component
MP4315GRE-Z
Public Made by Adomby adom
Monolithic Power Systems DC-DC Converters, QFN-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "MP4315GRE-Z",
"brief": "Monolithic Power Systems DC-DC Converters, QFN-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"mp4315gre-z",
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"manufacturer": "Monolithic Power Systems",
"package": "QFN-20(4x4)",
"pin_count": 21,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
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"footprint": "mp4315gre-z.kicad_mod",
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"lcsc": "C3191994",
"digikey": "1589-MP4315GRE-ZTR-ND",
"mouser": "946-MP4315GRE-Z"
},
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"source": "Component Ocean /api/assign-pns",
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"status": "found",
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"status": "found"
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},
"pins": [
{
"number": "1",
"name": "MODE",
"type": "input",
"description": "Selects forced continuous conduction mode (FCCM) when pulled high or advanced asynchronous mode (AAM) when pulled low under light loads, and must not be left floating."
},
{
"number": "2",
"name": "SYNCIN",
"type": "input",
"description": "Accepts a 350kHz to 1000kHz clock to synchronize the internal oscillator and supports multi-phase operation; connect to GND if unused and do not float."
},
{
"number": "3",
"name": "VIN",
"type": "power_in",
"description": "Input supply for the internal control circuitry and the power switch connected to SW, rated 3.3V to 45V, with a decoupling capacitor recommended from VIN to ground."
},
{
"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": "Bootstrap positive supply for the high-side MOSFET; a bypass capacitor must be connected between BST and SW, sized per the datasheet BST diode and resistor section."
},
{
"number": "7",
"name": "SW",
"type": "output",
"description": "Switch node, the output of the internal power switch."
},
{
"number": "8",
"name": "SW",
"type": "output",
"description": "Switch node, the output of the internal power switch."
},
{
"number": "9",
"name": "EN",
"type": "input",
"description": "Enable input that shuts the device down when pulled below 0.85V and enables it when pulled above 1V."
},
{
"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 switch connected to SW, rated 3.3V to 45V, with a decoupling capacitor recommended from VIN to ground."
},
{
"number": "13",
"name": "SYNCO",
"type": "output",
"description": "Outputs a clock 180° out of phase with the internal oscillator (or the inverse of the SYNCIN clock); float if not used."
},
{
"number": "14",
"name": "PG",
"type": "output",
"description": "Open-drain power good output that requires a pull-up resistor; it goes high when VOUT is within 93% to 106% of nominal and low when VOUT is above 107.5% or below 91%."
},
{
"number": "15",
"name": "NC",
"type": "unconnected",
"description": "Not internally connected, but must be tied to VCC or the output (≥3V) and must not be left floating."
},
{
"number": "16",
"name": "VCC",
"type": "power_out",
"description": "Bias supply that provides 4.9V to the internal control circuit and gate drivers, requiring a decoupling capacitor placed close to the pin."
},
{
"number": "17",
"name": "AGND",
"type": "power_in",
"description": "Analog ground for the control circuitry."
},
{
"number": "18",
"name": "FB",
"type": "input",
"description": "Feedback input connected to the center point of the external resistor divider, with a feedback threshold voltage of about 0.815V."
},
{
"number": "19",
"name": "SS",
"type": "passive",
"description": "Soft-start input; a capacitor from SS to GND sets the soft-start time, as the MP4315 sources 6µA into it at start-up to limit inrush current."
},
{
"number": "20",
"name": "FREQ",
"type": "input",
"description": "Switching frequency configuration; a resistor from this pin to GND sets fSW per the fSW vs. RFREQ curve in the datasheet."
},
{
"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": {
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"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: Datasheet calls pin 15 'NC' (not connected) but also requires it to be tied to VCC or the output (≥3; Pin type for BST (bootstrap) was not stated explicitly in the datasheet; typed as passive as a bypas; Multi-pad pins are listed as one entry per physical pad number as printed in the pin function table;",
"exposed pad 21 added from the footprint"
],
"pages_sent": 8,
"cost_usd": 0.0472,
"at": "2026-10-20T10:28:35"
},
"datasheet": {
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"pages": 34,
"sha256": "5ea06c2bcd722c63",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 21,
"cites_pages": true,
"refuses_to_fabricate": true
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"checked": "2026-10-20",
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{
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"metadata": {
"specs": {
"Manufacturer": "Monolithic Power Systems",
"Package": "QFN-20(4x4)",
"Category": "Power Management (PMIC)",
"Pins": "21"
},
"appearance": {
"contacts": {
"quote": "as possible to the VIN and GND pins. 2. Connect a large copper ground plane",
"page": 30,
"doc": "ds.pdf",
"material": "copper"
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"name": "VIN under-voltage lockout (UVLO) rising threshold",
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{
"name": "VCC regulation",
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"min": null,
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"conditions": "IVCC = 30mA",
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{
"name": "VIN quiescent current (sleep mode)",
"symbol": "IQ",
"kind": "electrical",
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"typ": 18,
"max": 26,
"conditions": "VFB = 0.85V, no load, sleep mode",
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"conditions": "EN = 0V",
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{
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"min": 0.807,
"typ": 0.815,
"max": 0.823,
"conditions": "VIN = 3.3V to 45V, TJ = 25°C",
"source_page": 6,
"source": "datasheet"
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{
"name": "FB voltage",
"symbol": "VFB",
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"unit": "V",
"min": 0.799,
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"max": 0.831,
"conditions": "VIN = 3.3V to 45V",
"source_page": 6,
"source": "datasheet"
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{
"name": "FB current",
"symbol": "IFB",
"kind": "electrical",
"unit": "nA",
"min": -50,
"typ": 0,
"max": 50,
"conditions": "VFB = 0.85V",
"source_page": 6,
"source": "datasheet"
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{
"name": "Switching frequency",
"symbol": "fSW",
"kind": "electrical",
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"min": 420,
"typ": 470,
"max": 520,
"conditions": "RFREQ = 62kΩ",
"source_page": 6,
"source": "datasheet"
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{
"name": "Switching frequency",
"symbol": "fSW",
"kind": "electrical",
"unit": "kHz",
"min": 820,
"typ": 1000,
"max": 1180,
"conditions": "RFREQ = 26.1kΩ",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SYNCIN clock range",
"symbol": "fSYNC",
"kind": "electrical",
"unit": "kHz",
"min": 350,
"typ": null,
"max": 1000,
"conditions": "External clock",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SYNCO high voltage",
"symbol": "VSYNCO_HIGH",
"kind": "electrical",
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"min": 3.3,
"typ": null,
"max": 4.5,
"conditions": "ISYNCO = -1mA",
"source_page": 6,
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{
"name": "High-side current limit",
"symbol": "ILIMIT",
"kind": "electrical",
"unit": "A",
"min": 6.4,
"typ": 8,
"max": 9.6,
"conditions": "Duty cycle = 30%",
"source_page": 6,
"source": "datasheet"
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{
"name": "Low-side valley current limit",
"symbol": "ILIMIT_VALLEY",
"kind": "electrical",
"unit": "A",
"min": 4.8,
"typ": 6,
"max": 7.2,
"conditions": "",
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{
"name": "Zero-current detection (ZCD) threshold",
"symbol": "IZCD",
"kind": "electrical",
"unit": "A",
"min": -0.15,
"typ": 0.1,
"max": 0.35,
"conditions": "AAM",
"source_page": 7,
"source": "datasheet"
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{
"name": "Low-side reverse current limit",
"symbol": "ILIMIT_REVERSE",
"kind": "electrical",
"unit": "A",
"min": 2,
"typ": 4.5,
"max": 7,
"conditions": "FCCM",
"source_page": 7,
"source": "datasheet"
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{
"name": "Switch leakage current",
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"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.01,
"max": 1,
"conditions": "",
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{
"name": "HS-FET on resistance",
"symbol": "RON_HS",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 48,
"max": 80,
"conditions": "VBST - VSW = 5V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "LS-FET on resistance",
"symbol": "RON_LS",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 20,
"max": 40,
"conditions": "VCC = 5V",
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{
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"min": 4,
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"conditions": "VSS = 0V",
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{
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{
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"kind": "electrical",
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"min": 0.65,
"typ": 0.85,
"max": 1.05,
"conditions": "",
"source_page": 7,
"source": "datasheet"
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{
"name": "PG rising threshold (VFB/VREF)",
"symbol": "PGRISING",
"kind": "electrical",
"unit": "%",
"min": 88.5,
"typ": 93,
"max": 97.5,
"conditions": "VFB rising",
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{
"name": "PG rising threshold (VFB/VREF)",
"symbol": "PGRISING",
"kind": "electrical",
"unit": "%",
"min": 101.5,
"typ": 106,
"max": 110.5,
"conditions": "VFB falling",
"source_page": 7,
"source": "datasheet"
},
{
"name": "PG falling threshold (VFB/VREF)",
"symbol": "PGFALLING",
"kind": "electrical",
"unit": "%",
"min": 86.5,
"typ": 91,
"max": 95.5,
"conditions": "VFB falling",
"source_page": 7,
"source": "datasheet"
},
{
"name": "PG falling threshold (VFB/VREF)",
"symbol": "PGFALLING",
"kind": "electrical",
"unit": "%",
"min": 103,
"typ": 107.5,
"max": 112,
"conditions": "VFB rising",
"source_page": 7,
"source": "datasheet"
},
{
"name": "PG output voltage low",
"symbol": "VPG_LOW",
"kind": "electrical",
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"min": null,
"typ": 0.1,
"max": 0.3,
"conditions": "ISINK = 1mA",
"source_page": 7,
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{
"name": "VIN and EN voltage",
"symbol": "VIN, EN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
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{
"name": "All other pins voltage",
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{
"name": "Continuous power dissipation (QFN-20 4mmx4mm)",
"symbol": "",
"kind": "absolute_maximum",
"unit": "W",
"min": null,
"typ": null,
"max": 5.4,
"conditions": "TA = 25°C",
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{
"name": "Operating junction temperature",
"symbol": "",
"kind": "absolute_maximum",
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"min": null,
"typ": null,
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{
"name": "Lead temperature",
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{
"name": "Storage temperature",
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{
"name": "ESD human body model (HBM)",
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{
"name": "ESD charged device model (CDM)",
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"min": -750,
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{
"name": "Supply voltage VIN",
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"typ": null,
"max": 45,
"conditions": "",
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{
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{
"name": "Operating junction temperature (TJ)",
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"min": -40,
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