MP8009AGV-Z

{
  "schema_version": 1,
  "type": "component",
  "slug": "mp8009agv-z",
  "title": "MP8009AGV-Z",
  "brief": "Monolithic Power Systems Power Over Ethernet (PoE) Controllers, QFN-28(4x5). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "mp8009agv-z"
  ],
  "component": {
    "mpn": "MP8009AGV-Z",
    "manufacturer": "Monolithic Power Systems",
    "package": "QFN-28(4x5)",
    "pin_count": 29,
    "category": "Power Management (PMIC)",
    "subcategory": "Power Over Ethernet (PoE) Controllers",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602761745937555456",
    "parts": {
      "symbol": "mp8009agv-z.kicad_sym",
      "footprint": "mp8009agv-z.kicad_mod",
      "model_3d": "mp8009agv-z-etched.glb",
      "model_3d_plain": "mp8009agv-z.glb",
      "model_3d_step": "mp8009agv-z-etched.step",
      "model_3d_step_plain": "mp8009agv-z.step",
      "lbr": "mp8009agv-z.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Recommended to connect NC pins to GND."
      },
      {
        "number": "2",
        "name": "AUX",
        "type": "input",
        "description": "Auxiliary power input detection. Pulling AUX 2.3V below VDD turns off the hot-swap MOSFET and disables classification (CLASS), forcing T2P and PG active. Voltage range with respect to VDD: -6.5V to +0.3V."
      },
      {
        "number": "3",
        "name": "DET",
        "type": "passive",
        "description": "PoE detection. Connect a 24.9kΩ resistor between VDD and DET for Power over Ethernet detection signature."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Positive power supply terminal for the PoE input and the controller input power rail. Operating range 0V to 57V; absolute max 100V with respect to GND/VSS."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Recommended to connect NC pins to GND."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Recommended to connect NC pins to GND."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Recommended to connect NC pins to GND."
      },
      {
        "number": "8",
        "name": "MODE",
        "type": "input",
        "description": "Primary-side regulation, secondary-side regulation, and dead time selection. Float MODE for PSR; connect a resistor from MODE to GND for SSR. Also sets dead time between GATE and SYNC."
      },
      {
        "number": "9",
        "name": "COMP",
        "type": "output",
        "description": "Loop compensation. Functions as the error amplifier (EA) output during PSR. Pulled up to 5V internally via a 10kΩ resistor during SSR."
      },
      {
        "number": "10",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback and over-voltage protection monitor. Connect a resistor divider from the sense winding to regulate VOUT during PSR; the internal EA is disabled during SSR. FB detects the OVP signal during both PSR and SSR. Voltage range -0.5V to +5.5V."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the controller."
      },
      {
        "number": "12",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the controller."
      },
      {
        "number": "13",
        "name": "SYNC",
        "type": "output",
        "description": "Synchronous MOSFET gate driver output. 0.8A drive capability; absolute max -0.3V to +18V with respect to GND."
      },
      {
        "number": "14",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Recommended to connect NC pins to GND."
      },
      {
        "number": "15",
        "name": "GATE",
        "type": "output",
        "description": "Main MOSFET gate driver output. 2A drive capability; absolute max -0.3V to +18V with respect to GND."
      },
      {
        "number": "16",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Recommended to connect NC pins to GND."
      },
      {
        "number": "17",
        "name": "VCC",
        "type": "power_in",
        "description": "DC/DC internal circuit supply. Powered by an internal LDO regulator from VDD; connect a bypass capacitor CVCC between VCC and GND (≥1µF for flyback, 4.7µF for forward). May be powered externally to reduce LDO loss. Absolute max +18V."
      },
      {
        "number": "18",
        "name": "SENSE",
        "type": "input",
        "description": "Primary current sense, PSR output voltage compensation, and frequency dithering setting. Configures VOUT compensation and frequency dithering via resistors (RREG, RSENSE) between SENSE and GND."
      },
      {
        "number": "19",
        "name": "PG",
        "type": "output",
        "description": "PD supply power good indication (open-drain). Enables the DC/DC converter internally; pulled up via an internal current source when the PD output is good. Float PG for most applications. Absolute max +6.5V; sink current 0.5mA."
      },
      {
        "number": "20",
        "name": "RTN",
        "type": "power_out",
        "description": "PD hot-swap MOSFET drain (internal pass MOSFET output to the DC/DC converter return). Tie RTN and GND together and connect the exposed thermal pad to RTN/GND for thermal dissipation. Absolute max -0.3V to +100V with respect to VSS."
      },
      {
        "number": "21",
        "name": "RTN",
        "type": "power_out",
        "description": "PD hot-swap MOSFET drain (internal pass MOSFET output). Tie RTN and GND together and connect the exposed thermal pad to RTN/GND for thermal dissipation."
      },
      {
        "number": "22",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Recommended to connect NC pins to GND."
      },
      {
        "number": "23",
        "name": "VSS",
        "type": "power_in",
        "description": "PoE input power rail negative supply terminal (PoE return)."
      },
      {
        "number": "24",
        "name": "VSS",
        "type": "power_in",
        "description": "PoE input power rail negative supply terminal (PoE return)."
      },
      {
        "number": "25",
        "name": "FTY",
        "type": "passive",
        "description": "Factory use only. Connect FTY to VSS. Absolute max -0.3V to +6.5V with respect to VSS."
      },
      {
        "number": "26",
        "name": "CLASS",
        "type": "passive",
        "description": "PoE classification. Connect a resistor between CLASS and VSS to configure the classification current (ICLASS). Absolute max -0.3V to +6.5V with respect to VSS."
      },
      {
        "number": "27",
        "name": "NC",
        "type": "unconnected",
        "description": "Not connected. Recommended to connect NC pins to GND."
      },
      {
        "number": "28",
        "name": "T2P",
        "type": "output",
        "description": "Type-2 power-sourcing equipment indication (open-drain). Pulled down to VSS to indicate the presence of a wall adapter or Type-2 PSE. Sink current 10mA max."
      },
      {
        "number": "EP",
        "name": "EP",
        "type": "power_in",
        "description": "Exposed thermal pad. Connect to RTN and GND to improve thermal dissipation."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602761745937555456",
        "pages": 41,
        "sha256": "96d79ad4b1a24775",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 29,
        "described": 29,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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      {
        "file": "mp8009agv-z-etched.step",
        "role": "eda",
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    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Monolithic Power Systems",
      "Package": "QFN-28(4x5)",
      "Category": "Power Management (PMIC)",
      "Pins": "29"
    }
  },
  "variants": [
    {
      "mpn": "MP8009AGV-ZZ",
      "kind": "packaging"
    }
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  "sections": [
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  "discovery_triggers": [
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  "discovery_pitch": "MP8009AGV-Z (Monolithic Power Systems) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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    "path": "docs/hero.png"
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  "visibility": {
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  "updated_at": "2026-09-25T02:20:09.494Z"
}