MT2499A

{
  "schema_version": 1,
  "type": "component",
  "slug": "mt2499a",
  "title": "MT2499A",
  "brief": "Aerosemi DC-DC Converters, ESOP-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": [
    "component",
    "power management (pmic)",
    "mt2499a",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "MT2499A",
    "manufacturer": "Aerosemi",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835277830291456",
    "parts": {
      "symbol": "mt2499a.kicad_sym",
      "footprint": "mt2499a.kicad_mod",
      "model_3d": "mt2499a-hero.glb",
      "model_3d_plain": "mt2499a.glb",
      "model_3d_step": "mt2499a-etched.step",
      "model_3d_step_plain": "mt2499a.step",
      "lbr": "mt2499a.lbr"
    },
    "distributor_links": {
      "lcsc": "C3007555"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T12:38:19Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BS",
        "type": "passive",
        "description": "Bootstrap pin; a capacitor connected between SW and BS is required to form a floating supply across the high-side switch driver."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input, operating range 4.5V to 21V (absolute maximum -0.3V to 23V)."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "power_out",
        "description": "Switching node output of the converter (absolute maximum -0.3V to VIN+0.5V)."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Adjustable version feedback input; connect to the center point of the external resistor divider (0.925V reference, absolute maximum -0.3V to 6V)."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Drive to logic-high to enable the IC and to logic-low to disable it and enter micro-power shutdown mode (absolute maximum -0.3V to 23V)."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad (EPAD), connected to ground; connect to a large copper area for cooling."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "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 exposed pad is listed in the datasheet pin table as 'GND EPAD' with no numeric pin number, so it; Pins 6 and 8 are marked NC in the pin table and are recorded as unconnected.; The BS pin type (power_out) and the SW pin type (output) are engineering classifications inferred fr",
          "exposed pad 9 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 10,
        "cost_usd": 0.0479,
        "at": "2026-10-09T12:33:44"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589835277830291456",
        "pages": 10,
        "sha256": "4d03ffe332e40048",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "mt2499a.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.9,
          4.9,
          1.65
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f1718a42c5ea007e8e2dd672ac39a1bb358ee4849bd53c42e21ce83e0e5df7a9",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "mt2499a-etched.step",
        "role": "eda",
        "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": "566b162a190de9e39bc97631e8f6e1c4aa264b134da8d5e6870255bb4325039b",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Aerosemi",
      "Package": "ESOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "4d03ffe332e40048",
      "rows": [
        {
          "name": "Input Voltage Range",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 4.5,
          "typ": null,
          "max": 21,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Supply Current in Operation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.4,
          "max": 0.6,
          "conditions": "VEN=2.0V, VFB=1.1V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Regulated Feedback Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.9,
          "typ": 0.925,
          "max": 0.95,
          "conditions": "TA = 25°C, 4.5V≤VIN ≤21V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "OVP",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 22,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-Side Switch Leakage Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0,
          "max": 10,
          "conditions": "VEN=0V, VSW=0V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Supply Voltage (absolute maximum)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 23,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "EN Voltages (absolute maximum)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 23,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "FB Voltages (absolute maximum)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Junction Temperature",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 150,
          "conditions": "Note 2",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating Temperature Range",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 85,
          "conditions": "Listed under Absolute Maximum Ratings",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "ESD HBM (Human Body Model)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "kV",
          "min": null,
          "typ": null,
          "max": 2,
          "conditions": "Human Body Model",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Supply Current in Shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "VEN =0 or EN = GND",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High-Side Switch On-Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 75,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low-Side Switch On-Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 55,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Upper Switch Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 5.8,
          "max": null,
          "conditions": "Minimum Duty Cycle",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Oscillation Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 0.34,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 92,
          "max": null,
          "conditions": "VFB=0.6V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN Shutdown Threshold Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.25,
          "max": null,
          "conditions": "VEN Rising",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN Shutdown Threshold Voltage Hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Under Voltage Lockout Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 4.2,
          "max": null,
          "conditions": "VIN Rising",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Input Under Voltage Lockout Threshold Hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Minimum On-Time",
          "symbol": "",
          "kind": "electrical",
          "unit": "nS",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Soft-Start",
          "symbol": "",
          "kind": "electrical",
          "unit": "mS",
          "min": null,
          "typ": 1,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 175,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance θJC",
          "symbol": "θJC",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal Resistance θJA",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 50,
          "max": null,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        }
      ]
    }
  },
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  "discovery_triggers": [
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  "discovery_pitch": "MT2499A (Aerosemi) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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