component
MPQ2908AGL-Z
Public Made by Adomby adom
Monolithic Power Systems DC-DC Converters, QFN-20(3x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"title": "MPQ2908AGL-Z",
"brief": "Monolithic Power Systems DC-DC Converters, QFN-20(3x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
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"manufacturer": "Monolithic Power Systems",
"package": "QFN-20(3x4)",
"pin_count": 21,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
"datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8602673990050213888",
"parts": {
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"digikey": "MPQ2908AGL-Z-ND",
"mouser": "946-MPQ2908AGL-Z"
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{
"number": "1",
"name": "VCC2",
"type": "power_in",
"description": "External supply input for the internal VCC1 regulator; VCC2 above 4.7V disables the VIN-powered regulator and no supply greater than 12V may be connected."
},
{
"number": "2",
"name": "VCC1",
"type": "power_out",
"description": "Internal bias supply that requires a ≥1µF decoupling capacitor between VCC1 and PGND."
},
{
"number": "3",
"name": "SGND",
"type": "power_in",
"description": "Low-noise ground reference that should be connected to the VOUT side of the output capacitors."
},
{
"number": "4",
"name": "SS",
"type": "passive",
"description": "Soft-start control input; an external capacitor from SS to SGND sets the soft-start period, charged by a 4µA internal source."
},
{
"number": "5",
"name": "COMP",
"type": "passive",
"description": "Regulation loop compensation pin, where an R-C network is connected from COMP to SGND."
},
{
"number": "6",
"name": "FB",
"type": "input",
"description": "Feedback input to the error amplifier, compared against the internal 0.8V reference to set the output voltage."
},
{
"number": "7",
"name": "CCM/AAM",
"type": "input",
"description": "Floating or tying to VCC1 selects CCM operation, while a resistor to SGND giving at least 480mV selects AAM mode."
},
{
"number": "8",
"name": "FREQ",
"type": "passive",
"description": "A resistor from FREQ to SGND sets the switching frequency, programmable from 100kHz to 1000kHz."
},
{
"number": "9",
"name": "PG",
"type": "output",
"description": "Open-drain power good output that is pulled low when the output is outside ±10% of nominal and should connect through a resistor (e.g. 100kΩ) to a source no more than 5V."
},
{
"number": "10",
"name": "ILIM",
"type": "input",
"description": "Sets the fixed current-sense limit: 25mV when tied to SGND, 50mV when tied to VCC1, and 75mV when floating."
},
{
"number": "11",
"name": "SYNCO",
"type": "output",
"description": "Frequency synchronous output that provides a 180° out-of-phase clock when the part operates in CCM for dual-channel operation."
},
{
"number": "12",
"name": "SENSE-",
"type": "input",
"description": "Negative current-sense input with SENSE+/- rated to 28V and the differential SENSE+ to SENSE- voltage limited to -0.7V to +0.7V."
},
{
"number": "13",
"name": "SENSE+",
"type": "input",
"description": "Positive current-sense input with SENSE+/- rated to 28V and the differential SENSE+ to SENSE- voltage limited to -0.7V to +0.7V."
},
{
"number": "14",
"name": "PGND",
"type": "power_in",
"description": "High-current ground reference for the internal low-side driver and VCC1 regulator, connected directly to the negative terminal of the VCC1 decoupling capacitor."
},
{
"number": "15",
"name": "BG",
"type": "output",
"description": "Bottom gate driver output that drives the synchronous N-channel MOSFET gate, limited to -0.3V to VCC1 + 0.3V."
},
{
"number": "16",
"name": "SW",
"type": "passive",
"description": "Switch node that is the reference for the VBST supply and the high-current return for the bootstrapped switch, rated -0.3V to 65V."
},
{
"number": "17",
"name": "TG",
"type": "output",
"description": "Top gate drive output that floats on SW to drive the top N-channel MOSFET gate, limited to VSW - 0.3V to VBST + 0.3V."
},
{
"number": "18",
"name": "BST",
"type": "power_in",
"description": "Positive supply for the floating high-side driver, limited to VIN + 6.5V, with BST - SW limited to 6.5V and an external diode to BST required to charge the bootstrap capacitor."
},
{
"number": "19",
"name": "IN",
"type": "power_in",
"description": "Input supply for the 4V to 60V operating range (65V absolute maximum), requiring a ceramic capacitor to prevent large input voltage spikes."
},
{
"number": "20",
"name": "EN/SYNC",
"type": "input",
"description": "Enable input with a 1.22V rising threshold and 130mV hysteresis that also accepts an external sync clock from 100kHz to 1000kHz, rated to 55V."
},
{
"number": "21",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
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"extractor": "extract_pins 0.3",
"primary_model": "claude-haiku-5-5",
"primary_mode": "text",
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"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: The exposed pad on the bottom of the QFN-20 package is not given a numbered pin and is omitted from ; The ordered MPQ2908AGL-Z is the non-wettable flank QFN-20 (3mmx4mm) variant; the '-Z' suffix denotes; Pages 5-12 of the datasheet were not included in the provided text, so the pinout was derived only f",
"exposed pad 21 added from the footprint"
],
"pages_sent": 16,
"cost_usd": 0.0866,
"at": "2026-10-20T22:01:18"
},
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"sha256": "35bc526adade273e",
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},
"cad": "KiCad official (CC-BY-SA 4.0)",
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}
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"Package": "QFN-20(3x4)",
"Category": "Power Management (PMIC)",
"Pins": "21"
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"name": "SENSE+ / -",
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"name": "Differential sense (SENSE+ to SENSE-)",
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{
"name": "BG",
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"min": -0.3,
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{
"name": "All other pins",
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{
"name": "Storage temperature",
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"min": -65,
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"max": 175,
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{
"name": "Supply voltage (VIN)",
"symbol": "VIN",
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"unit": "V",
"min": 4,
"typ": null,
"max": 60,
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{
"name": "Output voltage (VOUT)",
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{
"name": "Supply voltage for (VCC2)",
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"min": 4.7,
"typ": null,
"max": 12,
"conditions": "",
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{
"name": "Operating junction temp.",
"symbol": "TJ",
"kind": "recommended_operating",
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"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 3,
"source": "datasheet"
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{
"name": "Thermal resistance junction-to-ambient, QFN-20 (3mmx4mm)",
"symbol": "θJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 48,
"max": null,
"conditions": "JESD51-7, 4-layer PCB",
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{
"name": "VIN UVLO threshold (rising)",
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"kind": "electrical",
"unit": "V",
"min": 4,
"typ": 4.5,
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{
"name": "VIN UVLO threshold (falling)",
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"max": 3.95,
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{
"name": "VIN supply current with VCC2 bias",
"symbol": "IQ_VCC2",
"kind": "electrical",
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"min": null,
"typ": 25,
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"conditions": "VCC2 = 12V, external bias, VAAM = 5V, VFB = 0.84V, SENSE+ = SENSE- = 0V, no switching",
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{
"name": "VIN supply current without VCC2 bias",
"symbol": "IQ",
"kind": "electrical",
"unit": "μA",
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"typ": 750,
"max": 1000,
"conditions": "VCC2 = 0V, VFB = 0.84V, VAAM = 5V, SENSE+ = SENSE- = 0V, no switching",
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{
"name": "VIN AAM current",
"symbol": "IQ_AAM",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 250,
"max": 350,
"conditions": "VCC2 = 0V, VAAM = 0.6V, VFB = 0.84V, SENSE+ = SENSE- = 12V, no switching",
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{
"name": "VIN shutdown current",
"symbol": "ISHDN",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 0.5,
"max": 5,
"conditions": "VEN = 0V",
"source_page": 4,
"source": "datasheet"
},
{
"name": "VCC1 regulator output voltage from VIN",
"symbol": "VCC1_VIN",
"kind": "electrical",
"unit": "V",
"min": 4.5,
"typ": 5,
"max": 5.5,
"conditions": "VIN > 6V, load = 0 to 50mA",
"source_page": 4,
"source": "datasheet"
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{
"name": "VCC1 regulator load regulation from VIN",
"symbol": "",
"kind": "electrical",
"unit": "%",
"min": null,
"typ": 1,
"max": 3,
"conditions": "Load = 0 to 50mA, VCC2 floating or connected to SGND",
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{
"name": "VCC1 regulator load regulation from VCC2",
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{
"name": "VCC2 UVLO threshold (rising)",
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"kind": "electrical",
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"min": 4.3,
"typ": 4.7,
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{
"name": "VCC2 UVLO threshold (falling)",
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"min": 4.05,
"typ": 4.45,
"max": 4.75,
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{
"name": "VCC2 supply current",
"symbol": "IVCC2",
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"unit": "μA",
"min": null,
"typ": 800,
"max": 1100,
"conditions": "VAAM = 5V, VFB = 0.84V, SENSE+ = SENSE- = 12V, VCC2 = 12V, no switching",
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{
"name": "VCC2 supply current",
"symbol": "IVCC2",
"kind": "electrical",
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"min": null,
"typ": 200,
"max": 300,
"conditions": "VAAM = 0.6V, VFB = 0.84V, SENSE+ = SENSE- = 12V, VCC2 = 12V, no switching",
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{
"name": "Feedback voltage",
"symbol": "VFB",
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"min": 0.788,
"typ": 0.8,
"max": 0.812,
"conditions": "4V ≤ VIN ≤ 60V",
"source_page": 4,
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},
{
"name": "Enable threshold (rising)",
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"unit": "V",
"min": 1.16,
"typ": 1.22,
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{
"name": "Enable threshold (falling)",
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"min": 1.03,
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{
"name": "Enable input current",
"symbol": "IEN",
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"min": null,
"typ": 2,
"max": 5,
"conditions": "VEN = 2V",
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},
{
"name": "Enable turn-off delay",
"symbol": "tOFF",
"kind": "timing",
"unit": "μs",
"min": 10,
"typ": 20,
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{
"name": "Operating frequency",
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"conditions": "RFREQ = 45.3kΩ",
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{
"name": "Maximum programmable frequency",
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{
"name": "Minimum programmable frequency",
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"min": 100,
"typ": null,
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