L5970ADTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "l5970adtr",
  "title": "L5970ADTR",
  "brief": "STMicroelectronics DC-DC Converters, SOIC-8. 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)",
    "l5970adtr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "L5970ADTR",
    "manufacturer": "STMicroelectronics",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912459784589312",
    "parts": {
      "symbol": "l5970adtr.kicad_sym",
      "footprint": "l5970adtr.kicad_mod",
      "model_3d": "l5970adtr-etched.glb",
      "model_3d_plain": "l5970adtr.glb",
      "model_3d_step": "l5970adtr-etched.step",
      "model_3d_step_plain": "l5970adtr.step",
      "lbr": "l5970adtr.lbr"
    },
    "distributor_links": {
      "lcsc": "C500656"
    },
    "pins": [
      {
        "number": "1",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulated step-down converter output; delivers up to 1.5A DC current to load, output voltage adjustable from 1.235V to 35V depending on external feedback divider network."
      },
      {
        "number": "2",
        "name": "SYNC",
        "type": "bidirectional",
        "description": "Master/Slave synchronization pin; outputs signal synchronous with internal power turn-off at 500kHz when open, accepts external signal above 500kHz for device synchronization, acts as master or slave when connected with other devices."
      },
      {
        "number": "3",
        "name": "INH",
        "type": "input",
        "description": "Active-high inhibit control input; disables device when above 2.2V (OFF state), enables when below 0.8V (ON state), must be grounded if unused or will be disabled by internal pull-up when floating."
      },
      {
        "number": "4",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier output connected to external compensation network; sets loop response and stability characteristics of the voltage feedback control loop."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input for output voltage regulation; direct connection to output sets 1.235V output voltage, external resistor divider with typical 4.7kΩ resistor to ground required for output voltages up to 35V."
      },
      {
        "number": "6",
        "name": "VREF",
        "type": "power_out",
        "description": "3.3V reference voltage output supplying internal circuitry; provides stable 3.234-3.366V output across 4.4-36V input range with no filter capacitor required for stability."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; common return path for all internal circuits and external connections."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Unregulated DC input voltage supply; accepts 4.4V to 36V input range for operation of internal voltage regulator and 1.5A internal P-DMOS power switch."
      }
    ],
    "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": 11,
        "cost_usd": 0.121,
        "at": "2026-09-23T01:24:38"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912459784589312",
        "pages": 11,
        "sha256": "cf023a59e3ab8e46",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "l5970adtr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "l5970adtr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.75
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "0488712f19e0b171a288efc6adb0864fd4a7fd3498970869c50503a663fee42f",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "STMicroelectronics",
      "Package": "SOIC-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "cf023a59e3ab8e46",
      "rows": [
        {
          "name": "Operating input voltage range",
          "symbol": "VCC",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 4.4,
          "typ": null,
          "max": 36,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output DC voltage",
          "symbol": "V1",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -1,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Output peak voltage",
          "symbol": "V1",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -5,
          "typ": null,
          "max": 40,
          "conditions": "t = 0.1µs",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Input voltage",
          "symbol": "V8",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 40,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Analog pins",
          "symbol": "V4, V5",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "SYNC pin voltage",
          "symbol": "V2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Power dissipation",
          "symbol": "Ptot",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 0.75,
          "conditions": "Tamb ≤ 60°C",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature range",
          "symbol": "Tj",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Storage temperature range",
          "symbol": "Tstg",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Thermal resistance junction to ambient",
          "symbol": "Rth (j-amb)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": null,
          "max": 120,
          "conditions": "Package mounted on board",
          "source_page": 2,
          "source": "datasheet"
        },
        {
          "name": "Mosfet on resistance",
          "symbol": "RDSON",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 0.25,
          "max": 0.5,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Maximum limiting current",
          "symbol": "Il",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.8,
          "max": null,
          "conditions": "VCC = 4.4V to 36V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency",
          "symbol": "fs",
          "kind": "electrical",
          "unit": "KHz",
          "min": null,
          "typ": 500,
          "max": null,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Duty cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 0,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Voltage feedback",
          "symbol": "V5",
          "kind": "electrical",
          "unit": "V",
          "min": 1.22,
          "typ": 1.235,
          "max": 1.25,
          "conditions": "4.4V < VCC < 36V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Efficiency",
          "symbol": "η",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "VO = 5V, VCC = 12V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Total operating quiescent current",
          "symbol": "Iqop",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 5,
          "max": 7,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Quiescent current",
          "symbol": "Iq",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 2.7,
          "max": null,
          "conditions": "Duty Cycle = 0; VFB = 1.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Total stand-by quiescent current",
          "symbol": "Iqst-by",
          "kind": "electrical",
          "unit": "µA",
          "min": null,
          "typ": 50,
          "max": 100,
          "conditions": "Vinh > 2.2V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "INH threshold voltage, device ON",
          "symbol": "INH",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.8,
          "conditions": "Device ON",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "INH threshold voltage, device OFF",
          "symbol": "INH",
          "kind": "electrical",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": null,
          "conditions": "Device OFF",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "High level output voltage",
          "symbol": "VOH",
          "kind": "electrical",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": null,
          "conditions": "VFB = 1V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Low level output voltage",
          "symbol": "VOL",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.4,
          "conditions": "VFB = 1.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Source output current",
          "symbol": "Io source",
          "kind": "electrical",
          "unit": "µA",
          "min": 200,
          "typ": null,
          "max": 300,
          "conditions": "VCOMP = 1.9V; VFB = 1V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Sink output current",
          "symbol": "Io sink",
          "kind": "electrical",
          "unit": "mA",
          "min": 1,
          "typ": null,
          "max": 1.5,
          "conditions": "VCOMP = 1.9V; VFB = 1.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Source bias current",
          "symbol": "Ib",
          "kind": "electrical",
          "unit": "µA",
          "min": 2.5,
          "typ": null,
          "max": 4,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "DC open loop gain",
          "symbol": "",
          "kind": "electrical",
          "unit": "dB",
          "min": 50,
          "typ": 57,
          "max": null,
          "conditions": "RL = ∞",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Transconductance",
          "symbol": "gm",
          "kind": "electrical",
          "unit": "mS",
          "min": null,
          "typ": 2.3,
          "max": null,
          "conditions": "Icomp = -0.1mA to 0.1mA; VCOMP = 1.9V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SYNC high input voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": null,
          "conditions": "VCC = 4.4V to 36V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SYNC low input voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 0.74,
          "conditions": "VCC = 4.4V to 36V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Slave sink current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.11,
          "typ": null,
          "max": 0.25,
          "conditions": "Vsync = 0.74V (guaranteed by design)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Slave sink current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 0.21,
          "typ": null,
          "max": 0.45,
          "conditions": "Vsync = 2.33V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Master output amplitude",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 2.75,
          "typ": 3,
          "max": null,
          "conditions": "Isource = 3mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output pulse width",
          "symbol": "",
          "kind": "electrical",
          "unit": "µs",
          "min": 0.2,
          "typ": null,
          "max": 0.35,
          "conditions": "no load, Vsync = 1.65V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.234,
          "typ": 3.3,
          "max": 3.366,
          "conditions": "IREF = 0 to 5mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Reference voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.2,
          "typ": 3.3,
          "max": 3.399,
          "conditions": "IREF = 0 to 5mA; VCC = 4.4V to 36V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Line regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 5,
          "max": 10,
          "conditions": "IREF = 0mA; VCC = 4.4V to 36V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Load regulation",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 8,
          "max": 15,
          "conditions": "IREF = 0 to 5mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Short circuit current",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": 10,
          "typ": 18,
          "max": 30,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "l5970adtr"
  ],
  "discovery_pitch": "L5970ADTR (STMicroelectronics) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "l5970adtr.kicad_sym",
    "l5970adtr.kicad_mod",
    "l5970adtr.glb",
    "l5970adtr.step",
    "l5970adtr.lbr",
    "docs/hero.png",
    "docs/l5970adtr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-24T23:27:26.674Z"
}