UC3638DWTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc3638dwtr",
  "title": "UC3638DWTR",
  "brief": "Texas Instruments Current Sensors, SOIC-20-300mil. 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",
    "magnetic sensors",
    "uc3638dwtr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "UC3638DWTR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-20-300mil",
    "pin_count": 20,
    "category": "Magnetic Sensors",
    "subcategory": "Current Sensors",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc3638",
    "parts": {
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      "footprint": "uc3638dwtr.kicad_mod",
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      "model_3d_plain": "uc3638dwtr.glb",
      "model_3d_step": "uc3638dwtr-etched.step",
      "model_3d_step_plain": "uc3638dwtr.step",
      "lbr": "uc3638dwtr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2871342",
      "digikey": "2156-UC3638DWTR-ND",
      "mouser": "595-UC3638DWTR"
    },
    "distributor_check": {
      "checked_at": "2026-10-10T08:23:48Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "2156-UC3638DWTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC3638DWTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "RT",
        "type": "passive",
        "description": "Oscillator timing resistor connection that sets the triangle oscillator frequency together with CT."
      },
      {
        "number": "2",
        "name": "SD",
        "type": "input",
        "description": "Remote shutdown input with a 2.5V threshold; absolute maximum VEE-0.3V and above."
      },
      {
        "number": "3",
        "name": "AOUT1",
        "type": "output",
        "description": "Open-collector driver output A1 rated 60V maximum and 50mA, used as a highside drive signal in a full bridge."
      },
      {
        "number": "4",
        "name": "AOUT2",
        "type": "output",
        "description": "Totem-pole output driver A2 referenced to PVE, rated 0.25A continuous and 500mA peak."
      },
      {
        "number": "5",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input, 40V absolute maximum referenced to VEE, with undervoltage lockout."
      },
      {
        "number": "6",
        "name": "PVE",
        "type": "power_in",
        "description": "Reference connection for the AOUT2 and BOUT2 totem-pole output drivers (output ground/low-side reference)."
      },
      {
        "number": "7",
        "name": "BOUT2",
        "type": "output",
        "description": "Totem-pole output driver B2 referenced to PVE, rated 0.25A continuous and 500mA peak."
      },
      {
        "number": "8",
        "name": "BOUT1",
        "type": "output",
        "description": "Open-collector driver output B1 rated 60V maximum and 50mA, used as a highside drive signal in a full bridge."
      },
      {
        "number": "9",
        "name": "DB",
        "type": "input",
        "description": "Deadband adjust input, programmed by tapping a voltage divider off the 5V reference; 0.3 to 10V absolute maximum."
      },
      {
        "number": "10",
        "name": "AREFIN",
        "type": "input",
        "description": "Programmable input to the reference buffer that sets AREF, allowing single or dual supply operation; absolute maximum VEE-0.3V and above."
      },
      {
        "number": "11",
        "name": "AREF",
        "type": "output",
        "description": "Buffered analog reference output (ramp/error-amp midpoint reference) set by AREFIN; absolute maximum VEE-0.3V and above."
      },
      {
        "number": "12",
        "name": "COMP",
        "type": "output",
        "description": "Voltage (error) amplifier output used for loop compensation and feeding the PWM comparators."
      },
      {
        "number": "13",
        "name": "INV",
        "type": "input",
        "description": "Inverting input of the voltage amplifier; 0.3 to 10V absolute maximum."
      },
      {
        "number": "14",
        "name": "REF",
        "type": "power_out",
        "description": "Precision 5V reference output, internally current limited; typical 5V at -1mA."
      },
      {
        "number": "15",
        "name": "VEE",
        "type": "power_in",
        "description": "Negative supply / ground reference for the device; VCC is rated 40V above it."
      },
      {
        "number": "16",
        "name": "CS+",
        "type": "input",
        "description": "Positive input of the differential X5 current sense amplifier; VEE-1V to VCC."
      },
      {
        "number": "17",
        "name": "CSOUT",
        "type": "output",
        "description": "Current sense amplifier output; 0.3 to 10V absolute maximum."
      },
      {
        "number": "18",
        "name": "CS-",
        "type": "input",
        "description": "Negative input of the differential X5 current sense amplifier; VEE-1V to VCC."
      },
      {
        "number": "19",
        "name": "CT",
        "type": "passive",
        "description": "Oscillator timing capacitor connection that sets the triangle oscillator frequency together with RT; absolute maximum VEE-0.3V and above."
      },
      {
        "number": "20",
        "name": "PVSET",
        "type": "input",
        "description": "Oscillator peak/valley amplitude program input, set from a divider off the 5V reference; 0.3 to 10V absolute maximum."
      }
    ],
    "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": "vision",
        "consensus_model": "claude-opus-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin numbering taken from the SOIC-20 DW top-view diagram on page 2; it differs from the DIL-20 numbe; Types for PVE, AREF, COMP and the RT/CT timing pins are judgement calls, since the datasheet text I ",
          "vision extraction: provenance cannot be text-verified; needs consensus"
        ],
        "pages_sent": 12,
        "cost_usd": 0.3457,
        "at": "2026-10-10T08:23:17"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc3638",
        "pages": 18,
        "sha256": "a4229ce925fc892c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
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      "footprint": "viewers/footprint.html"
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        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
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        "role": "eda",
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        "zmin_mm": 0,
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        "footprint_binding": "identity",
        "sha256": "82017faf22666193b2552c72b400370006a2dc6ce3c5e13d03c3864848b5d006",
        "checked": "2026-10-10",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-20-300mil",
      "Category": "Magnetic Sensors",
      "Pins": "20"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
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  "discovery_triggers": [
    "uc3638dwtr"
  ],
  "discovery_pitch": "UC3638DWTR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
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    "path": "docs/hero.png"
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