UC2843AD8TR

{
  "schema_version": 1,
  "type": "component",
  "slug": "uc2843ad8tr",
  "title": "UC2843AD8TR",
  "brief": "Texas Instruments DC-DC Converters, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "uc2843ad8tr"
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  "component": {
    "mpn": "UC2843AD8TR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/uc2843ad8tr.pdf",
    "parts": {
      "symbol": "uc2843ad8tr.kicad_sym",
      "footprint": "uc2843ad8tr.kicad_mod",
      "model_3d": "uc2843ad8tr-etched.glb",
      "model_3d_plain": "uc2843ad8tr.glb",
      "model_3d_step": "uc2843ad8tr-etched.step",
      "model_3d_step_plain": "uc2843ad8tr.step",
      "lbr": "uc2843ad8tr.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Output of the low-impedance 1-MHz internal error amplifier and input to the peak current limit / PWM comparator. Open-loop gain (AVOL) 80 dB; capable of sinking up to 6 mA and is not internally current limited."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Inverting input to the error amplifier, used to control the power converter voltage-feedback loop for stability."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Input to the peak current limit / PWM comparator. Used with a current sense resistor; the error-amplifier output voltage controls cycle-by-cycle peak current limit. Maximum peak current sense signal is internally clamped to 1 V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "input",
        "description": "Input to the internal oscillator, programmed with an external timing resistor (RT) and timing capacitor (CT). TI recommends CT of 470 pF to 4.7 nF and RT of 5 kΩ to 100 kΩ."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Controller signal ground. In the 8-pin package, both signal ground and gate-driver return share this pin."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Totem-pole gate-driver output. Can sink and source up to 1 A; a gate-drive resistor must be used to limit gate-driver current."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Bias input to the gate driver and the IC. Requires a bypass capacitor at least 10× the gate capacitance of the main switching FET. UC2843A UVLO on/off = 8.4 V / 7.6 V; absolute max 30 V."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5-V reference voltage output of the PWM controller. Must supply no more than 10 mA under normal operation; short-circuit protected at ~100 mA. Requires a 1 µF high-frequency bypass capacitor."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/uc2843ad8tr.pdf",
        "pages": 48,
        "sha256": "2105c9079933cb44",
        "source_tier": "mfr"
      },
      "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"
    }
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "uc2843ad8tr"
  ],
  "discovery_pitch": "UC2843AD8TR (Texas Instruments) 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",
    "uc2843ad8tr.kicad_sym",
    "uc2843ad8tr.kicad_mod",
    "uc2843ad8tr.glb",
    "uc2843ad8tr.step",
    "uc2843ad8tr-etched.step",
    "uc2843ad8tr.lbr",
    "docs/hero.png",
    "docs/uc2843ad8tr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
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  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "UC2843AD8TRD",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TR",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TRDR",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TRP",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TRN",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TRJG",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TRDW",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TRDWR",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TRFK",
      "kind": "packaging"
    },
    {
      "mpn": "UC2843AD8TRFN",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T13:27:33.046Z"
}