component
LT3990EMSE-3.3#PBF
Public Made by Adomby adom
Analog Devices DC-DC Converters, MSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"slug": "lt3990emse-3-3-pbf",
"version": "0.1.0",
"type": "component",
"description": "Analog Devices DC-DC Converters, MSOP-16-EP. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"power management ics",
"lt3990emse-3.3#pbf",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"lt3990emse-3-3-pbf.kicad_sym",
"lt3990emse-3-3-pbf.kicad_mod",
"lt3990emse-3-3-pbf.glb",
"lt3990emse-3-3-pbf.step",
"lt3990emse-3-3-pbf.lbr",
"docs/hero.png",
"docs/lt3990emse-3-3-pbf-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"lt3990emse-3-3-pbf-hero.glb",
"lt3990emse-3-3-pbf-hero.overlay.json",
"lt3990emse-3-3-pbf-etched.glb"
],
"component": {
"mpn": "LT3990EMSE-3.3#PBF",
"manufacturer": "Analog Devices",
"package": "MSOP-16-EP",
"pin_count": 17,
"category": "Power Management ICs",
"subcategory": "DC-DC Converters",
"datasheet": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt3990.pdf",
"parts": {
"symbol": "lt3990emse-3-3-pbf.kicad_sym",
"footprint": "lt3990emse-3-3-pbf.kicad_mod",
"model_3d": "lt3990emse-3-3-pbf-hero.glb",
"model_3d_plain": "lt3990emse-3-3-pbf-etched.glb",
"model_3d_step": "lt3990emse-3-3-pbf-etched.step",
"model_3d_step_plain": "lt3990emse-3-3-pbf.step",
"lbr": "lt3990emse-3-3-pbf.lbr"
},
"distributor_links": {
"lcsc": "C671861",
"digikey": "LT3990EMSE-3.3#PBF-ND",
"mouser": "584-3990EMSE-3.3PBF"
},
"distributor_check": {
"checked_at": "2026-10-30T12:00:20Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "LT3990EMSE-3.3#PBF-ND",
"status": "found"
},
"mouser": {
"pn": "584-3990EMSE-3.3PBF",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VOUT",
"type": "input",
"description": "Regulated to 3.3V for the LT3990-3.3, connects to the internal feedback divider, and is tied internally to pin 2 for a redundant output path, so tie the output to both pins."
},
{
"number": "2",
"name": "VOUT",
"type": "input",
"description": "Second VOUT pin, connected internally to pin 1 to give a redundant path to the output; tie the output to both pins."
},
{
"number": "3",
"name": "NC",
"type": "unconnected",
"description": "No connect, not connected to internal circuitry and must be left floating to ensure fault tolerance."
},
{
"number": "4",
"name": "EN/UVLO",
"type": "input",
"description": "Part is in shutdown when low and active when high, with a 1.19V rising threshold and 35mV hysteresis; tie to VIN if unused, and ground it if VIN is below 4.2V."
},
{
"number": "5",
"name": "NC",
"type": "unconnected",
"description": "No connect, not connected to internal circuitry and must be left floating to ensure fault tolerance."
},
{
"number": "6",
"name": "VIN",
"type": "power_in",
"description": "Supplies current to the internal circuitry and the internal power switch (4.2V to 62V operating) and must be locally bypassed."
},
{
"number": "7",
"name": "NC",
"type": "unconnected",
"description": "No connect, not connected to internal circuitry and must be left floating to ensure fault tolerance."
},
{
"number": "8",
"name": "GND",
"type": "power_in",
"description": "Ground pin."
},
{
"number": "9",
"name": "SW",
"type": "output",
"description": "Output of the internal power switch; connect this pin to the inductor."
},
{
"number": "10",
"name": "NC",
"type": "unconnected",
"description": "No connect, not connected to internal circuitry and must be left floating to ensure fault tolerance."
},
{
"number": "11",
"name": "BOOST",
"type": "passive",
"description": "Provides a drive voltage higher than the input voltage to the internal bipolar NPN power switch (boost capacitor connects to SW)."
},
{
"number": "12",
"name": "NC",
"type": "unconnected",
"description": "No connect, not connected to internal circuitry and must be left floating to ensure fault tolerance."
},
{
"number": "13",
"name": "BD",
"type": "input",
"description": "Anode of the boost diode, which also supplies current to the internal regulator when BD is above 3.2V."
},
{
"number": "14",
"name": "PG",
"type": "output",
"description": "Open-drain output of an internal comparator that stays low until the output is within 10% of final regulation; valid when VIN is above 4.2V and EN/UVLO is high."
},
{
"number": "15",
"name": "NC",
"type": "unconnected",
"description": "No connect, not connected to internal circuitry and must be left floating to ensure fault tolerance."
},
{
"number": "16",
"name": "RT",
"type": "passive",
"description": "A resistor from RT to ground sets the switching frequency (200kHz to 2.2MHz)."
},
{
"number": "17",
"name": "GND",
"type": "power_in",
"description": "Exposed pad is ground and must be soldered to the PCB."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"primary_model": "claude-sonnet-5-5",
"primary_mode": "text",
"consensus_model": "claude-sonnet-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: Pin types for BOOST, BD and RT are my own classification, since the datasheet does not give ERC type"
],
"pages_sent": 9,
"cost_usd": 0.1107,
"at": "2026-10-30T12:00:02"
},
"datasheet": {
"url": "https://www.analog.com/media/en/technical-documentation/data-sheets/lt3990.pdf",
"pages": 22,
"sha256": "9b5280ede098d3fb",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 17,
"described": 17,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "lt3990emse-3-3-pbf.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.9,
4.039,
0.95
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "e807f0e0e2c0c408c18dc198f4fc826ff019157c0529c7e78e68c1aab270d826",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "lt3990emse-3-3-pbf-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.9,
4.039,
0.95
],
"zmin_mm": -0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "ab6602d4fcb6908aabd3e2d6f209a90d5f4a98621a60a7d2060998c346a59d53",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
],
"package_dims": {
"package_code": "MSE16",
"source_page": 20,
"D": {
"nom_mm": 4.9,
"range_mm": [
null,
null
]
},
"E1": {
"nom_mm": 3.0,
"range_mm": [
null,
null
]
},
"e": {
"nom_mm": 0.5,
"range_mm": [
null,
null
]
},
"A": {
"nom_mm": 1.1,
"range_mm": [
null,
1.1
]
},
"source": "datasheet package drawing, every number found on its page (extract_pins --task dims)",
"model_check": {
"file": "lt3990emse-3-3-pbf.step",
"verdict": "PASS",
"reasons": [
"height within the datasheet's package drawing"
],
"by": "factory/package_fit.py"
}
}
}
}