",
          "min": 3,
          "typ": 5.5,
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          "conditions": "VFB = 1.5 V",
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          "name": "Current limit one-shot off-time",
          "symbol": "TCL",
          "kind": "electrical",
          "unit": "µs",
          "min": 6,
          "typ": 9,
          "max": 14,
          "conditions": "VADJ = 11.5 V, VISNS = 11 V, VFB = 1 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "FB pin bias current",
          "symbol": "IFB",
          "kind": "electrical",
          "unit": "nA",
          "min": null,
          "typ": 300,
          "max": 750,
          "conditions": "VFB = 1 V",
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          "source": "datasheet"
        },
        {
          "name": "Driver resistance, source",
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          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 5.5,
          "max": null,
          "conditions": "Source, ISOURCE = 100 mA",
          "source_page": 5,
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        },
        {
          "name": "Driver resistance, sink",
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          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 8.5,
          "max": null,
          "conditions": "Sink, ISINK = 100 mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver output current, source",
          "symbol": "IPGATE",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0.44,
          "max": null,
          "conditions": "Source, VIN = 7 V, PGATE = 3.5 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Driver output current, sink",
          "symbol": "IPGATE",
          "kind": "electrical",
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          "min": null,
          "typ": 0.1,
          "max": null,
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          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum ON time in normal operation",
          "symbol": "TONMIN_NOR",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VISNS = VADJ + 0.1 V, Cload on OUT = 1000 pF",
          "source_page": 5,
          "source": "datasheet"
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          "name": "Minimum ON time in current limit",
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          "min": null,
          "typ": 200,
          "max": null,
          "conditions": "VISNS = VADJ – 0.1 V, VFB = 1 V, Cload on OUT = 1000 pF",
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          "source": "datasheet"
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        {
          "name": "Feedback voltage line regulation",
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          "conditions": "4.5 V ≤ VIN ≤ 35 V",
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          "name": "VIN voltage",
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          "name": "PGATE voltage",
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          "name": "FB voltage",
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          "name": "ISENSE voltage",
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          "name": "EN voltage",
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          "max": 6,
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        {
          "name": "Power dissipation",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "mW",
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          "conditions": "TA = 25°C",
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          "name": "Junction temperature",
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          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
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          "conditions": "",
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        {
          "name": "Storage temperature",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
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        {
          "name": "ESD HBM (LM3489-Q1)",
          "symbol": "V(ESD)",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -2000,
          "typ": null,
          "max": 2000,
          "conditions": "Human body model, per AEC Q100-002",
          "source_page": 4,
          "source": "datasheet"
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        {
          "name": "ESD CDM (LM3489-Q1)",
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          "typ": null,
          "max": 750,
          "conditions": "Charged device model, per AEC Q100-011",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply voltage",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 35,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "EN voltage",
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          "typ": null,
          "max": 5.5,
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        {
          "name": "Operating junction temperature (LM3489-Q1)",
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          "typ": 163.7,
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          "conditions": "DGK (VSSOP) 8 pins",
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          "source": "datasheet"
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          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
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          "min": null,
          "typ": 56.6,
          "max": null,
          "conditions": "DGK (VSSOP) 8 pins",
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          "source": "datasheet"
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        {
          "name": "Junction-to-board thermal resistance",
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          "kind": "thermal",
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          "min": null,
          "typ": 83.3,
          "max": null,
          "conditions": "DGK (VSSOP) 8 pins",
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          "source": "datasheet"
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        {
          "name": "Junction-to-top characterization parameter",
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          "typ": 5.4,
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  "author": {
    "name": "Ray",
    "email": "[email protected]"
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