UC2845ADTR

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc2845adtr",
  "title": "UC2845ADTR",
  "brief": "Texas Instruments AC-DC Controllers And Regulators, SOIC-14. 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)",
    "uc2845adtr",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UC2845ADTR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-14",
    "pin_count": 14,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303011630_Texas-Instruments-UC2845ADTR_C2657921.pdf",
    "parts": {
      "symbol": "uc2845adtr.kicad_sym",
      "footprint": "uc2845adtr.kicad_mod",
      "model_3d": "uc2845adtr-hero.glb",
      "model_3d_plain": "uc2845adtr.glb",
      "model_3d_step": "uc2845adtr-etched.step",
      "model_3d_step_plain": "uc2845adtr.step",
      "lbr": "uc2845adtr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2657921",
      "digikey": "296-45278-2-ND",
      "mouser": "595-UC2845ADTR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T15:50:32Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-45278-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC2845ADTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Low-impedance 1 MHz internal error amplifier output that is also the input to the peak current limit/PWM comparator, with open-loop gain (AVOL) of 80 dB; it can sink a maximum of 6 mA and is not internally current limited."
      },
      {
        "number": "2",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection on the SOIC-14 package."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Error amplifier input used to close the power converter voltage feedback loop and tune loop stability."
      },
      {
        "number": "4",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection on the SOIC-14 package."
      },
      {
        "number": "5",
        "name": "ISENSE",
        "type": "input",
        "description": "Input to the peak current limit/PWM comparator; with a current sense resistor it sets the cycle-by-cycle peak current limit, and the maximum peak current sense signal is internally clamped at 1 V."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection on the SOIC-14 package."
      },
      {
        "number": "7",
        "name": "RT/CT",
        "type": "input",
        "description": "Internal oscillator timing input programmed with external resistor RT and capacitor CT; TI recommends CT between 470 pF and 4.7 nF and RT between 5 kΩ and 100 kΩ."
      },
      {
        "number": "8",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground and gate driver return path, which can be star-grounded to keep gate driver return current away from the signal ground pin GND and reduce PWM instability."
      },
      {
        "number": "9",
        "name": "GND",
        "type": "power_in",
        "description": "Controller signal ground."
      },
      {
        "number": "10",
        "name": "OUTPUT",
        "type": "output",
        "description": "1 A totem-pole gate driver output that can source and sink up to 1 A of gate drive current, and a gate drive resistor must be used to limit that current."
      },
      {
        "number": "11",
        "name": "VC",
        "type": "input",
        "description": "Gate driver bias input; the pin must have a bias capacitor at least 10 times the gate capacitance of the main switching FET."
      },
      {
        "number": "12",
        "name": "VCC",
        "type": "power_in",
        "description": "Gate driver bias supply input; the pin must have a bias capacitor at least 10 times the gate capacitance of the main switching FET, and the device is specified with VCC of 11 V minimum for operation and a 30 V maximum for low-impedance sources."
      },
      {
        "number": "13",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection on the SOIC-14 package."
      },
      {
        "number": "14",
        "name": "VREF",
        "type": "power_in",
        "description": "PWM controller 5 V reference output that must supply no more than 10 mA in normal operation, is short-circuit protected at about 100 mA, and requires a 1 µF high-frequency bypass capacitor with the VCC capacitor at least 10 times larger than the VREF capacitor."
      }
    ],
    "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: Pinout taken from Table 5-1 (SOIC (14) column) and cross-checked against Figure 5-3 (SOIC 14-pin D, ; Table 5-1 labels VCC and VC as type 'I' (input). VCC is a supply pin, so I used power_in for VCC per; Datasheet specifies VCC 11 V without clear min/max qualifier in the recommended conditions table, so"
        ],
        "pages_sent": 25,
        "cost_usd": 0.1424,
        "at": "2026-10-08T15:50:10"
      },
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2303011630_Texas-Instruments-UC2845ADTR_C2657921.pdf",
        "pages": 50,
        "sha256": "0eebf00e4b265207",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 14,
        "described": 14,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
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      "footprint": "viewers/footprint.html"
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    "models_3d": [
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        "file": "uc2845adtr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          8.7,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "3b9a775da256c8afcc28dcddfbc2eb3f266107fe61ce8446d96f2c52b6f44a70",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc2845adtr-etched.step",
        "role": "eda",
        "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": "92b60e578eef586ea1799d162b7f3b8770a03cf5af581a9e3e43187d335df49a",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-14",
      "Category": "Power Management (PMIC)",
      "Pins": "14"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
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  "discovery_triggers": [
    "uc2845adtr"
  ],
  "discovery_pitch": "UC2845ADTR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
  },
  "files": [
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    "README.md",
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    "uc2845adtr.glb",
    "uc2845adtr.step",
    "uc2845adtr.lbr",
    "docs/hero.png",
    "docs/uc2845adtr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc2845adtr-hero.glb",
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  "visibility": {
    "public": true
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}