component
MP2918GL-Z
Public Made by Adomby adom
MONOLITHIC POWER SYSTEMS (MPS) Global Sourcing Parts, QFN-20(3x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"number": "1",
"name": "VCC2",
"type": "power_in",
"description": "External power supply for the internal VCC1 regulator that disables power from VIN while higher than 4.7V; do not connect a supply greater than 12V."
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{
"number": "2",
"name": "VCC1",
"type": "power_out",
"description": "Internal bias supply requiring 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 that programs the soft-start period with an external capacitor between SS and SGND."
},
{
"number": "5",
"name": "COMP",
"type": "passive",
"description": "Regulation control loop compensation node; connect an R-C network from COMP to SGND."
},
{
"number": "6",
"name": "FB",
"type": "input",
"description": "Error amplifier input; an external resistive divider from the output to SGND is compared to the internal 0.8V reference to set the regulation voltage."
},
{
"number": "7",
"name": "CCM/AAM",
"type": "input",
"description": "Floating it or connecting it to VCC1 selects CCM, while an external resistor to SGND selects AAM with the AAM voltage no less than 480mV."
},
{
"number": "8",
"name": "FREQ",
"type": "passive",
"description": "Frequency set pin; connect a resistor between FREQ and SGND to set the switching frequency."
},
{
"number": "9",
"name": "PG",
"type": "output",
"description": "Power good output, open drain."
},
{
"number": "10",
"name": "ILIM",
"type": "input",
"description": "Sense voltage limit set with three fixed options (float, VCC1, SGND) that set the nominal sense voltage at maximum output current."
},
{
"number": "11",
"name": "SYNCO",
"type": "output",
"description": "Frequency synchronous output providing a 180° out-of-phase clock when the part works in CCM for dual-channel operation."
},
{
"number": "12",
"name": "SENSE-",
"type": "input",
"description": "Negative input for current sense; the inductor current limit threshold is determined by the status of ILIM."
},
{
"number": "13",
"name": "SENSE+",
"type": "input",
"description": "Positive input for current sense; the inductor current limit threshold is determined by the status of ILIM."
},
{
"number": "14",
"name": "PGND",
"type": "power_in",
"description": "High-current ground reference for the 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 connected to the gate of the synchronous N-channel MOSFET."
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{
"number": "16",
"name": "SW",
"type": "bidirectional",
"description": "Switch node that is the reference for the VBST supply and high-current return for the bootstrapped switch."
},
{
"number": "17",
"name": "TG",
"type": "output",
"description": "Top gate drive for the top N-channel MOSFET, powered from the BST capacitor and returning to SW."
},
{
"number": "18",
"name": "BST",
"type": "power_in",
"description": "Bootstrap positive supply for the floating high-side driver; connect a bypass capacitor between BST and SW, charged via a diode from VCC1."
},
{
"number": "19",
"name": "IN",
"type": "power_in",
"description": "Input supply operating over a 4V to 40V range, needing a ceramic capacitor to prevent large input voltage spikes."
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{
"number": "20",
"name": "EN/SYNC",
"type": "input",
"description": "Enable input with 1.22V threshold and 130mV hysteresis, usable for external UVLO, and an external sync clock applied here makes the internal clock follow."
},
{
"number": "21",
"name": "EP",
"type": "passive",
"description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
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"name": "VIN UVLO threshold (rising)",
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"max": 5.5,
"conditions": "VIN > 6V, load = 0 to 50mA",
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"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",
"source_page": 4,
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"name": "VCC1 regulator load regulation from VCC2",
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"typ": 1,
"max": 3,
"conditions": "Load = 0 to 50mA, VCC2 = 12V",
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"source": "datasheet"
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{
"name": "VCC2 UVLO threshold (rising)",
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"kind": "electrical",
"unit": "V",
"min": 4.3,
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"max": 4.92,
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"min": 4.05,
"typ": 4.45,
"max": 4.75,
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{
"name": "VCC2 supply current",
"symbol": "IVCC2",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 800,
"max": 1100,
"conditions": "VAAM = 5V, VFB = 0.84V, SENSE+ = SENSE- = 12V, VCC2 = 12V, no switching",
"source_page": 4,
"source": "datasheet"
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{
"name": "VCC2 supply current (AAM)",
"symbol": "IVCC2",
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"conditions": "VAAM = 0.6V, VFB = 0.84V, SENSE+ = SENSE- =12V, VCC2 = 12V, no switching",
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{
"name": "Feedback voltage",
"symbol": "VFB",
"kind": "electrical",
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"min": 0.788,
"typ": 0.8,
"max": 0.812,
"conditions": "4V ≤ VIN ≤ 40V",
"source_page": 4,
"source": "datasheet"
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{
"name": "Feedback current",
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"unit": "nA",
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"conditions": "VFB = 0.8V",
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"source": "datasheet"
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{
"name": "Enable threshold (rising)",
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"min": 1.16,
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{
"name": "Enable threshold (falling)",
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"min": 1.03,
"typ": 1.09,
"max": 1.15,
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{
"name": "Enable input current",
"symbol": "IEN",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 2,
"max": 5,
"conditions": "VEN/SYNC = 2V",
"source_page": 4,
"source": "datasheet"
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{
"name": "Enable turn-off delay",
"symbol": "tOFF",
"kind": "electrical",
"unit": "μs",
"min": 10,
"typ": 20,
"max": 40,
"conditions": "",
"source_page": 4,
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{
"name": "Operating frequency",
"symbol": "FSW",
"kind": "electrical",
"unit": "kHz",
"min": 340,
"typ": 430,
"max": 520,
"conditions": "RFREQ = 45.3kΩ",
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{
"name": "EN/SYNC frequency range",
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"min": 100,
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"name": "Current sense common mode voltage range",
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"min": 0,
"typ": null,
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{
"name": "Current limit sense voltage",
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"unit": "mV",
"min": 15,
"typ": 25,
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"conditions": "ILIM = SGND, VSENSE+ = 3.3V",
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{
"name": "Current limit sense voltage",
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"min": 40,
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"conditions": "ILIM = VCC1, VSENSE+ = 3.3V",
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{
"name": "Current limit sense voltage",
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"kind": "electrical",
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"min": 65,
"typ": 75,
"max": 85,
"conditions": "ILIM = float, VSENSE+ = 3.3V",
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"source": "datasheet"
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{
"name": "Input current of sensor",
"symbol": "ISENSE",
"kind": "electrical",
"unit": "μA",
"min": -70,
"typ": -45,
"max": -20,
"conditions": "VSENSE+/-(CM) = 0V",
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{
"name": "Input current of sensor",
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"unit": "μA",
"min": 80,
"typ": 115,
"max": 160,
"conditions": "VSENSE+/-(CM) = 3.3V",
"source_page": 5,
"source": "datasheet"
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{
"name": "Input current of sensor",
"symbol": "ISENSE",
"kind": "electrical",
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"min": 105,
"typ": 150,
"max": 205,
"conditions": "VSENSE+/-(CM) > 5V",
"source_page": 5,
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{
"name": "Soft-start source current",
"symbol": "ISS",
"kind": "electrical",
"unit": "μA",
"min": 2,
"typ": 4,
"max": 6,
"conditions": "SS = 0.5V",
"source_page": 5,
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},
{
"name": "Over-voltage threshold",
"symbol": "VOV",
"kind": "electrical",
"unit": "% VFB",
"min": 110,
"typ": 115,
"max": 120,
"conditions": "",
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},
{
"name": "BG minimum on time",
"symbol": "tON_MIN_BG",
"kind": "electrical",
"unit": "ns",
"min": null,
"typ": 175,
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{
"name": "TG maximum duty cycle",
"symbol": "Dmax",
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"unit": "%",
"min": 98,
"typ": 99.5,
"max": null,
"conditions": "VFB = 0.7V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Power good low",
"symbol": "VPG_Low",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": 0.1,
"max": 0.3,
"conditions": "Iload = 4mA",
"source_page": 6,
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{
"name": "PG rising threshold",
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"unit": "% VFB",
"min": 85,
"typ": 90,
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"conditions": "VOUT rising",
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{
"name": "PG rising threshold",
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"min": 101,
"typ": 107,
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"conditions": "VOUT falling",
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{
"name": "PG falling threshold",
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"kind": "electrical",
"unit": "% VFB",
"min": 81,
"typ": 87,
"max": 92.5,
"conditions": "VOUT falling",
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{
"name": "Power good leakage",
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{
"name": "Input supply voltage",
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"conditions": "",
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{
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