LM3489MMX

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm3489mmx",
  "title": "LM3489MMX",
  "brief": "Texas Instruments AC-DC Controllers and Regulators, VSSOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "lm3489mmx"
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  "component": {
    "mpn": "LM3489MMX",
    "manufacturer": "Texas Instruments",
    "package": "VSSOP-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "AC-DC Controllers and Regulators",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm3489mmx.pdf",
    "parts": {
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      "footprint": "lm3489mmx.kicad_mod",
      "model_3d": "lm3489mmx-etched.glb",
      "model_3d_plain": "lm3489mmx.glb",
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      "model_3d_step_plain": "lm3489mmx.step",
      "lbr": "lm3489mmx.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "ISENSE",
        "type": "input",
        "description": "Current sense input. Connects to the external PFET drain terminal directly or through a series resistor up to 600 Ω for 28 V > VIN > 35 V. Used with ADJ to set the cycle-by-cycle current limit."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground reference for the controller's internal circuitry."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable pin. Tie EN to ground to shut down the device, or float to enable (internally pulled high, clamped at ~8 V typical). Can also be used to implement a UVLO function. Enable rising threshold typ 1.5 V, hysteresis 130 mV."
      },
      {
        "number": "4",
        "name": "FB",
        "type": "input",
        "description": "Feedback input. Connect FB to a resistor voltage divider between the regulated output and GND to set the adjustable output voltage. Internal reference VFB = 1.239 V typical."
      },
      {
        "number": "5",
        "name": "ADJ",
        "type": "input",
        "description": "Current limit threshold adjustment. Connected to an internal 5.5-µA current source; a resistor between ADJ and VIN sets a reference voltage that is compared with the ISENSE pin voltage to detect an overcurrent condition."
      },
      {
        "number": "6",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground return for the PFET gate driver output stage."
      },
      {
        "number": "7",
        "name": "PGATE",
        "type": "output",
        "description": "Gate drive output for the external PFET. PGATE swings between VIN and (VIN − 5 V). Driver source resistance ~5.5 Ω, sink ~8.5 Ω; peak source current ~0.44 A."
      },
      {
        "number": "8",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input pin. Operating range 4.5 V to 35 V (absolute max 36 V)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm3489mmx.pdf",
        "pages": 27,
        "sha256": "8efdf3c39fd516a0",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
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        -0.75
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "VSSOP-8_2.3x2mm_P0.5mm@sha256:dca72da69de3263a",
      "mark": "drawn"
    },
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        "file": "lm3489mmx.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          3.1,
          2,
          0.85
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "353552981eef35cb93635057d4aeb89aef22648c77af6fd095e328bfe6b834bd",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "lm3489mmx-etched.step",
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "VSSOP-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm3489mmx"
  ],
  "discovery_pitch": "LM3489MMX (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "lm3489mmx.step",
    "lm3489mmx-etched.step",
    "lm3489mmx.lbr",
    "docs/hero.png",
    "docs/lm3489mmx-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "LM3489MMX",
      "kind": "packaging"
    },
    {
      "mpn": "LM3489MMXQMM",
      "kind": "packaging"
    },
    {
      "mpn": "LM3489MMXQMMX",
      "kind": "packaging"
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  ],
  "updated_at": "2026-09-28T16:42:00.512Z"
}