component
MP9928GF-Z
Public Made by Adomby adom
Monolithic Power Systems DC-DC Converters, TSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"type": "component",
"slug": "mp9928gf-z",
"title": "MP9928GF-Z",
"brief": "Monolithic Power Systems DC-DC Converters, TSSOP-20-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
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"power management (pmic)",
"mp9928gf-z",
"factory-2.0.0",
"extractor-text"
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"component": {
"mpn": "MP9928GF-Z",
"manufacturer": "Monolithic Power Systems",
"package": "TSSOP-20-EP",
"pin_count": 21,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fb854f54317abbb428ce136b45c36d9f.pdf",
"parts": {
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"model_3d_step_plain": "mp9928gf-z.step",
"lbr": "mp9928gf-z.lbr"
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"distributor_links": {
"lcsc": "C3194471",
"digikey": "1589-1749-2-ND",
"mouser": "946-MP9928GF-Z"
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"distributor_check": {
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"source": "Component Ocean /api/assign-pns",
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"status": "found",
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"pins": [
{
"number": "1",
"name": "IN",
"type": "power_in",
"description": "Input supply: the MP9928 operates from a 4V to 60V input, and a ceramic capacitor is needed to prevent large voltage spikes from appearing at the input."
},
{
"number": "2",
"name": "EN/SYNC",
"type": "input",
"description": "Enable input with a 1.22V threshold and 130mV of hysteresis, usable for external UVLO, and an applied external sync clock makes the internal clock follow the sync frequency."
},
{
"number": "3",
"name": "VCC2",
"type": "power_in",
"description": "External power supply for the internal VCC1 regulator, which disables the VIN-derived supply when VCC2 is higher than 4.7V; do not connect more than 12V to this pin."
},
{
"number": "4",
"name": "VCC1",
"type": "power_out",
"description": "Internal bias supply that must be decoupled with a 1µF or greater ceramic capacitor, with capacitance no more than 4.7µF."
},
{
"number": "5",
"name": "SGND",
"type": "power_in",
"description": "Low-noise signal ground reference."
},
{
"number": "6",
"name": "SS",
"type": "passive",
"description": "Soft-start control input, where an external capacitor from SS to SGND programs the soft-start period and is charged by an internal 4µA current source."
},
{
"number": "7",
"name": "COMP",
"type": "passive",
"description": "Compensation pin for the regulation control loop, where an RC network is connected from COMP to GND."
},
{
"number": "8",
"name": "FB",
"type": "input",
"description": "Feedback input to the error amplifier, where an external resistive divider from output to GND is compared to the internal +0.8V reference to set the regulation voltage."
},
{
"number": "9",
"name": "CCM/AAM",
"type": "input",
"description": "Mode-select pin: connecting to VCC1 or floating selects CCM, while a resistor to GND giving a low level selects AAM, with the AAM voltage no less than 480mV."
},
{
"number": "10",
"name": "FREQ",
"type": "passive",
"description": "A resistor connected between FREQ and GND sets the switching frequency."
},
{
"number": "11",
"name": "PG",
"type": "output",
"description": "Open-drain power good output that is pulled low when the regulator output falls outside about ±10% of its nominal value."
},
{
"number": "12",
"name": "ILIM",
"type": "input",
"description": "Current sense voltage limit select: connecting to GND sets 25mV, connecting to VCC1 sets 50mV, and floating sets 75mV at maximum output current."
},
{
"number": "13",
"name": "SYNCO",
"type": "output",
"description": "Outputs a clock 180° out-of-phase with the internal or external sync clock in CCM or DCM (not Sleep mode) for dual-channel co-pack, and outputs a DC voltage in other cases such as Sleep mode, Low Dropout mode, and fault protections."
},
{
"number": "14",
"name": "SENSE-",
"type": "input",
"description": "Negative input for the current sense, with the sensed inductor current limit threshold determined by the status of the ILIM pin."
},
{
"number": "15",
"name": "SENSE+",
"type": "input",
"description": "Positive input for the current sense, with the sensed inductor current limit threshold determined by the status of the ILIM pin."
},
{
"number": "16",
"name": "PGND",
"type": "power_in",
"description": "Power ground reference for the internal low-side switch driver and VCC1 regulator, to be connected directly to the negative terminal of the VCC1 decoupling capacitor."
},
{
"number": "17",
"name": "BG",
"type": "output",
"description": "Bottom gate driver output that connects to the gate of the synchronous N-channel MOSFET."
},
{
"number": "18",
"name": "SW",
"type": "passive",
"description": "Switch node that serves as the reference for the VBST supply and the high-current return for the bootstrapped switch."
},
{
"number": "19",
"name": "TG",
"type": "output",
"description": "Top gate drive output for the top N-channel MOSFET, driven from the BST capacitor and returned to SW for a true floating drive."
},
{
"number": "20",
"name": "BST",
"type": "power_out",
"description": "Bootstrap pin that is the positive supply for the internal floating high-side driver, with a bypass capacitor connected between BST and SW and charged from VCC1 through a diode."
},
{
"number": "21",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
}
],
"provenance": {
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"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 datasheet pin-function table gives numbered pins 1-20 for TSSOP only; the exposed pad (EP) of th; Pin types for the switch node (SW), SS, COMP and FREQ were assigned as passive because the datasheet; The ordering part MP9928GF-Z is the TSSOP-20 EP (GF suffix, -Z for tape and reel), so the TSSOP pin ",
"exposed pad 21 added from the footprint"
],
"pages_sent": 13,
"cost_usd": 0.0744,
"at": "2026-11-05T18:43:11"
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"sha256": "61fba8c327700363",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
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"described": 21,
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"refuses_to_fabricate": true
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"viewers": {
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"checked": "2026-11-05",
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{
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],
"package_dims": {
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"source_page": 24,
"D": {
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"E1": {
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"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
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"metadata": {
"specs": {
"Manufacturer": "Monolithic Power Systems",
"Package": "TSSOP-20-EP",
"Category": "Power Management (PMIC)",
"Pins": "21"
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"name": "Supply voltage (VCC1) absolute maximum",
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"name": "SENSE+ / - absolute maximum",
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"name": "Differential sense (SENSE+ to SENSE-) absolute maximum",
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{
"name": "All other pins absolute maximum",
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{
"name": "Continuous power dissipation TSSOP-20 EP",
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"min": null,
"typ": null,
"max": 3.1,
"conditions": "TA = +25°C",
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{
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{
"name": "VIN UVLO threshold (rising)",
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{
"name": "VIN UVLO threshold (falling)",
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{
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"min": 25,
"typ": null,
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"conditions": "VCC2 = 12V, external bias",
"source_page": 4,
"source": "datasheet"
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{
"name": "VIN supply current without VCC2 bias",
"symbol": "IQ",
"kind": "electrical",
"unit": "μA",
"min": 750,
"typ": null,
"max": 1000,
"conditions": "VCC2 = 0, VFB = 0.84V, VAAM = 5V, SENSE+ = SENSE- = 0.3V",
"source_page": 4,
"source": "datasheet"
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{
"name": "VIN AAM current",
"symbol": "IQ_AAM",
"kind": "electrical",
"unit": "μA",
"min": 250,
"typ": null,
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"conditions": "VAAM=0.6V, VFB=0.84V, SENSE+ = SENSE- = 0.3V",
"source_page": 4,
"source": "datasheet"
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{
"name": "VIN shutdown current",
"symbol": "ISHDN",
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"unit": "μA",
"min": 0.5,
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"max": 3,
"conditions": "VEN = 0V",
"source_page": 4,
"source": "datasheet"
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{
"name": "VCC1 regulator load regulation from VIN",
"symbol": "",
"kind": "electrical",
"unit": "%",
"min": 1,
"typ": null,
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"conditions": "Load = 0 to 50mA, VCC2 floating or connects to GND",
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{
"name": "VCC1 regulator load regulation from VCC2",
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{
"name": "VCC2 UVLO threshold (rising)",
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{
"name": "VCC2 supply current",
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"min": 800,
"typ": null,
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"conditions": "VAAM = 5V, VFB = 0.84V, VCC2 = 12V",
"source_page": 4,
"source": "datasheet"
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{
"name": "VCC2 supply current",
"symbol": "IVCC2",
"kind": "electrical",
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"min": 200,
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"conditions": "VAAM = 0.6V, VFB = 0.84V, VCC2 = 12V",
"source_page": 4,
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{
"name": "Feedback voltage (TJ=25°C)",
"symbol": "VFB",
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"min": 0.792,
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"max": 0.808,
"conditions": "4V ≤ VIN ≤ 60V, TJ=25°C",
"source_page": 4,
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{
"name": "Feedback voltage (TJ=-40°C to 125°C)",
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"conditions": "4V ≤ VIN ≤ 60V, TJ=-40°C to 125°C",
"source_page": 4,
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},
{
"name": "Enable threshold (rising)",
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{
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"min": 1.03,
"typ": 1.09,
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"conditions": "",
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},
{
"name": "Enable turn-off delay",
"symbol": "TOFF",
"kind": "electrical",
"unit": "μs",
"min": 10,
"typ": null,
"max": 15,
"conditions": "",
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{
"name": "Operating frequency",
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"min": 240,
"typ": 300,
"max": 360,
"conditions": "R Freq = 65kΩ",
"source_page": 5,
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},
{
"name": "Sync/EN frequency range",
"symbol": "FSYNC",
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