NCP4318ALFPDR2G

{
  "schema_version": 1,
  "type": "component",
  "slug": "ncp4318alfpdr2g",
  "title": "NCP4318ALFPDR2G",
  "brief": "onsemi Power Management - Specialized, SOIC-8-EP. 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)",
    "ncp4318alfpdr2g",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "NCP4318ALFPDR2G",
    "manufacturer": "onsemi",
    "package": "SOIC-8-EP",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "Power Management - Specialized",
    "datasheet": "https://www.onsemi.com/pdf/datasheet/ncp4318alfp-d.pdf",
    "parts": {
      "symbol": "ncp4318alfpdr2g.kicad_sym",
      "footprint": "ncp4318alfpdr2g.kicad_mod",
      "model_3d": "ncp4318alfpdr2g-hero.glb",
      "model_3d_plain": "ncp4318alfpdr2g-etched.glb",
      "model_3d_step": "ncp4318alfpdr2g-etched.step",
      "model_3d_step_plain": "ncp4318alfpdr2g.step",
      "lbr": "ncp4318alfpdr2g.lbr"
    },
    "distributor_links": {
      "lcsc": "C20047205",
      "digikey": "488-NCP4318ALFPDR2GTR-ND",
      "mouser": "863-NCP4318ALFPDR2G"
    },
    "distributor_check": {
      "checked_at": "2026-10-29T03:24:26Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "488-NCP4318ALFPDR2GTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "863-NCP4318ALFPDR2G",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "GATE1",
        "type": "output",
        "description": "Gate drive output for SR MOSFET1; the gate output voltage is rated −0.3 V to 17 V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the device; all voltage values in the datasheet are referenced to this pin."
      },
      {
        "number": "3",
        "name": "VS1",
        "type": "input",
        "description": "Synchronous rectifier source sense input for SR1; recommended operating range is −0.3 V to 5 V, with a 200 ns dynamic limit of −4 V to 5.5 V."
      },
      {
        "number": "4",
        "name": "VD1",
        "type": "input",
        "description": "Synchronous rectifier drain sense input; the IOFFSET1 current source flows out of this pin so an external series resistor sets the turn-off threshold, and is disabled during VDD undervoltage or green-mode switching disable, with drain sense rated −4 V to 200 V (recommended −0.7 V to 180 V)."
      },
      {
        "number": "5",
        "name": "VS2",
        "type": "input",
        "description": "Synchronous rectifier source sense input for SR2; recommended operating range is −0.3 V to 5 V, with a 200 ns dynamic limit of −4 V to 5.5 V."
      },
      {
        "number": "6",
        "name": "VD2",
        "type": "input",
        "description": "Synchronous rectifier drain sense input; the IOFFSET2 current source flows out of this pin so an external series resistor sets the turn-off threshold, and is disabled during VDD undervoltage or green-mode switching disable, with drain sense rated −4 V to 200 V (recommended −0.7 V to 180 V)."
      },
      {
        "number": "7",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply voltage input; recommended operating range is 0 V to 35 V, with an absolute maximum of −0.3 V to 37 V."
      },
      {
        "number": "8",
        "name": "GATE2",
        "type": "output",
        "description": "Gate drive output for SR MOSFET2; the gate output voltage is rated −0.3 V to 17 V."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "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 pin-number table on page 3 (NCP4318A column) is used for this pinout. The figure text on page 1 ; The datasheet text provided does not state how the exposed pad (EP) of SOIC-8 EP should be connected; Pins 1 to 8 are taken from the NCP4318A column. The NCP4318ALFPDR2G part number carries the 'A' pin-",
          "exposed pad 9 added from the footprint"
        ],
        "pages_sent": 8,
        "cost_usd": 0.0503,
        "at": "2026-10-29T03:24:10"
      },
      "datasheet": {
        "url": "https://www.onsemi.com/pdf/datasheet/ncp4318alfp-d.pdf",
        "pages": 26,
        "sha256": "907d01048d8bb997",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
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        "file": "ncp4318alfpdr2g.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ncp4318alfpdr2g-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "centre_offset_mm": 0,
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        "checked": "2026-10-29",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "SOIC-8-EP",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "907d01048d8bb9977ce2e6a5a45510b392eb7e04d17d16d4197f8794a189346c",
      "rows": [
        {
          "name": "VDD Pin Supply Voltage to GND",
          "symbol": "VDD",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 35,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Drain Sense Input Pin Voltage",
          "symbol": "VD1, VD2",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.7,
          "typ": null,
          "max": 180,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Source Sense Input Pin Voltage",
          "symbol": "VS1, VS2",
          "kind": "recommended_operating",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Supply Input Pin Voltage",
          "symbol": "VDD",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 37,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Drain Sense Input Pin Voltage",
          "symbol": "VD1, VD2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -4,
          "typ": null,
          "max": 200,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Gate Drive Output Pin Voltage",
          "symbol": "VGATE1, VGATE2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 17,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Source Sense Input Pin Voltage",
          "symbol": "VS1, VS2",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Source Sense Input Pin Dynamic Voltage",
          "symbol": "VS1-DYN, VS2-DYN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -4,
          "typ": null,
          "max": 5.5,
          "conditions": "Pulse Width = 200 ns",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Operating Junction Temperature (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Storage Temperature Range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": -60,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Power Dissipation SOIC-8 EP",
          "symbol": "PD",
          "kind": "absolute_maximum",
          "unit": "W",
          "min": null,
          "typ": null,
          "max": 3.7,
          "conditions": "TA = 25C, SOIC-8 EP (Note 3)",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering, 10 Seconds)",
          "symbol": "TL",
          "kind": "absolute_maximum",
          "unit": "C",
          "min": null,
          "typ": null,
          "max": 260,
          "conditions": "10 s soldering",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply Turn-on Threshold",
          "symbol": "VDD-ON",
          "kind": "electrical",
          "unit": "V",
          "min": 4,
          "typ": null,
          "max": 4.3,
          "conditions": "VDD rising with 4.3 V / 1 ms",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Turn-off Threshold",
          "symbol": "VDD-OFF",
          "kind": "electrical",
          "unit": "V",
          "min": 3.6,
          "typ": null,
          "max": 3.8,
          "conditions": "VDD < VDD-OFF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "SR Gate Enable Threshold Voltage",
          "symbol": "VDD-GATE-ON",
          "kind": "electrical",
          "unit": "V",
          "min": 6.5,
          "typ": null,
          "max": 7.1,
          "conditions": "VDD > VDD-GATE-ON",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "SR Gate Disable Threshold Voltage",
          "symbol": "VDD-GATE-OFF",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": null,
          "max": 6,
          "conditions": "VDD < VDD-GATE-OFF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating Current",
          "symbol": "IDD-OP1",
          "kind": "electrical",
          "unit": "mA",
          "min": 8,
          "typ": null,
          "max": 10,
          "conditions": "fSW = 100 kHz, CGATE = 1 nF",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Comparator Input Offset Voltage",
          "symbol": "VOSI",
          "kind": "electrical",
          "unit": "mV",
          "min": -1,
          "typ": 0,
          "max": 1,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum Off-time",
          "symbol": "tOFF-MIN",
          "kind": "timing",
          "unit": "ns",
          "min": 1150,
          "typ": 1550,
          "max": 2800,
          "conditions": "From VD1/2 higher than VTH-HGH (ALFP group value)",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Turn-on Propagation Delay",
          "symbol": "tON-DLY",
          "kind": "timing",
          "unit": "ns",
          "min": 30,
          "typ": null,
          "max": 80,
          "conditions": "From VD1/2 = -0.2 to VGATE = 1 V, when DLY_EN = 0",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Turn-off Propagation Delay",
          "symbol": "tOFF-DLY",
          "kind": "timing",
          "unit": "ns",
          "min": 30,
          "typ": null,
          "max": 80,
          "conditions": "Turn-off comparator delay, From VD1/2 = 0.6 to VGATE = 5.7 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Minimum SR Conduction Time to Enable SR when DLY_EN = 0",
          "symbol": "tGATE-SKIP1",
          "kind": "timing",
          "unit": "ns",
          "min": 550,
          "typ": null,
          "max": 710,
          "conditions": "Duration from turn-on trigger to VD1/2 rising higher than VTH-HGH, when DLY_EN = 0",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Upper Limit of Minimum On-time when DLY_EN = 0",
          "symbol": "tMIN-ON-U1",
          "kind": "timing",
          "unit": "s",
          "min": 4,
          "typ": 5,
          "max": 6,
          "conditions": "200 ns < tMIN-ON < tMIN-ON-U1, DLY_EN = 0",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Upper Limit of Minimum On-time when DLY_EN = 1",
          "symbol": "tMIN-ON-U2",
          "kind": "timing",
          "unit": "s",
          "min": 2,
          "typ": 2.5,
          "max": 3,
          "conditions": "200 ns < tMIN-ON < tMIN-ON-U2, DLY_EN = 1",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Adaptive Minimum On Time Ratio when DLY_EN = 0",
          "symbol": "KTON1",
          "kind": "electrical",
          "unit": "%",
          "min": 29,
          "typ": 34,
          "max": 39,
          "conditions": "DLY_EN=0 & tSRCOND(n-1) = 8 s (ALFP/ALGP group)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Maximum SR Turn-on Time",
          "symbol": "tSR-MAX-ON",
          "kind": "timing",
          "unit": "s",
          "min": 21,
          "typ": 30,
          "max": 39,
          "conditions": "Variant ALFP (group with ALC, ALK, ALS, AHD, AHJ, BLC, ALGP)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Minimum Switching Frequency",
          "symbol": "fMIN",
          "kind": "electrical",
          "unit": "kHz",
          "min": 22,
          "typ": null,
          "max": null,
          "conditions": "1/(tSR-MAX-ON-CH1 + tSR-MAX-ON-CH2); variant ALFP group",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Maximum Adaptive Offset Current",
          "symbol": "IOFFSET",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 0,
          "max": null,
          "conditions": "VD1 = VD2 = 0; variant ALFP (IOFFSET stays at 0)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Threshold Voltage of Current Inversion Detection",
          "symbol": "VSD-PRI",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 150,
          "max": null,
          "conditions": "VGATE1/2 > 4.5 V with 200 ns delay & VD1/2 > VSD-PRI when DLY_EN = 0; 100 ns delay when DLY_EN = 1",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Debounce Time of SR Current Inversion Detection",
          "symbol": "tINV",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 170,
          "max": null,
          "conditions": "VGATE1/2 > 4.5 V & VD1/2 > VSRCINV for tINV",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Lower Band of Dead Time Regulation",
          "symbol": "tDEAD-LBAND",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 90,
          "max": null,
          "conditions": "From VGATE falling below VGATE-LOW (ALFP group value)",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Minimum Light Load Period for SR Gate Reset (Second Group)",
          "symbol": "tGRN2-ENT",
          "kind": "timing",
          "unit": "s",
          "min": 4.5,
          "typ": 6,
          "max": 7.5,
          "conditions": "When SRCOND1, 2 are both low for tGRN2-ENT, generate GREEN2 pulse",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Primary Shutdown Detection Window Time Ratio",
          "symbol": "KSD-PRI",
          "kind": "electrical",
          "unit": "%",
          "min": 65,
          "typ": 70,
          "max": 75,
          "conditions": "LLD = 0, tVG1(n-1) = 8 s, and K2ND-TOFF * tVG1(n-1) > tMIN-ON",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Drain Threshold Voltage to Trigger Abnormal VD Sensing Protection",
          "symbol": "VABN-VD",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.85,
          "max": null,
          "conditions": "VD1/2 > VABN-VD & VGATE1/2 > 4.5 V with 100 ns delay within KSD-PRI",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Over Temperature Protection Reducing VGATE",
          "symbol": "TOTP1",
          "kind": "electrical",
          "unit": "C",
          "min": null,
          "typ": 130,
          "max": null,
          "conditions": "TJ > TOTP1 & VGATE = 6.7 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Gate Clamping Voltage",
          "symbol": "VGATE-MAX",
          "kind": "electrical",
          "unit": "V",
          "min": 9,
          "typ": 10.5,
          "max": 12,
          "conditions": "12 V < VDD < 33 V, CGATE = 4.7 nF at TJ < TOTP1",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Adaptive Gate Control Enabling Switching Period",
          "symbol": "tHFS-EN",
          "kind": "timing",
          "unit": "s",
          "min": 4,
          "typ": null,
          "max": 5,
          "conditions": "Time from VGATE1(n-1) rising edge to VGATE1(n) rising edge at TJ < TOTP1 (ALFP group)",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Peak Sourcing Current of Gate Driver",
          "symbol": "ISOURCE",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Peak Sinking Current of Gate Driver",
          "symbol": "ISINK",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 4.5,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Gate Driver Sourcing Resistance",
          "symbol": "RDRV-SOURCE",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 8,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Gate Driver Sinking Resistance",
          "symbol": "RDRV-SINK",
          "kind": "electrical",
          "unit": "Ω",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Rise Time",
          "symbol": "tR",
          "kind": "timing",
          "unit": "ns",
          "min": 50,
          "typ": null,
          "max": 150,
          "conditions": "VDD = 12 V, CGATE = 3.3 nF, VGATE = 1 to 6 V at TJ = 25C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Fall Time",
          "symbol": "tF",
          "kind": "timing",
          "unit": "ns",
          "min": 30,
          "typ": null,
          "max": 50,
          "conditions": "VDD = 12 V, CGATE = 3.3 nF, VGATE = 6 to 1 V at TJ = 25C",
          "source_page": 8,
          "source": "datasheet"
        },
        {
          "name": "Start-up Current",
          "symbol": "IDD-START",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 100,
          "max": null,
          "conditions": "VDD = VDD-ON - 0.1 V",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating Current fSW = 100 kHz, CGATE = 0 nF",
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