component
XL1509-3.3
Public Made by Adomby adom
UMW DC-DC Converters, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.
main
Ray
xl1509-3-3: specified limits as data (metadata.characteristics, 15 rows from the datasheet)
86cb133
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{
"schema_version": 1,
"type": "component",
"slug": "xl1509-3-3",
"title": "XL1509-3.3",
"brief": "UMW DC-DC Converters, SOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
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"component": {
"mpn": "XL1509-3.3",
"manufacturer": "UMW",
"package": "SOP-8",
"pin_count": 8,
"category": "PMIC",
"subcategory": "DC-DC Converters",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/8fc40f471ce8861475100e80d7a27e4e.pdf",
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"lbr": "xl1509-3-3.lbr"
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"distributor_links": {
"lcsc": "C2681226"
},
"pins": [
{
"number": "1",
"name": "VIN",
"type": "power_in",
"description": "Supply Voltage Input Pin. Operates from 4.5V to 40V DC (absolute max 45V). Bypass VIN to GND with a suitably large capacitor to eliminate input-line noise."
},
{
"number": "2",
"name": "OUTPUT",
"type": "output",
"description": "Power Switch Output Pin (SW). Switch node connecting the internal power transistor's emitter to the external inductor and Schottky catch diode; delivers up to 2A of switched current at 150 kHz."
},
{
"number": "3",
"name": "FEEDBACK",
"type": "input",
"description": "Feedback Pin (FB). For fixed-output versions (3.3V here), tie directly to the regulated output; internal divider senses against the 1.23V reference. Absolute max: -0.3 to VIN."
},
{
"number": "4",
"name": "ON/OFF",
"type": "input",
"description": "Enable Pin. Drive low (<0.8V) to turn the regulator ON, drive high (>1.4V) to turn it OFF. Floating defaults low (ON). Shutdown supply current typ. 80 µA."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground pin. Should be placed outside the Schottky diode to output capacitor ground path to prevent switching-current spikes from inducing voltage noise into the IC. Pins 5, 6, 7, 8 are all GND and should be tied together."
},
{
"number": "6",
"name": "GND",
"type": "power_in",
"description": "Ground pin (see pin 5). Tie all four GND pins to a solid ground plane for current return and thermal dissipation."
},
{
"number": "7",
"name": "GND",
"type": "power_in",
"description": "Ground pin (see pin 5). Tie all four GND pins to a solid ground plane for current return and thermal dissipation."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground pin (see pin 5). Tie all four GND pins to a solid ground plane for current return and thermal dissipation."
}
],
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"sha256": "bd5713838034a224",
"source_tier": "lcsc"
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"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 8,
"described": 8,
"cites_pages": true,
"refuses_to_fabricate": true
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"pin1": {
"pad": "1",
"at": [
-2.475,
-1.905
],
"corner": "top-left",
"source": "silk-marker",
"derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
"mark": "drawn"
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"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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1.75
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"zmin_mm": 0,
"centre_offset_mm": 0,
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},
"metadata": {
"specs": {
"Manufacturer": "UMW",
"Package": "SOP-8",
"Category": "PMIC",
"Pins": "8"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "bd5713838034a224",
"rows": [
{
"name": "Output voltage (3.3V fixed version)",
"symbol": "VOUT",
"kind": "electrical",
"unit": "V",
"min": 3.168,
"typ": 3.3,
"max": 3.432,
"conditions": "XL1509-3.3 system test circuit Figure 5; VIN=4.75V to 40V; ILOAD=0.2A to 2A; TA=25°C unless otherwise specified",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Input operation voltage",
"symbol": "VIN",
"kind": "electrical",
"unit": "V",
"min": 4.5,
"typ": null,
"max": null,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Oscillator frequency",
"symbol": "FOSC",
"kind": "electrical",
"unit": "Khz",
"min": 117,
"typ": 150,
"max": 183,
"conditions": "VFB=0",
"source_page": 6,
"source": "datasheet"
},
{
"name": "ON/OFF pin threshold, High (Regulator OFF)",
"symbol": "VON/OFF",
"kind": "electrical",
"unit": "V",
"min": 1.4,
"typ": null,
"max": null,
"conditions": "High (Regulator OFF)",
"source_page": 6,
"source": "datasheet"
},
{
"name": "ON/OFF pin threshold, Low (Regulator ON)",
"symbol": "VON/OFF",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.8,
"conditions": "Low (Regulator ON)",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input voltage (absolute maximum)",
"symbol": "VIN",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": 45,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Feedback pin voltage (absolute maximum)",
"symbol": "VFB",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "upper limit printed as VIN",
"source_page": 4,
"source": "datasheet"
},
{
"name": "ON/OFF pin voltage (absolute maximum)",
"symbol": "VON/OFF",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "upper limit printed as VIN",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Output switch pin voltage (absolute maximum)",
"symbol": "VOutput",
"kind": "absolute_maximum",
"unit": "V",
"min": -0.3,
"typ": null,
"max": null,
"conditions": "upper limit printed as VIN",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating junction temperature",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Storage temperature",
"symbol": "TSTG",
"kind": "absolute_maximum",
"unit": "°C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Lead temperature (soldering)",
"symbol": "TLEAD",
"kind": "absolute_maximum",
"unit": "°C",
"min": null,
"typ": null,
"max": 260,
"conditions": "Soldering, 10 sec",
"source_page": 4,
"source": "datasheet"
},
{
"name": "ESD (HBM)",
"symbol": "ESD",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 2000,
"conditions": "HBM",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Thermal resistance, junction to ambient (SOIC8)",
"symbol": "RJA",
"kind": "thermal",
"unit": "°C/W",
"min": null,
"typ": 100,
"max": null,
"conditions": "Junction to ambient, no heatsink, free air",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Input supply voltage range (recommended operating)",
"symbol": "VIN",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 40,
"conditions": "",
"source_page": 2,
"source": "datasheet"
}
]
}
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"updated_at": "2026-09-25T14:28:01.823Z"
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