component
MPQ4314GRE-AEC1-Z
Public Made by Adomby adom
MONOLITHIC POWER SYSTEMS INC. Global Sourcing Parts, QFN-20(4x4). 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-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"component": {
"mpn": "MPQ4314GRE-AEC1-Z",
"manufacturer": "MONOLITHIC POWER SYSTEMS INC.",
"package": "QFN-20(4x4)",
"pin_count": 21,
"category": "Global Sourcing Parts",
"subcategory": "Global Sourcing Parts",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/e8bb2dfd653c16bb5d53c5cbe8176589.pdf",
"parts": {
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"lbr": "mpq4314gre-aec1-z.lbr"
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"distributor_links": {
"lcsc": "C5799759",
"digikey": "1589-MPQ4314GRE-AEC1-ZTR-ND",
"mouser": "946-MPQ4314GRE-AEC1Z"
},
"distributor_check": {
"checked_at": "2026-10-30T18:59:11Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "1589-MPQ4314GRE-AEC1-ZTR-ND",
"status": "found",
"lifecycle": "Active"
},
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"pn": "946-MPQ4314GRE-AEC1Z",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "MODE",
"type": "input",
"description": "AAM or FCCM select: pull high for forced continuous conduction mode (FCCM), pull low for advanced asynchronous modulation (AAM) under light loads; do not float this pin."
},
{
"number": "2",
"name": "SYNCIN",
"type": "input",
"description": "SYNC input accepting a 350kHz to 1000kHz clock to synchronize the internal oscillator; do not float, and a ≤51kΩ resistor to GND is recommended if the external clock's pull-down capability is insufficient."
},
{
"number": "3",
"name": "VIN",
"type": "power_in",
"description": "Input supply for the internal control circuitry and the power MOSFET connected to SW; place a decoupling capacitor from VIN to ground as close to the pin as possible."
},
{
"number": "4",
"name": "PGND",
"type": "power_in",
"description": "Power ground for the power stage."
},
{
"number": "5",
"name": "PGND",
"type": "power_in",
"description": "Power ground for the power stage."
},
{
"number": "6",
"name": "BST",
"type": "passive",
"description": "Positive supply for the high-side MOSFET driver; connect a bypass capacitor between BST and SW."
},
{
"number": "7",
"name": "SW",
"type": "output",
"description": "Switch node, the output of the internal power MOSFET."
},
{
"number": "8",
"name": "SW",
"type": "output",
"description": "Switch node, the output of the internal power MOSFET."
},
{
"number": "9",
"name": "EN",
"type": "input",
"description": "Enable input: pulling below the 0.85V threshold shuts down the chip and pulling above the 1V threshold enables it."
},
{
"number": "10",
"name": "PGND",
"type": "power_in",
"description": "Power ground for the power stage."
},
{
"number": "11",
"name": "PGND",
"type": "power_in",
"description": "Power ground for the power stage."
},
{
"number": "12",
"name": "VIN",
"type": "power_in",
"description": "Input supply for the internal control circuitry and the power MOSFET connected to SW; place a decoupling capacitor from VIN to ground as close to the pin as possible."
},
{
"number": "13",
"name": "SYNCO",
"type": "output",
"description": "SYNC output providing a clock 180° out of phase with the internal oscillator (opposite the SYNCIN clock); float if not used."
},
{
"number": "14",
"name": "PG",
"type": "output",
"description": "Open-drain power good output that requires a pull-up to the power source when used; goes high when VOUT is within 95% to 105% of nominal and low when VOUT is above 106.5% or below 93.5%."
},
{
"number": "15",
"name": "NC",
"type": "unconnected",
"description": "Not connected; float this pin."
},
{
"number": "16",
"name": "VCC",
"type": "power_out",
"description": "Bias supply for the internal control circuit and gate drivers; a decoupling capacitor to ground must be placed close to this pin."
},
{
"number": "17",
"name": "AGND",
"type": "power_in",
"description": "Analog ground for the control circuitry."
},
{
"number": "18",
"name": "FB",
"type": "input",
"description": "Feedback input; connect to the center point of the external resistor divider between VOUT and AGND, with a feedback threshold voltage (VFB) of 0.815V, and keep the divider close to FB with no vias on the FB traces."
},
{
"number": "19",
"name": "SS",
"type": "passive",
"description": "Soft-start input; a capacitor from SS to GND sets the soft-start time, and the device sources 13μA from SS at start-up."
},
{
"number": "20",
"name": "FREQ",
"type": "passive",
"description": "Switching frequency configuration; a resistor from this pin to ground sets fSW per the fSW vs. RFREQ curve on page 15."
},
{
"number": "21",
"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-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 package reference drawing on page 3 is garbled in the text extraction, so pin numbers were taken; Pin types were chosen by function because the datasheet does not give KiCad classes. VCC is typed po; Ordering part MPQ4314GRE-AEC1-Z is the tape-and-reel (-Z) version of the QFN-20 (4mmx4mm) wettable-f",
"exposed pad 21 added from the footprint"
],
"pages_sent": 8,
"cost_usd": 0.046,
"at": "2026-10-30T18:58:58"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/e8bb2dfd653c16bb5d53c5cbe8176589.pdf",
"pages": 39,
"sha256": "8c62892d92511281",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 21,
"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
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}