component
MP8009GV-Z
Public Made by Adomby adom
MONOLITHIC POWER SYSTEMS INC. Global Sourcing Parts, QFN-28(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"description": "MONOLITHIC POWER SYSTEMS INC. Global Sourcing Parts, QFN-28(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
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"global sourcing parts",
"mp8009gv-z",
"factory-2.0.0",
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"component": {
"mpn": "MP8009GV-Z",
"manufacturer": "MONOLITHIC POWER SYSTEMS INC.",
"package": "QFN-28(4x5)",
"pin_count": 29,
"category": "Global Sourcing Parts",
"subcategory": "Global Sourcing Parts",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/aa3df9836a2f82da8941c1afe8e0a936.pdf",
"parts": {
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"footprint": "mp8009gv-z.kicad_mod",
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"model_3d_step": "mp8009gv-z-etched.step",
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"lbr": "mp8009gv-z.lbr"
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"distributor_links": {
"lcsc": "C3189022"
},
"distributor_check": {
"checked_at": "2026-10-22T21:56:23Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": null,
"status": "quota"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
},
{
"number": "2",
"name": "AUX",
"type": "input",
"description": "Auxiliary power input detector; driving VDD - AUX above 2.3V disables the hot-swap MOSFET and CLASS functions and forces T2P and PG active."
},
{
"number": "3",
"name": "DET",
"type": "input",
"description": "Detection pin; connect a 24.9kΩ resistor between VDD and DET for PoE detection."
},
{
"number": "4",
"name": "VDD",
"type": "power_in",
"description": "Positive power supply terminal for PoE and controller input power rail (absolute maximum 100V, recommended 0V to 57V)."
},
{
"number": "5",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
},
{
"number": "6",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
},
{
"number": "7",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
},
{
"number": "8",
"name": "MODE",
"type": "input",
"description": "PSR/SSR mode and dead time setting; float for PSR, or connect to GND via a resistor for SSR."
},
{
"number": "9",
"name": "COMP",
"type": "output",
"description": "Loop compensation pin that is the error amplifier output in PSR mode and is internally pulled to 5V through a 10kΩ resistor in SSR mode."
},
{
"number": "10",
"name": "FB",
"type": "input",
"description": "Output voltage feedback and OVP monitor pin; connect to GND if the OVP function is not used in SSR mode."
},
{
"number": "11",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "12",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "13",
"name": "SYNC",
"type": "output",
"description": "Synchronous MOSFET gate driver pin."
},
{
"number": "14",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
},
{
"number": "15",
"name": "GATE",
"type": "output",
"description": "Main MOSFET gate driver pin."
},
{
"number": "16",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
},
{
"number": "17",
"name": "VCC",
"type": "power_out",
"description": "DC/DC internal circuit supply pin powered through an internal LDO from VDD; bypass with at least 1µF for flyback or 4.7µF for forward, and keep below 16V if externally powered."
},
{
"number": "18",
"name": "SENSE",
"type": "input",
"description": "Current-sense input that also sets PSR VOUT compensation and frequency dither via a resistor to the current sense resistor."
},
{
"number": "19",
"name": "PG",
"type": "output",
"description": "PD supply power good indicator that enables the DC/DC converter internally; recommended to float in most applications."
},
{
"number": "20",
"name": "RTN",
"type": "passive",
"description": "Drain of the PD hot-swap MOSFET; connect RTN to GND."
},
{
"number": "21",
"name": "RTN",
"type": "passive",
"description": "Drain of the PD hot-swap MOSFET; connect RTN to GND."
},
{
"number": "22",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
},
{
"number": "23",
"name": "VSS",
"type": "power_in",
"description": "Negative power supply terminal from the PoE input power rail."
},
{
"number": "24",
"name": "VSS",
"type": "power_in",
"description": "Negative power supply terminal from the PoE input power rail."
},
{
"number": "25",
"name": "FTY",
"type": "input",
"description": "Factory use only; must be connected to VSS."
},
{
"number": "26",
"name": "CLASS",
"type": "passive",
"description": "Classification pin; connect a resistor from CLASS to VSS to configure the classification current."
},
{
"number": "27",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
},
{
"number": "28",
"name": "T2P",
"type": "output",
"description": "Open-drain Type-2 PSE indicator pulled low to VSS to indicate a wall adapter or Type-2 PSE."
},
{
"number": "29",
"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-sonnet-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 thermal pad has no pin number in the datasheet, so it is not listed. The datasheet recom; Pin types for DET, CLASS, RTN, COMP and VCC are inferred from the function descriptions. The datashe"
],
"pages_sent": 12,
"cost_usd": 0.1762,
"at": "2026-10-22T21:56:12"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/aa3df9836a2f82da8941c1afe8e0a936.pdf",
"pages": 39,
"sha256": "cfb61fe068bde1cb",
"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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},
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},
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}