LM5109BMA

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm5109bma",
  "title": "LM5109BMA",
  "brief": "Texas Instruments Gate Drivers, SOIC-8. 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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    "motor driver ics",
    "lm5109bma",
    "factory-2.0.0",
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  "component": {
    "mpn": "LM5109BMA",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Motor Driver ICs",
    "subcategory": "Gate Drivers",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm5109b.pdf",
    "parts": {
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      "footprint": "lm5109bma.kicad_mod",
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      "model_3d_plain": "lm5109bma.glb",
      "model_3d_step": "lm5109bma-etched.step",
      "model_3d_step_plain": "lm5109bma.step",
      "lbr": "lm5109bma.lbr"
    },
    "distributor_links": {
      "lcsc": "C1549317",
      "digikey": "2156-LM5109BMA-ND",
      "mouser": "926-LM5109BMA"
    },
    "distributor_check": {
      "checked_at": "2026-10-05T20:25:46Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-LM5109BMA-ND",
        "status": "found",
        "lifecycle": "Obsolete"
      },
      "mouser": {
        "pn": "926-LM5109BMA",
        "status": "found",
        "lifecycle": "Obsolete"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive gate drive supply - Locally decouple to VSS using low ESR and ESL capacitor located as close to IC as possible."
      },
      {
        "number": "2",
        "name": "HI",
        "type": "input",
        "description": "High-side control input - The HI input is compatible with TTL and CMOS input thresholds. Unused HI input must be tied to ground and not left open."
      },
      {
        "number": "3",
        "name": "LI",
        "type": "input",
        "description": "Low-side control input - The LI input is compatible with TTL and CMOS input thresholds. Unused LI input must be tied to ground and not left open."
      },
      {
        "number": "4",
        "name": "VSS",
        "type": "power_in",
        "description": "Ground - All signals are referenced to this ground."
      },
      {
        "number": "5",
        "name": "LO",
        "type": "output",
        "description": "Low-side gate driver output - Connect to the gate of the low-side N-MOS device."
      },
      {
        "number": "6",
        "name": "HS",
        "type": "power_in",
        "description": "High-side source connection - Connect to the negative terminal of the bootstrap capacitor and to the source of the high-side N-MOS device."
      },
      {
        "number": "7",
        "name": "HO",
        "type": "output",
        "description": "High-side gate driver output - Connect to the gate of the high-side N-MOS device."
      },
      {
        "number": "8",
        "name": "HB",
        "type": "power_in",
        "description": "High-side gate driver positive supply rail - Connect the positive terminal of the bootstrap capacitor to HB and the negative terminal of the bootstrap capacitor to HS. The bootstrap capacitor must be placed as close to IC as possible."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 8,
        "cost_usd": 0.0648,
        "at": "2026-10-05T20:25:31"
      },
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm5109b.pdf",
        "pages": 29,
        "sha256": "8e29b5a213117fac",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "Motor Driver ICs",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
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  "discovery_triggers": [
    "lm5109bma"
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  "discovery_pitch": "LM5109BMA (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "type": "image",
    "path": "docs/hero.png"
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    "lm5109bma.step",
    "lm5109bma.lbr",
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}