NCP1252EDR2G

{
  "schema_version": 1,
  "type": "component",
  "slug": "ncp1252edr2g",
  "title": "NCP1252EDR2G",
  "brief": "onsemi AC-DC Controllers and Regulators, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "ncp1252edr2g"
  ],
  "component": {
    "mpn": "NCP1252EDR2G",
    "manufacturer": "onsemi",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "AC-DC Controllers and Regulators",
    "datasheet": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2210201930_onsemi-NCP1252EDR2G_C904430.pdf",
    "parts": {
      "symbol": "ncp1252edr2g.kicad_sym",
      "footprint": "ncp1252edr2g.kicad_mod",
      "model_3d": "ncp1252edr2g-etched.glb",
      "model_3d_plain": "ncp1252edr2g.glb",
      "model_3d_step": "ncp1252edr2g-etched.step",
      "model_3d_step_plain": "ncp1252edr2g.step",
      "lbr": "ncp1252edr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C904430"
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Feedback input. Directly connects to an optocoupler collector. Internally pulled up (~3.5 kΩ) to Vdd; the FB voltage is divided by 3 to form the current setpoint (VILIM = 1 V). Max FB current 1.5 mA."
      },
      {
        "number": "2",
        "name": "BO",
        "type": "input",
        "description": "Brown-Out input. Monitors an image of the input bulk voltage via a resistor divider to provide brown-out protection. Threshold VBO = 1 V typ; internal 10 µA hysteresis current source."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Current Sense input. Monitors the primary MOSFET current through a sense resistor and sets the ramp-compensation amplitude. Cycle-by-cycle limit VILIM = 1 V; fault threshold FCS = 1 V; 160 ns leading-edge blanking; internal ramp comp Rramp ≈ 26.5 kΩ."
      },
      {
        "number": "4",
        "name": "RT",
        "type": "passive",
        "description": "Timing element. A resistor to ground fixes the switching frequency (RT = 43 kΩ → fOSC ≈ 100 kHz; RT = 8.5 kΩ → fOSC ≈ 500 kHz). Frequency is jittered ±5% at 3.33 ms period."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Controller ground reference pin."
      },
      {
        "number": "6",
        "name": "DRV",
        "type": "output",
        "description": "Gate driver output to the external power MOSFET. +500 mA source / -800 mA sink capability; source resistance 10 Ω typ, sink 6 Ω typ; clamped at 15 V typ (max 18 V) to protect the MOSFET gate."
      },
      {
        "number": "7",
        "name": "VCC",
        "type": "power_in",
        "description": "Main supply pin. Operating range 8 V to 28 V (30 V transient <10 ms for IVCC<20 mA). For the E version, VCC(on) ≈ 14 V, VCC(off) ≈ 9 V with 5 V hysteresis (auto-recovery UVLO). Max injected current 20 mA."
      },
      {
        "number": "8",
        "name": "SSTART",
        "type": "passive",
        "description": "Soft-start pin. A capacitor to ground sets the soft-start duration (charge current ISS = 10 µA typ, VSS = 4 V). The pin is held to ground during the internal start-up delay timer (no delay for E version)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://wmsc.lcsc.com/wmsc/upload/file/pdf/v2/lcsc/2210201930_onsemi-NCP1252EDR2G_C904430.pdf",
        "pages": 22,
        "sha256": "5eceb5f0fc9b12f2",
        "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"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
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        "file": "ncp1252edr2g.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ncp1252edr2g-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": "0fa2899f00f08c725bf7f8c333c53e469c5c51d4cb6a8968cfdd8de08d5e7791",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ncp1252edr2g"
  ],
  "discovery_pitch": "NCP1252EDR2G (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
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  "files": [
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    "README.md",
    "ncp1252edr2g.kicad_sym",
    "ncp1252edr2g.kicad_mod",
    "ncp1252edr2g.glb",
    "ncp1252edr2g.step",
    "ncp1252edr2g-etched.step",
    "ncp1252edr2g.lbr",
    "docs/hero.png",
    "docs/ncp1252edr2g-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "NCP1252EDR2G",
      "kind": "packaging"
    },
    {
      "mpn": "NCP1252EDR2GEPG",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T02:54:22.146Z"
}