ATL431LIBQDBZR

{
  "slug": "atl431libqdbzr",
  "version": "0.1.1",
  "type": "component",
  "description": "Texas Instruments Voltage Reference, SOT-23-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "atl431libqdbzr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "atl431libqdbzr.kicad_sym",
    "atl431libqdbzr.kicad_mod",
    "atl431libqdbzr.glb",
    "atl431libqdbzr.step",
    "atl431libqdbzr.lbr",
    "docs/hero.png",
    "docs/atl431libqdbzr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "atl431libqdbzr-etched.step",
    "atl431libqdbzr-hero.glb",
    "atl431libqdbzr-hero.overlay.json"
  ],
  "component": {
    "mpn": "ATL431LIBQDBZR",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-3",
    "pin_count": 3,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Reference",
    "datasheet": "https://www.ti.com/cn/lit/gpn/atl431li",
    "parts": {
      "symbol": "atl431libqdbzr.kicad_sym",
      "footprint": "atl431libqdbzr.kicad_mod",
      "model_3d": "atl431libqdbzr-hero.glb",
      "model_3d_plain": "atl431libqdbzr.glb",
      "model_3d_step": "atl431libqdbzr-etched.step",
      "model_3d_step_plain": "atl431libqdbzr.step",
      "lbr": "atl431libqdbzr.lbr"
    },
    "distributor_links": {
      "lcsc": "C701720"
    },
    "pins": [
      {
        "number": "1",
        "name": "CATHODE",
        "type": "output",
        "description": "Regulated output cathode node; provides adjustable voltage output from VREF (2.5V) to 36V; sinks programmable load current from 0.1mA to 15mA maximum."
      },
      {
        "number": "2",
        "name": "REF",
        "type": "input",
        "description": "Reference feedback input; receives feedback voltage for closed-loop output voltage regulation; requires input current of 0.2µA to 0.4µA maximum."
      },
      {
        "number": "3",
        "name": "ANODE",
        "type": "power_in",
        "description": "Anode ground reference node; typically connected to system ground; provides the voltage reference for the shunt regulator operation."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [],
        "pages_sent": 40,
        "cost_usd": 0.3265,
        "at": "2026-09-23T03:24:09"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/atl431li",
        "pages": 40,
        "sha256": "68e0ac1b6eb6b764",
        "source_tier": "lcsc"
      },
      "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": "atl431libqdbzr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "16964b14f93e6c778288a0c110b35f670fab733109c26f0da7dfc07cc3350040",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "atl431libqdbzr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.5,
          3.0,
          1.2
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "209400ce0d5bab6fc049752c02ce9b7c96204470ac5c62ab44883d9d064f7386",
        "checked": "2026-11-13",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "title": "ATL431LIBQDBZR",
  "brief": "Texas Instruments Voltage Reference, SOT-23-3. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-23-3",
      "Category": "Power Management (PMIC)",
      "Pins": "3"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "68e0ac1b6eb6b764",
      "rows": [
        {
          "name": "Reference voltage (ATL431LIBx, 25°C)",
          "symbol": "VREF",
          "kind": "electrical",
          "unit": "mV",
          "min": 2487,
          "typ": 2500,
          "max": 2512,
          "conditions": "VKA = Vref, IKA = 1mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage deviation over temperature range (Q grade)",
          "symbol": "VI(dev)",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": 27,
          "conditions": "VKA = Vref, IKA = 1mA",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage change to cathode voltage change ratio",
          "symbol": "ΔVref/ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1.4,
          "max": -2.7,
          "conditions": "IKA = 1mA, ΔVKA = 10V - Vref",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage change to cathode voltage change ratio",
          "symbol": "ΔVref/ΔVKA",
          "kind": "voltage_coefficient",
          "unit": "mV/V",
          "min": null,
          "typ": -1,
          "max": -2,
          "conditions": "IKA = 1mA, ΔVKA = 36V - 10V",
          "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 = 1mA, R1 = 10kΩ, R2 = ∞",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Reference input current deviation over temperature range",
          "symbol": "II(dev)",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 0.1,
          "max": 0.3,
          "conditions": "IKA = 1mA, 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 = 36V, Vref = 0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Dynamic impedance",
          "symbol": "|ZKA|",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.3,
          "max": 0.65,
          "conditions": "VKA = Vref, IKA = 1mA to 15mA",
          "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 (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range (absolute maximum)",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -65,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Cathode voltage (recommended)",
          "symbol": "VKA",
          "kind": "recommended_operating",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 36,
          "conditions": "Minimum printed as VREF (not a number); Vref nominal 2.5 V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Continuous cathode current range (recommended)",
          "symbol": "IKA",
          "kind": "recommended_operating",
          "unit": "mA",
          "min": 0.1,
          "typ": null,
          "max": 15,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating free-air temperature (Q grade, ATL43xLIxQ)",
          "symbol": "TA",
          "kind": "recommended_operating",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "ATL43xLIxQ, natural convection",
          "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 package, 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 package, 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 package, 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 package, 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 package, 3 pins",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "discovery_triggers": [
    "atl431libqdbzr"
  ],
  "discovery_pitch": "ATL431LIBQDBZR (Texas Instruments) component page with datasheet-verified CAD.",
  "visibility": "public"
}