UC2842N

{
  "slug": "uc2842n",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments AC-DC Controllers And Regulators, DIP-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power management (pmic)",
    "uc2842n",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "uc2842n.kicad_sym",
    "uc2842n.kicad_mod",
    "uc2842n.glb",
    "uc2842n.step",
    "uc2842n.lbr",
    "docs/hero.png",
    "docs/uc2842n-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "uc2842n-hero.glb",
    "uc2842n-hero.overlay.json"
  ],
  "component": {
    "mpn": "UC2842N",
    "manufacturer": "Texas Instruments",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc3842",
    "parts": {
      "symbol": "uc2842n.kicad_sym",
      "footprint": "uc2842n.kicad_mod",
      "model_3d": "uc2842n-hero.glb",
      "model_3d_plain": "uc2842n.glb",
      "model_3d_step": "uc2842n-etched.step",
      "model_3d_step_plain": "uc2842n.step",
      "lbr": "uc2842n.lbr"
    },
    "distributor_links": {
      "lcsc": "C701457",
      "digikey": "296-11176-5-ND",
      "mouser": "595-UC2842N"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T04:12:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-11176-5-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC2842N",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "COMP",
        "type": "output",
        "description": "Error amplifier compensation pin, where external compensation components are connected to modify the error amplifier output, and forcing COMP to GROUND externally sets zero duty cycle because the error amplifier is internally current-limited."
      },
      {
        "number": "2",
        "name": "VFB",
        "type": "input",
        "description": "Inverting input of the internal error amplifier used for the voltage feedback loop, where the lead should be kept as short as possible and stray capacitance minimized for stability."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "input",
        "description": "Primary-side current sense input to the PWM comparator, connected to the MOSFET current-sense resistor, with a recommended input voltage of 1 V and an absolute maximum analog input of 6.3 V."
      },
      {
        "number": "4",
        "name": "RT/CT",
        "type": "bidirectional",
        "description": "Oscillator timing pin, where a timing resistor RT from VREF and a timing capacitor CT to GROUND set fOSC = 1.72/(RRT×CCT), and timing resistors must never be smaller than 5 kΩ."
      },
      {
        "number": "5",
        "name": "GROUND",
        "type": "power_in",
        "description": "Analog and signal return ground that should be kept separate from the high-current gate driver return path so signals are not affected by switching current."
      },
      {
        "number": "6",
        "name": "OUTPUT",
        "type": "output",
        "description": "Totem-pole gate driver for the external MOSFET that sources and sinks peak currents up to 1 A, and is actively held low when VCC is below the turn-on threshold."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply input for the controller with a recommended range of 12 V to 28 V and an absolute maximum of 30 V from a low-impedance source, bypassed with at least 0.1 µF directly to GROUND."
      },
      {
        "number": "8",
        "name": "VREF",
        "type": "power_out",
        "description": "5 V reference output that requires at least a 0.1 µF ceramic bypass to GROUND placed close to the pin, with a recommended reference output current of -20 mA."
      }
    ],
    "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: The 8-pin pinout comes from Figure 5-1 (top view of the 8-pin SOIC, CDIP and PDIP packages) and was ; Pin types were mapped to KiCad ERC classes from the datasheet's I/O codes. RT/CT was listed as I/O a"
        ],
        "pages_sent": 38,
        "cost_usd": 0.2242,
        "at": "2026-10-08T04:12:18"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc3842",
        "pages": 61,
        "sha256": "0f875fd24cbb5fda",
        "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": "uc2842n.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "4a377a56a8d9e9c0b86c095ef9ecc1869ac19e7f5069a3247b294250bf4f235d",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "uc2842n-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "body on z = 0, through-hole leads below",
        "extents_mm": [
          7.874,
          9.27,
          6.98
        ],
        "zmin_mm": -3.3,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "1820ec33eb8b9bc8e7a6a2784600e5bc2ee0e0e784c43c53e593c73639ad2e12",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}