INA253A3IPWR

{
  "slug": "ina253a3ipwr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Current Sense Amplifiers, TSSOP-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "amplifiers-comparators",
    "ina253a3ipwr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ina253a3ipwr.kicad_sym",
    "ina253a3ipwr.kicad_mod",
    "ina253a3ipwr.glb",
    "ina253a3ipwr.step",
    "ina253a3ipwr.lbr",
    "docs/hero.png",
    "docs/ina253a3ipwr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ina253a3ipwr-hero.glb",
    "ina253a3ipwr-hero.overlay.json"
  ],
  "component": {
    "mpn": "INA253A3IPWR",
    "manufacturer": "Texas Instruments",
    "package": "TSSOP-20",
    "pin_count": 20,
    "category": "Amplifiers/Comparators",
    "subcategory": "Current Sense Amplifiers",
    "datasheet": "https://www.ti.com/cn/lit/gpn/ina253",
    "parts": {
      "symbol": "ina253a3ipwr.kicad_sym",
      "footprint": "ina253a3ipwr.kicad_mod",
      "model_3d": "ina253a3ipwr-hero.glb",
      "model_3d_plain": "ina253a3ipwr.glb",
      "model_3d_step": "ina253a3ipwr-etched.step",
      "model_3d_step_plain": "ina253a3ipwr.step",
      "lbr": "ina253a3ipwr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2862605",
      "digikey": "296-INA253A3IPWRTR-ND",
      "mouser": "595-INA253A3IPWR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T19:34:43Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-INA253A3IPWRTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-INA253A3IPWR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IS–",
        "type": "input",
        "description": "Analog input connected to the load side of the internal shunt; connect to the load."
      },
      {
        "number": "2",
        "name": "IS–",
        "type": "input",
        "description": "Analog input connected to the load side of the internal shunt; connect to the load."
      },
      {
        "number": "3",
        "name": "IS–",
        "type": "input",
        "description": "Analog input connected to the load side of the internal shunt; connect to the load."
      },
      {
        "number": "4",
        "name": "SH–",
        "type": "output",
        "description": "Kelvin connection to the internal shunt; connect to IN- if no filtering is needed."
      },
      {
        "number": "5",
        "name": "IN–",
        "type": "input",
        "description": "Voltage input from the load side of the shunt resistor."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device."
      },
      {
        "number": "7",
        "name": "DNC1",
        "type": "unconnected",
        "description": "Do not connect this pin to any potential; leave it floating."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect."
      },
      {
        "number": "9",
        "name": "VS",
        "type": "power_in",
        "description": "Analog power supply, 2.7 V to 5.5 V."
      },
      {
        "number": "10",
        "name": "REF2",
        "type": "input",
        "description": "Reference voltage 2 input, 0 V to VS; do not connect to any voltage below GND or above VS."
      },
      {
        "number": "11",
        "name": "REF1",
        "type": "input",
        "description": "Reference voltage 1 input, 0 V to VS; do not connect to any voltage below GND or above VS."
      },
      {
        "number": "12",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect."
      },
      {
        "number": "13",
        "name": "OUT",
        "type": "output",
        "description": "Analog output voltage."
      },
      {
        "number": "14",
        "name": "DNC2",
        "type": "unconnected",
        "description": "Do not connect this pin to any potential; leave it floating."
      },
      {
        "number": "15",
        "name": "NC",
        "type": "unconnected",
        "description": "Reserved analog pin; the datasheet says to connect it to ground."
      },
      {
        "number": "16",
        "name": "IN+",
        "type": "input",
        "description": "Voltage input from the supply side of the shunt resistor."
      },
      {
        "number": "17",
        "name": "SH+",
        "type": "output",
        "description": "Kelvin connection to the internal shunt; connect to IN+ if no filtering is needed."
      },
      {
        "number": "18",
        "name": "IS+",
        "type": "input",
        "description": "Analog input; connect to the supply."
      },
      {
        "number": "19",
        "name": "IS+",
        "type": "input",
        "description": "Analog input; connect to the supply."
      },
      {
        "number": "20",
        "name": "IS+",
        "type": "input",
        "description": "Analog input; connect to the supply."
      }
    ],
    "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: Pin 15 is named NC in the table but is listed as an 'Analog' type reserved pin that must be connecte; The pin diagram shows the sense pins as IS± and SH±; the pin table names them IS-/IS+ and SH-/SH+. I; DNC1 and DNC2 are 'do not connect' pins and are mapped to unconnected. Pins 8 and 12 are plain NC an"
        ],
        "pages_sent": 11,
        "cost_usd": 0.0647,
        "at": "2026-10-08T19:34:04"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/ina253",
        "pages": 36,
        "sha256": "aac4f0956c4235a7",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 20,
        "described": 20,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ina253a3ipwr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "97339947f3a7196470ec2f1d9f9b92bb2fc2ab66ad53be0cf105192585ef3c9a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ina253a3ipwr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.4,
          6.5,
          1.2
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "82079dff02cc8dea960969ff11d22fd11a45fd8b209f7dedbbefaa239fae285f",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}