NCP1351BDR2G

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  "type": "component",
  "slug": "ncp1351bdr2g",
  "title": "NCP1351BDR2G",
  "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",
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    "mpn": "NCP1351BDR2G",
    "manufacturer": "onsemi",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "AC-DC Controllers and Regulators",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/ncp1351b-d.pdf",
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      "lbr": "ncp1351bdr2g.lbr"
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    "distributor_links": {
      "lcsc": "C86673"
    },
    "pins": [
      {
        "number": "1",
        "name": "FB",
        "type": "input",
        "description": "Feedback input. Sinking current out of this pin (typically via an optocoupler collector) reduces the switching frequency by extending the off time. Internally biased through a 40 uA pull-up from VDD."
      },
      {
        "number": "2",
        "name": "Ct",
        "type": "passive",
        "description": "Oscillator frequency timing pin. An external capacitor to GND sets the maximum switching frequency (fixed T_ON) obtained at no feedback current."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Current sense input. Senses the primary MOSFET current via a sense resistor using the negative-sensing technique, with a programmable peak-voltage threshold."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / analog return for all internal circuitry."
      },
      {
        "number": "5",
        "name": "DRV",
        "type": "output",
        "description": "Gate driver output. Delivers driving pulses directly to the external power MOSFET gate."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply input for the controller. Accepts up to 28 V with an internal clamp/UVLO management block (V_CCSTOP monitored)."
      },
      {
        "number": "7",
        "name": "LATCH",
        "type": "input",
        "description": "Latch-off input. Driving a voltage above V_LATCH on this pin fully latches off the controller (dedicated OTP/OVP input)."
      },
      {
        "number": "8",
        "name": "TIMER",
        "type": "passive",
        "description": "Fault timer capacitor. An external capacitor sets the fault-validation timeout during which feedback activity/overload is monitored before shutdown or auto-recovery is triggered."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/ncp1351b-d.pdf",
        "pages": 30,
        "sha256": "96cd46ad00515b08",
        "source_tier": "mfr"
      },
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      "pins": {
        "total": 8,
        "described": 8,
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        "refuses_to_fabricate": true
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    "pin1": {
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      "at": [
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        -1.905
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      "source": "silk-marker",
      "derived_from": "SOIC-8_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
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        "seat": "z = 0",
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          4.9,
          1.75
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
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        "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": [
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  "discovery_pitch": "NCP1351BDR2G (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
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  "updated_at": "2026-09-25T02:54:54.693Z"
}