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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"title": "MP8009GV-Z",
"brief": "MONOLITHIC POWER SYSTEMS INC. Global Sourcing Parts, QFN-28(4x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"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",
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"model_3d_step": "mp8009gv-z-etched.step",
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"source": "Component Ocean /api/assign-pns",
"digikey": {
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"status": "quota"
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"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."
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{
"number": "6",
"name": "NC",
"type": "unconnected",
"description": "No connection; it is recommended to connect NC pins to GND."
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{
"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)."
}
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
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"pages_sent": 12,
"cost_usd": 0.1762,
"at": "2026-10-22T21:56:12"
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"sha256": "cfb61fe068bde1cb",
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 29,
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"Package": "QFN-28(4x5)",
"Category": "Global Sourcing Parts",
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{
"name": "Supply voltage",
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"kind": "recommended_operating",
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"conditions": "",
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"name": "VCC, GATE, SYNC voltage",
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{
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{
"name": "VDD, RTN, DET, T2P, AUX, GND voltage",
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{
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"conditions": "with respect to GND",
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{
"name": "VCC, GATE, SYNC voltage",
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"max": 18,
"conditions": "with respect to GND",
"source_page": 4,
"source": "datasheet"
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{
"name": "FB voltage",
"symbol": "",
"kind": "absolute_maximum",
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"max": 5.5,
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"source": "datasheet"
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{
"name": "MODE, COMP, SENSE voltage",
"symbol": "",
"kind": "absolute_maximum",
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{
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"kind": "absolute_maximum",
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{
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"kind": "absolute_maximum",
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"min": -6.5,
"typ": null,
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{
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{
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"typ": null,
"max": 2,
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{
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"kind": "absolute_maximum",
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{
"name": "Storage temperature",
"symbol": "",
"kind": "absolute_maximum",
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"min": -55,
"typ": null,
"max": 150,
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{
"name": "Thermal resistance junction-ambient",
"symbol": "θJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 37,
"max": null,
"conditions": "EV8009-V-00A",
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{
"name": "Thermal resistance junction-case",
"symbol": "θJC",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 2,
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{
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"conditions": "JESD51-7",
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{
"name": "Thermal resistance junction-case",
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{
"name": "DET leakage current",
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"kind": "electrical",
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"max": 5,
"conditions": "VDET = VDD = 57V, measure IDET",
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{
"name": "Detection current",
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"min": 96,
"typ": 99,
"max": 102,
"conditions": "VDD = 2.5V, measure ISUPPLY",
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{
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"kind": "electrical",
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"min": 395,
"typ": 410,
"max": 425,
"conditions": "VDD = 10.1V, measure ISUPPLY",
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"source": "datasheet"
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{
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"min": 1.1,
"typ": 1.16,
"max": 1.21,
"conditions": "13V < VDD < 21V, 1mA < ICLASS < 42mA",
"source_page": 5,
"source": "datasheet"
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{
"name": "Classification current",
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"min": 1.8,
"typ": 2,
"max": 2.4,
"conditions": "RCLASS = 578Ω, 13V ≤ VDD ≤ 21V",
"source_page": 5,
"source": "datasheet"
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{
"name": "Classification current",
"symbol": "ICLASS",
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"typ": 10.55,
"max": 11.3,
"conditions": "RCLASS = 110Ω, 13V ≤ VDD ≤ 21V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Classification current",
"symbol": "ICLASS",
"kind": "electrical",
"unit": "mA",
"min": 17.7,
"typ": 18.7,
"max": 19.8,
"conditions": "RCLASS = 62Ω, 13V ≤ VDD ≤ 21V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Classification current",
"symbol": "ICLASS",
"kind": "electrical",
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"min": 26.6,
"typ": 28.15,
"max": 29.7,
"conditions": "RCLASS = 41.2Ω, 13V ≤ VDD ≤ 21V",
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"source": "datasheet"
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{
"name": "Classification current",
"symbol": "ICLASS",
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"conditions": "RCLASS = 28.7Ω, 13V ≤ VDD ≤ 21V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Classification lower threshold",
"symbol": "VCL-ON",
"kind": "electrical",
"unit": "V",
"min": 11.8,
"typ": 12.5,
"max": 13,
"conditions": "Class regulator turns on, VDD rising",
"source_page": 5,
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{
"name": "Classification upper threshold",
"symbol": "VCL-OFF",
"kind": "electrical",
"unit": "V",
"min": 21,
"typ": 22,
"max": 23,
"conditions": "Class regulator turns off, VDD rising",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Mark event reset threshold",
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