component
ATL431LIBQDBZRQ1
Public Made by Adomby adom
Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190191192193194195196197198199200201202203204205206207208209210211212213214215216217218219220221222223224225226227228229230231232233234235236237238239240241242243244245246247248249250251252253254255256257258259260261262263264265266267268269270271272273274275276277278279280281282283284285286287288289290291292293294295296297298299300301302303304305306307308309310311312313314315316317318319320321322323324325326327328329330331332333334335336337338339340341342343344345346347348349350351352353354355356357358359360361362363364365366367368369370371372373374375376377378379380381382383384385386387388389390391392393394395396397398399400401402403404405406407408409410411412413414415416417418419420421422423424425426427428429430431432433434435436437438439440441442443444445446447448449450451452453454455456457458459460461462463464465
{
"schema_version": 1,
"type": "component",
"slug": "atl431libqdbzrq1",
"title": "ATL431LIBQDBZRQ1",
"brief": "Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"power management (pmic)",
"atl431libqdbzrq1",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "ATL431LIBQDBZRQ1",
"manufacturer": "Texas Instruments",
"package": "SOT-23-3",
"pin_count": 3,
"category": "Power Management (PMIC)",
"subcategory": "Voltage Reference",
"datasheet": "https://www.ti.com/lit/ds/symlink/atl431li-q1.pdf",
"parts": {
"symbol": "atl431libqdbzrq1.kicad_sym",
"footprint": "atl431libqdbzrq1.kicad_mod",
"model_3d": "atl431libqdbzrq1-hero.glb",
"model_3d_plain": "atl431libqdbzrq1-etched.glb",
"model_3d_step": "atl431libqdbzrq1-etched.step",
"model_3d_step_plain": "atl431libqdbzrq1.step",
"lbr": "atl431libqdbzrq1.lbr"
},
"distributor_links": {
"lcsc": "C2867954",
"digikey": "296-ATL431LIBQDBZRQ1TR-ND",
"mouser": "595-ATL431LIBQDBZRQ1"
},
"distributor_check": {
"checked_at": "2026-11-05T21:27:12Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-ATL431LIBQDBZRQ1TR-ND",
"status": "found"
},
"mouser": {
"pn": "595-ATL431LIBQDBZRQ1",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "CATHODE",
"type": "bidirectional",
"description": "Shunt current/voltage input; the datasheet specifies IKA from 0.08 mA (min) to 15 mA (max) and VKA up to 36 V."
},
{
"number": "2",
"name": "REF",
"type": "input",
"description": "Threshold reference input relative to the common anode, with reference input current IREF limited to 0.4 μA (max)."
},
{
"number": "3",
"name": "ANODE",
"type": "power_in",
"description": "Common pin, normally connected to ground, and the reference for all voltages on the device."
}
],
"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: MPN ATL431LIBQDBZRQ1 is the ATL431LI variant, so the pinout is taken from the ATL431LI-Q1 DBZ column; The datasheet table lists ANODE as type O, but it is the common ground-reference pin ('normally conn"
],
"pages_sent": 13,
"cost_usd": 0.0114,
"at": "2026-11-05T21:27:04"
},
"datasheet": {
"url": "https://www.ti.com/lit/ds/symlink/atl431li-q1.pdf",
"pages": 37,
"sha256": "babda1ee47f24dd9",
"source_tier": "mfr"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 3,
"described": 3,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "atl431libqdbzrq1.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.5,
3,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "atl431libqdbzrq1-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
2.5,
3,
1.2
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "df00cf0ccd34663ffd41ee7160ad73849377b9ae20e6f28ca4f8b6a9cbf07e86",
"checked": "2026-11-05",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOT-23-3",
"Category": "Power Management (PMIC)",
"Pins": "3"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "babda1ee47f24dd9ad2b300df2efb790fbe6fd91551a200060290a83741891fc",
"rows": [
{
"name": "Reference voltage (B grade)",
"symbol": "VREF",
"kind": "tolerance",
"unit": "mV",
"min": 2487,
"typ": 2500,
"max": 2512,
"conditions": "VKA = Vref, IKA = 1 mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Deviation of reference input voltage over full temperature range (Q devices)",
"symbol": "VI(dev)",
"kind": "electrical",
"unit": "mV",
"min": null,
"typ": 10,
"max": 27,
"conditions": "VKA = Vref, IKA = 1 mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Ratio of change in reference voltage to change in cathode voltage, dVKA = 10 V - Vref",
"symbol": "ΔVref/ΔVKA",
"kind": "electrical",
"unit": "mV/V",
"min": null,
"typ": -1.4,
"max": -2.7,
"conditions": "IKA = 1 mA, ΔVKA = 10 V - Vref",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Ratio of change in reference voltage to change in cathode voltage, dVKA = 36 V - 10 V",
"symbol": "ΔVref/ΔVKA",
"kind": "electrical",
"unit": "mV/V",
"min": null,
"typ": -1,
"max": -2,
"conditions": "IKA = 1 mA, ΔVKA = 36 V - 10 V",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Reference input current",
"symbol": "Iref",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.2,
"max": 0.4,
"conditions": "IKA = 1 mA, R1 = 10kΩ, R2 = ∞",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Deviation of reference input current over full temperature range",
"symbol": "II(dev)",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.1,
"max": 0.3,
"conditions": "IKA = 1 mA, R1 = 10kΩ, R2 = ∞",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Minimum cathode current for regulation",
"symbol": "Imin",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 65,
"max": 80,
"conditions": "VKA = Vref",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Off-state cathode current",
"symbol": "Ioff",
"kind": "electrical",
"unit": "µA",
"min": null,
"typ": 0.1,
"max": 1,
"conditions": "VKA = 36 V, Vref = 0",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Dynamic impedance",
"symbol": "|ZKA|",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": 0.65,
"max": 0.75,
"conditions": "VKA = Vref, IKA = 1 mA to 15 mA",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Cathode voltage (absolute maximum)",
"symbol": "VKA",
"kind": "absolute_maximum",
"unit": "V",
"min": null,
"typ": null,
"max": 37,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Continuous cathode current range (absolute maximum)",
"symbol": "IKA",
"kind": "absolute_maximum",
"unit": "mA",
"min": -10,
"typ": null,
"max": 18,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Reference input current (absolute maximum)",
"symbol": "II(ref)",
"kind": "absolute_maximum",
"unit": "mA",
"min": -5,
"typ": null,
"max": 10,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating junction temperature range",
"symbol": "TJ",
"kind": "absolute_maximum",
"unit": "C",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Storage temperature range",
"symbol": "Tstg",
"kind": "absolute_maximum",
"unit": "C",
"min": -65,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Cathode voltage (recommended operating)",
"symbol": "VKA",
"kind": "recommended_operating",
"unit": "V",
"min": null,
"typ": null,
"max": 36,
"conditions": "Minimum given as VREF",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Continuous cathode current range (recommended operating)",
"symbol": "IKA",
"kind": "recommended_operating",
"unit": "mA",
"min": 0.08,
"typ": null,
"max": 15,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Operating free-air temperature (ATL43xLIxQ)",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-ambient thermal resistance",
"symbol": "RθJA",
"kind": "thermal",
"unit": "C/W",
"min": null,
"typ": 371.7,
"max": null,
"conditions": "DBZ, 3 pins",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-case (top) thermal resistance",
"symbol": "RθJC(top)",
"kind": "thermal",
"unit": "C/W",
"min": null,
"typ": 145.9,
"max": null,
"conditions": "DBZ, 3 pins",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-board thermal resistance",
"symbol": "RθJB",
"kind": "thermal",
"unit": "C/W",
"min": null,
"typ": 104.7,
"max": null,
"conditions": "DBZ, 3 pins",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-top characterization parameter",
"symbol": "ψJT",
"kind": "thermal",
"unit": "C/W",
"min": null,
"typ": 23.9,
"max": null,
"conditions": "DBZ, 3 pins",
"source_page": 4,
"source": "datasheet"
},
{
"name": "Junction-to-board characterization parameter",
"symbol": "ψJB",
"kind": "thermal",
"unit": "C/W",
"min": null,
"typ": 102.9,
"max": null,
"conditions": "DBZ, 3 pins",
"source_page": 4,
"source": "datasheet"
}
]
}
},
"variants": [],
"sections": [
"hero",
"viewers",
"readme",
"breadcrumbs",
"info"
],
"discovery_triggers": [
"atl431libqdbzrq1"
],
"discovery_pitch": "ATL431LIBQDBZRQ1 (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
"dependencies": {},
"hero": {
"type": "image",
"path": "docs/hero.png"
},
"files": [
"page.json",
"README.md",
"atl431libqdbzrq1.kicad_sym",
"atl431libqdbzrq1.kicad_mod",
"atl431libqdbzrq1.glb",
"atl431libqdbzrq1.step",
"atl431libqdbzrq1.lbr",
"docs/hero.png",
"docs/atl431libqdbzrq1-datasheet.pdf",
"viewers/symbol.html",
"viewers/footprint.html",
"atl431libqdbzrq1-hero.glb",
"atl431libqdbzrq1-hero.overlay.json",
"atl431libqdbzrq1-etched.glb"
],
"visibility": {
"public": true
}
}