EG1256

{
  "schema_version": 1,
  "type": "component",
  "slug": "eg1256",
  "title": "EG1256",
  "brief": "EG Micro AC-DC Controllers And Regulators, SOP-8. 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)",
    "eg1256",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "EG1256",
    "manufacturer": "EG Micro",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/17414499314f295bf7491f3cb2882903.pdf",
    "parts": {
      "symbol": "eg1256.kicad_sym",
      "footprint": "eg1256.kicad_mod",
      "model_3d": "eg1256-hero.glb",
      "model_3d_plain": "eg1256.glb",
      "model_3d_step": "eg1256-etched.step",
      "model_3d_step_plain": "eg1256.step",
      "lbr": "eg1256.lbr"
    },
    "distributor_links": {
      "lcsc": "C48580025"
    },
    "distributor_check": {
      "checked_at": "2026-10-09T23:31:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 539 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Feedback pin whose voltage, together with the current-sense signal, sets the PWM duty cycle; the datasheet gives an open-circuit voltage of 4.4 V and a short-circuit current of 0.8 mA when FB is grounded."
      },
      {
        "number": "2",
        "name": "CC",
        "type": "passive",
        "description": "Constant-current setting pin: an external resistor sets the CC output current, roughly (VCC-2V)/RCC, and leaving CC floating disables the constant-current control function."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Current-sense pin that monitors the voltage across the sense resistor for cycle-by-cycle current limiting, with a 0.8 V current-limit threshold (Vcs1) and a 1 V over-current threshold (Vcs2) and an 80 ns leading-edge blanking time."
      },
      {
        "number": "4",
        "name": "RI",
        "type": "passive",
        "description": "Frequency-setting pin: a resistor from RI to GND sets the PWM switching frequency by Fosc(kHz)=4300/RI(kΩ), with the datasheet's typical design point at RI=43 kΩ."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Chip ground pin for the controller."
      },
      {
        "number": "6",
        "name": "OUT",
        "type": "output",
        "description": "Gate-drive output that drives the gate of the external power MOSFET, with output voltage clamped to 17 V maximum when VCC exceeds 20 V and a source/sink capability of 0.5 A / 0.8 A (pulse width ≤10 µs)."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Power supply pin with an absolute maximum rating of 32 V, a 38 V zener clamp at 10 mA, and UVLO thresholds of 14 V (turn-on) and 9 V (turn-off)."
      },
      {
        "number": "8",
        "name": "SS",
        "type": "passive",
        "description": "Soft-start pin where an external capacitor is charged by an internal 10 µA constant current source, and soft-start is complete when the SS voltage reaches 3.5 V."
      }
    ],
    "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 datasheet's pin table (page 5) gives pin numbers, names and functions but no formal electrical t; The datasheet gives package outline only for SOP8 (section 9.1, outline drawing without a dimension ; The datasheet's VCC UVLO labels are printed as UVLO_OFF = 14 V ('开启电压', turn-on) and UVLO_ON = 9 V ("
        ],
        "pages_sent": 11,
        "cost_usd": 0.0405,
        "at": "2026-10-09T23:27:53"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/17414499314f295bf7491f3cb2882903.pdf",
        "pages": 11,
        "sha256": "62776cc5a8bbb949",
        "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": "eg1256.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "eg1256-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "f934de8c14a525bee970c75366164e0d0988242d658fdfdc1c21f2c36ad541b1",
        "checked": "2026-10-09",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "EG Micro",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "eg1256"
  ],
  "discovery_pitch": "EG1256 (EG Micro) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "eg1256.kicad_sym",
    "eg1256.kicad_mod",
    "eg1256.glb",
    "eg1256.step",
    "eg1256.lbr",
    "docs/hero.png",
    "docs/eg1256-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "eg1256-hero.glb",
    "eg1256-hero.overlay.json"
  ],
  "visibility": {
    "public": true
  }
}