component
MP1531DM-LF-Z
Public Made by Adomby adom
Monolithic Power Systems DC-DC Converters, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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"slug": "mp1531dm-lf-z",
"title": "MP1531DM-LF-Z",
"brief": "Monolithic Power Systems DC-DC Converters, TSSOP-16. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
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"component": {
"mpn": "MP1531DM-LF-Z",
"manufacturer": "Monolithic Power Systems",
"package": "TSSOP-16",
"pin_count": 16,
"category": "Power Management (PMIC)",
"subcategory": "DC-DC Converters",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/1ae62ddf587585665e39f0e63ab14155.pdf",
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"lbr": "mp1531dm-lf-z.lbr"
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"distributor_links": {
"lcsc": "C17250296",
"digikey": "MP1531DM-LF-Z-ND",
"mouser": "946-MP1531DMLFZ"
},
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"checked_at": "2026-10-31T02:09:22Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "MP1531DM-LF-Z-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "946-MP1531DMLFZ",
"status": "found"
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},
"pins": [
{
"number": "1",
"name": "RDY",
"type": "output",
"description": "Open-drain active-low Regulators Not Ready output requiring an external 100kΩ pull-up; pulled low once startup completes and all FB voltages exceed 80% of threshold, goes high ~15µs after a fault, and the chip shuts down if the fault persists beyond ~6ms (C4 = 10nF)."
},
{
"number": "2",
"name": "FB1",
"type": "input",
"description": "Step-up converter feedback input (inverting input of the error amplifier); connect a resistive divider from the step-up output to set its voltage, regulating at 1.22V to 1.28V (1.25V typ)."
},
{
"number": "3",
"name": "COMP",
"type": "passive",
"description": "Step-up converter compensation node, the error amplifier output; connect a series RC network to compensate the control loop."
},
{
"number": "4",
"name": "IN",
"type": "power_in",
"description": "Internal power input supplying the MP1531 from 2.7V to 5.5V; bypass IN to PGND with a 10µF or greater capacitor."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Signal ground."
},
{
"number": "6",
"name": "REF",
"type": "power_out",
"description": "1.25V reference voltage output; bypass to GND with 0.1µF or greater and connect to the low-side resistor of the negative linear regulator feedback string."
},
{
"number": "7",
"name": "FB2",
"type": "input",
"description": "Negative linear regulator feedback input; connect the resistor string between GL and REF, with a regulation threshold of GND (0V ±25mV)."
},
{
"number": "8",
"name": "FB3",
"type": "input",
"description": "Positive linear regulator feedback input; connect the resistor string between GH and GND, with a regulation threshold of 1.25V."
},
{
"number": "9",
"name": "EN",
"type": "input",
"description": "On/off control input: drive high to turn on, low to turn off (all outputs immediately disabled); connect to IN for automatic startup; rising threshold 1.6V, low level 0.3V."
},
{
"number": "10",
"name": "GL",
"type": "power_out",
"description": "Negative linear regulator output supplying up to 10mA; bypass to GND with a 1µF or greater low-ESR ceramic capacitor."
},
{
"number": "11",
"name": "IN2",
"type": "power_in",
"description": "Negative linear regulator input, driven by an inverting charge pump powered from SW; can go as low as -20V."
},
{
"number": "12",
"name": "GH",
"type": "power_out",
"description": "Positive linear regulator output supplying up to 10mA; bypass to GND with a 1µF or greater low-ESR ceramic capacitor."
},
{
"number": "13",
"name": "IN3",
"type": "power_in",
"description": "Positive linear regulator input, driven by a doubling, tripling or quadrupling charge pump from SW; can go as high as 38V."
},
{
"number": "14",
"name": "PGND",
"type": "power_in",
"description": "Power ground, the source of the internal 250mΩ N-channel MOSFET switch; connect to GND as close to the MP1531 as possible."
},
{
"number": "15",
"name": "SW",
"type": "passive",
"description": "Step-up converter power switch node, the drain of the internal 250mΩ N-channel MOSFET; connect the inductor from the input source to SW and a rectifier from SW to the main output (-0.3V to +25V)."
},
{
"number": "16",
"name": "CT",
"type": "passive",
"description": "Timing capacitor pin for soft-start, power-on sequencing and fault timer; a capacitor from CT to GND sets the delay periods (10nF gives 6ms)."
}
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"cost_usd": 0.1384,
"at": "2026-10-31T02:09:13"
},
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"described": 16,
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"kind": "electrical",
"unit": "V",
"min": 1.6,
"typ": null,
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"min": null,
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"min": 200,
"typ": 250,
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"conditions": "",
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{
"name": "Maximum Duty Cycle",
"symbol": "DM",
"kind": "electrical",
"unit": "%",
"min": 85,
"typ": 90,
"max": null,
"conditions": "",
"source_page": 3,
"source": "datasheet"
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{
"name": "FB1, FB3 Regulation Voltage",
"symbol": "",
"kind": "electrical",
"unit": "V",
"min": 1.22,
"typ": 1.25,
"max": 1.28,
"conditions": "",
"source_page": 3,
"source": "datasheet"
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{
"name": "FB2 Regulation Voltage",
"symbol": "",
"kind": "electrical",
"unit": "mV",
"min": -25,
"typ": 0,
"max": 25,
"conditions": "",
"source_page": 3,
"source": "datasheet"
},
{
"name": "FB1, FB3 Input Bias Current",
"symbol": "",
"kind": "electrical",
"unit": "nA",
"min": -100,
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{
"name": "REF Regulation Voltage",
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"min": 1.22,
"typ": 1.25,
"max": 1.28,
"conditions": "IREF = 50μA",
"source_page": 3,
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{
"name": "REF Load Regulation",
"symbol": "",
"kind": "electrical",
"unit": "%",
"min": null,
"typ": 1,
"max": 1.2,
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"source_page": 3,
"source": "datasheet"
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{
"name": "SW On Resistance",
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"source_page": 3,
"source": "datasheet"
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{
"name": "SW On Resistance",
"symbol": "",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 400,
"max": null,
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{
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"min": null,
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"conditions": "VSW = 22V",
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{
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{
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{
"name": "Continuous Power Dissipation TSSOP16",
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"max": 1.4,
"conditions": "TA = +25°C",
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{
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"symbol": "",
"kind": "absolute_maximum",
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"name": "Storage Temperature",
"symbol": "",
"kind": "absolute_maximum",
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"min": -65,
"typ": null,
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"conditions": "",
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{
"name": "Input Voltage",
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"min": 2.7,
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{
"name": "Main Output Voltage",
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{
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"min": -20,
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{
"name": "IN3, GH Voltage",
"symbol": "",
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"min": 0,
"typ": null,
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"conditions": "",
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{
"name": "Maximum Junction Temp.",
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"unit": "°C",
"min": null,
"typ": null,
"max": 125,
"conditions": "",
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{
"name": "Thermal Resistance TSSOP16 junction-to-ambient",
"symbol": "θJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 90,
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"min": null,
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"min": null,
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"min": null,
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"source_page": 3,
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"name": "GH Dropout Voltage",
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