component
XR77103ELBTR
Public Made by Adomby adom
MaxLinear DC-DC Converters, QFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346
{
"slug": "xr77103elbtr",
"version": "0.1.0",
"type": "component",
"description": "MaxLinear DC-DC Converters, QFN-32-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"tags": [
"component",
"power management ics",
"xr77103elbtr",
"factory-2.0.0",
"extractor-text"
],
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"xr77103elbtr.kicad_sym",
"xr77103elbtr.kicad_mod",
"xr77103elbtr.glb",
"xr77103elbtr.step",
"xr77103elbtr.lbr",
"docs/hero.png",
"docs/xr77103elbtr-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"xr77103elbtr-hero.glb",
"xr77103elbtr-hero.overlay.json",
"xr77103elbtr-etched.glb"
],
"component": {
"mpn": "XR77103ELBTR",
"manufacturer": "MaxLinear",
"package": "QFN-32-EP(4x4)",
"pin_count": 33,
"category": "Power Management ICs",
"subcategory": "DC-DC Converters",
"datasheet": "https://datasheet.lcsc.com/datasheet/pdf/61109c682334cc95b36418522e22c6ff.pdf",
"parts": {
"symbol": "xr77103elbtr.kicad_sym",
"footprint": "xr77103elbtr.kicad_mod",
"model_3d": "xr77103elbtr-hero.glb",
"model_3d_plain": "xr77103elbtr-etched.glb",
"model_3d_step": "xr77103elbtr-etched.step",
"model_3d_step_plain": "xr77103elbtr.step",
"lbr": "xr77103elbtr.lbr"
},
"distributor_links": {
"lcsc": "C2070915",
"digikey": "1016-2217-2-ND",
"mouser": "701-XR77103ELBTR"
},
"distributor_check": {
"checked_at": "2026-10-30T23:54:53Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "1016-2217-2-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "701-XR77103ELBTR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VOUT3",
"type": "input",
"description": "Buck 3 output sense pin."
},
{
"number": "2",
"name": "COMP3",
"type": "passive",
"description": "Compensation pin for Buck 3; connect a series RC circuit to this pin for compensation."
},
{
"number": "3",
"name": "A0",
"type": "input",
"description": "I2C address select pin; A0 is internally pulled high through a 100kΩ pull-up resistor."
},
{
"number": "4",
"name": "VIN",
"type": "power_in",
"description": "IC supply pin; connect a capacitor as close as possible to this pin and AGND. VIN, VIN1, VIN2 and VIN3 must be tied together."
},
{
"number": "5",
"name": "GND",
"type": "power_in",
"description": "Ground."
},
{
"number": "6",
"name": "VCC",
"type": "power_out",
"description": "Internal supply; connect a ceramic capacitor from this pin to AGND, and tie VCC to VIN for VIN = 5V."
},
{
"number": "7",
"name": "COMP1",
"type": "passive",
"description": "Compensation pin for Buck 1; connect a series RC circuit to this pin for compensation."
},
{
"number": "8",
"name": "VOUT1",
"type": "input",
"description": "Buck 1 output sense pin."
},
{
"number": "9",
"name": "BST1",
"type": "passive",
"description": "Bootstrap capacitor for Buck 1; connect a bootstrap capacitor from this pin to LX1."
},
{
"number": "10",
"name": "VIN1",
"type": "power_in",
"description": "Input supply for Buck 1; connect a capacitor as close as possible to this pin and PGND. VIN1 must be tied to VIN."
},
{
"number": "11",
"name": "LX1",
"type": "output",
"description": "Switching node for Buck 1."
},
{
"number": "12",
"name": "LX1",
"type": "output",
"description": "Switching node for Buck 1."
},
{
"number": "13",
"name": "LX2",
"type": "output",
"description": "Switching node for Buck 2."
},
{
"number": "14",
"name": "LX2",
"type": "output",
"description": "Switching node for Buck 2."
},
{
"number": "15",
"name": "VIN2",
"type": "power_in",
"description": "Input supply for Buck 2; connect a capacitor as close as possible to this pin and PGND. VIN2 must be tied to VIN."
},
{
"number": "16",
"name": "BST2",
"type": "passive",
"description": "Bootstrap capacitor for Buck 2; connect a bootstrap capacitor from this pin to LX2."
},
{
"number": "17",
"name": "VOUT2",
"type": "input",
"description": "Buck 2 output sense pin."
},
{
"number": "18",
"name": "COMP2",
"type": "passive",
"description": "Compensation pin for Buck 2; connect a series RC circuit to this pin for compensation."
},
{
"number": "19",
"name": "DGND",
"type": "power_in",
"description": "Digital ground."
},
{
"number": "20",
"name": "nWR",
"type": "input",
"description": "Write protection input for NVM; data can be written to NVM when this pin is low, and it is internally pulled high through a 100kΩ pull-up resistance."
},
{
"number": "21",
"name": "SDA",
"type": "bidirectional",
"description": "Data I/O pin for the I2C serial interface."
},
{
"number": "22",
"name": "SCL",
"type": "input",
"description": "Clock input pin for the I2C serial interface."
},
{
"number": "23",
"name": "VL",
"type": "power_in",
"description": "Supply pin for the I2C interface; supply 3.3V typically, and it can be left floating if the I2C interface is not used."
},
{
"number": "24",
"name": "PGOOD",
"type": "output",
"description": "Power good output; open-drain output asserted after all converters are sequenced and within regulation."
},
{
"number": "25",
"name": "SYNC",
"type": "input",
"description": "External clock input pin; connect to AGND when unused."
},
{
"number": "26",
"name": "EN",
"type": "input",
"description": "Enable control input; set EN high to enable converters."
},
{
"number": "27",
"name": "AGND",
"type": "power_in",
"description": "Analog ground."
},
{
"number": "28",
"name": "VIN",
"type": "power_in",
"description": "IC supply pin; connect a capacitor as close as possible to this pin and AGND. VIN, VIN1, VIN2 and VIN3 must be tied together."
},
{
"number": "29",
"name": "LX3",
"type": "output",
"description": "Switching node for Buck 3."
},
{
"number": "30",
"name": "LX3",
"type": "output",
"description": "Switching node for Buck 3."
},
{
"number": "31",
"name": "VIN3",
"type": "power_in",
"description": "Input supply for Buck 3; connect a capacitor as close as possible to this pin and PGND. VIN3 must be tied to VIN."
},
{
"number": "32",
"name": "BST3",
"type": "passive",
"description": "Bootstrap capacitor for Buck 3; connect a bootstrap capacitor from this pin to LX3."
},
{
"number": "33",
"name": "PGND",
"type": "power_in",
"description": "Exposed pad is power ground (PGND); the pad number is shown as 33 in the typical application schematic."
}
],
"provenance": {
"extractor": "extract_pins 0.3",
"factory_chain": {
"factory": "2.0.0",
"extractor": "extract_pins 0.3",
"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 Pin Functions table prints the e-PAD number as '-'. The number '33' is taken from the e-PAD labe; VCC is described only as an 'Internal supply' with a bypass capacitor to AGND, and it can be tied to; The page 7 pin diagram text is scrambled. Pin numbers and names were taken from the Pin Functions ta",
"1/33 pins cited to the wrong page (name found elsewhere): ['33:PGND (e-PAD)@p8']"
],
"pages_sent": 9,
"cost_usd": 0.0526,
"at": "2026-10-30T23:54:36"
},
"datasheet": {
"url": "https://datasheet.lcsc.com/datasheet/pdf/61109c682334cc95b36418522e22c6ff.pdf",
"pages": 28,
"sha256": "c4640b96d4dc8c55",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 33,
"described": 33,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "xr77103elbtr.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.0,
4.0,
0.6
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "7b482a511cdf2cf875c31931f9fea7f745b8dac2ea6203531cd6604f40a290cb",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "xr77103elbtr-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4.0,
4.0,
0.6
],
"zmin_mm": 0.0,
"centre_offset_mm": 0.0,
"footprint_binding": "identity",
"sha256": "29643b9b74d9f24812e14f5f37f2f893ca37ab0bda2aa1cc8a5b639158bcf675",
"checked": "2026-10-30",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
}
}