main
Ray Set visibility: public cf66b25 2d ago
{
  "schema_version": 1,
  "type": "component",
  "slug": "he9459m6r",
  "title": "HE9459M6R",
  "brief": "HEERMICR DC-DC Converters, SOT-23-6. 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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  "component": {
    "mpn": "HE9459M6R",
    "manufacturer": "HEERMICR",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/037dea073ef79ead2fce2f859cb834fe.pdf",
    "parts": {
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    "distributor_links": {
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      "checked_at": "2026-11-04T23:48:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
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        "name": "BST",
        "type": "passive",
        "description": "A capacitor connected between SW and BST is required to form a floating supply across the high-side switch driver."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin of the device."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Adjustable-version feedback input; connect FB to the center point of the external resistor divider."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Drive to a logic-high to enable the IC and to a logic-low to disable it and enter micro-power shutdown mode."
      },
      {
        "number": "5",
        "name": "IN",
        "type": "power_in",
        "description": "Power supply pin; the electrical characteristics give an input voltage range of 4.5V to 55V."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "power_out",
        "description": "Switching pin that drives the external inductor and is referenced to the BST capacitor; SW voltage is rated -0.3V to (VIN+0.5V)."
      }
    ],
    "provenance": {
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      "factory_chain": {
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        "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 datasheet's pin configuration diagram is garbled in the text extraction. Pin numbers and names w"
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        "pages_sent": 12,
        "cost_usd": 0.0381,
        "at": "2026-11-04T23:48:41"
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        "pages": 12,
        "sha256": "5cc93c667e50ce87",
        "source_tier": "lcsc"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "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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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
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        "sha256": "60c6c200ed81c736b6e8e68152375d1a4f020b13930f580d8651bd362c67217e",
        "checked": "2026-11-04",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "HEERMICR",
      "Package": "SOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "5cc93c667e50ce878170cf5e1804c1b130fce3ce724d92e700b299044f774975",
      "rows": [
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          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 55,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply Current (Quiescent)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "VEN =3.0V",
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          "source": "datasheet"
        },
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          "name": "Supply Current (Shutdown)",
          "symbol": "",
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          "unit": "uA",
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          "name": "EN Rising Threshold",
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        },
        {
          "name": "EN Falling Threshold",
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        },
        {
          "name": "Under-Voltage Lockout Threshold Wake up VIN Voltage",
          "symbol": "",
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        {
          "name": "Under-Voltage Lockout Threshold Shutdown VIN Voltage",
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        {
          "name": "Vin,EN Voltage",
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          "unit": "V",
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        },
        {
          "name": "FB Voltages",
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          "conditions": "",
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        },
        {
          "name": "SW Voltage",
          "symbol": "",
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          "source_page": 4,
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        },
        {
          "name": "BS Voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5,
          "conditions": "relative to SW pin: (Vsw-0.3) to (Vsw+5V)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "℃",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering, 10s)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "soldering, 10s",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "℃",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Feedback Voltage",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "",
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        },
        {
          "name": "Upper Switch Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switching Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 98,
          "max": null,
          "conditions": "VFB=90%",
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        {
          "name": "Soft Start",
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          "unit": "mS",
          "min": null,
          "typ": 0.85,
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        },
        {
          "name": "Switch On-Resistance",
          "symbol": "",
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          "unit": "mΩ",
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          "typ": 800,
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        },
        {
          "name": "Minimum On-Time",
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          "unit": "nS",
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        },
        {
          "name": "Thermal Shutdown",
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        {
          "name": "Thermal Hysteresis",
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          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance (θJA)",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "℃/W",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
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          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  ],
  "discovery_pitch": "HE9459M6R (HEERMICR) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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}