A7987TR

{
  "slug": "a7987tr",
  "version": "0.1.0",
  "type": "component",
  "description": "STMicroelectronics DC-DC Converters, HTSSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "power supply chip",
    "a7987tr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
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    "path": "docs/hero.png"
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    "README.md",
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    "a7987tr.kicad_mod",
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    "a7987tr.step",
    "a7987tr.lbr",
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    "docs/a7987tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
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    "a7987tr-hero.overlay.json"
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  "component": {
    "mpn": "A7987TR",
    "manufacturer": "STMicroelectronics",
    "package": "HTSSOP-16-EP",
    "pin_count": 17,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930930030993408",
    "parts": {
      "symbol": "a7987tr.kicad_sym",
      "footprint": "a7987tr.kicad_mod",
      "model_3d": "a7987tr-hero.glb",
      "model_3d_plain": "a7987tr.glb",
      "model_3d_step": "a7987tr-etched.step",
      "model_3d_step_plain": "a7987tr.step",
      "lbr": "a7987tr.lbr"
    },
    "distributor_links": {
      "lcsc": 2658021,
      "digikey": "497-19100-2-ND",
      "mouser": "511-A7987TR"
    },
    "distributor_check": {
      "checked_at": "2026-10-06T17:10:29Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "497-19100-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "511-A7987TR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VBIAS",
        "type": "power_in",
        "description": "Auxiliary input voltage supply for analog circuitry, typically connected to regulated output voltage or external rail higher than 3V."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "DC input voltage supply."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "DC input voltage supply."
      },
      {
        "number": "4",
        "name": "VCC",
        "type": "power_in",
        "description": "Filtered DC input voltage for internal circuitry; bypass with 1µF ceramic capacitor to GND."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Active high enable pin; connect to VCC if not used."
      },
      {
        "number": "6",
        "name": "SS",
        "type": "input",
        "description": "Soft-start programming pin with internal 5µA current generator charging external capacitor."
      },
      {
        "number": "7",
        "name": "SYNCH",
        "type": "input",
        "description": "Master/slave synchronization pin for multiple device clock synchronization."
      },
      {
        "number": "8",
        "name": "COMP",
        "type": "output",
        "description": "Output of error amplifier; external compensation network connection point."
      },
      {
        "number": "9",
        "name": "FB",
        "type": "input",
        "description": "Inverting input of error amplifier; output voltage feedback sensing node."
      },
      {
        "number": "10",
        "name": "FSW",
        "type": "input",
        "description": "Switching frequency programming pin; pull-down resistor to GND selects frequency between 250kHz and 1.5MHz."
      },
      {
        "number": "11",
        "name": "ILIM",
        "type": "input",
        "description": "Peak current limit programming pin; pull-down resistor to GND selects current limitation."
      },
      {
        "number": "12",
        "name": "PGOOD",
        "type": "tri_state",
        "description": "Power good open collector output driven low when output voltage is out of regulation."
      },
      {
        "number": "13",
        "name": "LX",
        "type": "output",
        "description": "Switching node connecting high-side and low-side power switches."
      },
      {
        "number": "14",
        "name": "LX",
        "type": "output",
        "description": "Switching node connecting high-side and low-side power switches."
      },
      {
        "number": "15",
        "name": "BOOT",
        "type": "output",
        "description": "Bootstrap supply pin for gate driver; connect 100nF external capacitor between BOOT and LX."
      },
      {
        "number": "16",
        "name": "GND",
        "type": "power_in",
        "description": "Signal ground reference."
      },
      {
        "number": "17",
        "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-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "exposed pad 17 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 13,
        "cost_usd": 0.11,
        "at": "2026-10-06T17:10:14"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588930930030993408",
        "pages": 36,
        "sha256": "9a51ee02e0cbf118",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 17,
        "described": 17,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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}