NCP45492XMNTWG

{
  "schema_version": 1,
  "type": "component",
  "slug": "ncp45492xmntwg",
  "title": "NCP45492XMNTWG",
  "brief": "onsemi Supervisor And Reset ICs, QFN-32-EP(4x4). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
    "ncp45492xmntwg"
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  "component": {
    "mpn": "NCP45492XMNTWG",
    "manufacturer": "onsemi",
    "package": "QFN-32-EP(4x4)",
    "pin_count": 33,
    "category": "Power Management (PMIC)",
    "subcategory": "Supervisor And Reset ICs",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589988574877032448",
    "parts": {
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      "lbr": "ncp45492xmntwg.lbr"
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    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "SH_IN_N1",
        "type": "input",
        "description": "Channel 1 shunt resistor sense negative (high-voltage analog input, up to 26 V)."
      },
      {
        "number": "2",
        "name": "SH_IN_P1",
        "type": "input",
        "description": "Channel 1 shunt resistor sense positive (high-voltage analog input, up to 26 V)."
      },
      {
        "number": "3",
        "name": "BS_IN1",
        "type": "input",
        "description": "Channel 1 bus voltage sense, high-impedance input (0-26 V via external divider)."
      },
      {
        "number": "4",
        "name": "SH_IN_N2",
        "type": "input",
        "description": "Channel 2 shunt resistor sense negative (high-voltage analog input, up to 26 V)."
      },
      {
        "number": "5",
        "name": "SH_IN_P2",
        "type": "input",
        "description": "Channel 2 shunt resistor sense positive (high-voltage analog input, up to 26 V)."
      },
      {
        "number": "6",
        "name": "BS_IN2",
        "type": "input",
        "description": "Channel 2 bus voltage sense, high-impedance input (0-26 V via external divider)."
      },
      {
        "number": "7",
        "name": "SH_O2",
        "type": "output",
        "description": "Channel 2 shunt voltage gain-set / filter, current output (0-0.5 V op range, ISH_O_MAX = 5 mA)."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Pin must be floated."
      },
      {
        "number": "9",
        "name": "GND_FET",
        "type": "output",
        "description": "Low-side ground reference for external resistor dividers (open-drain FET switch; ~10 Ω ON, up to 26 V OFF)."
      },
      {
        "number": "10",
        "name": "SH_O3",
        "type": "output",
        "description": "Channel 3 shunt voltage gain-set / filter, current output (0-0.5 V op range, ISH_O_MAX = 5 mA)."
      },
      {
        "number": "11",
        "name": "BS_IN3",
        "type": "input",
        "description": "Channel 3 bus voltage sense, high-impedance input (0-26 V via external divider)."
      },
      {
        "number": "12",
        "name": "SH_IN_P3",
        "type": "input",
        "description": "Channel 3 shunt resistor sense positive (high-voltage analog input, up to 26 V)."
      },
      {
        "number": "13",
        "name": "SH_IN_N3",
        "type": "input",
        "description": "Channel 3 shunt resistor sense negative (high-voltage analog input, up to 26 V)."
      },
      {
        "number": "14",
        "name": "BS_IN4",
        "type": "input",
        "description": "Channel 4 bus voltage sense, high-impedance input (0-26 V via external divider)."
      },
      {
        "number": "15",
        "name": "SH_IN_P4",
        "type": "input",
        "description": "Channel 4 shunt resistor sense positive (high-voltage analog input, up to 26 V)."
      },
      {
        "number": "16",
        "name": "SH_IN_N4",
        "type": "input",
        "description": "Channel 4 shunt resistor sense negative (high-voltage analog input, up to 26 V)."
      },
      {
        "number": "17",
        "name": "SH_O4",
        "type": "output",
        "description": "Channel 4 shunt voltage gain-set / filter, current output (0-0.5 V op range, ISH_O_MAX = 5 mA)."
      },
      {
        "number": "18",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Pin must be floated."
      },
      {
        "number": "19",
        "name": "DIFF_OUT_N",
        "type": "output",
        "description": "Differential output, negative side. Drives external ADC; may be wire-OR'd with paired device (Hi-Z when not active). Full-scale output 800 mVpp; CLOAD up to 82 pF."
      },
      {
        "number": "20",
        "name": "DIFF_OUT_P",
        "type": "output",
        "description": "Differential output, positive side. Drives external ADC; may be wire-OR'd with paired device (Hi-Z when not active). Full-scale output 800 mVpp."
      },
      {
        "number": "21",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Pin must be floated."
      },
      {
        "number": "22",
        "name": "CM_REF_IN",
        "type": "input",
        "description": "Common-mode reference for differential output. Sets VCM (typ 565-885 mV) via external divider from BG_REF_OUT."
      },
      {
        "number": "23",
        "name": "BG_REF_OUT",
        "type": "output",
        "description": "Buffered bandgap voltage output (VBG typ 1.3 V, 1.274-1.326 V; source up to 100 μA). Supplies BS_REF and CM_REF_IN via external dividers."
      },
      {
        "number": "24",
        "name": "BS_REF",
        "type": "input",
        "description": "Bus OK reference input. Sets threshold for BS_INx valid detection; must be <0.2 V for BS_INx pins."
      },
      {
        "number": "25",
        "name": "SKIP",
        "type": "input",
        "description": "Skip function control input. Modifies BS_OK logic per SKIP-logic table; can also force BS_OK low in absence of VCC."
      },
      {
        "number": "26",
        "name": "MODE_SEL",
        "type": "input",
        "description": "Multi-level (LOW / Tri-state / HIGH) mode select input: LOW = Device A, floating = stand-alone, HIGH = Device B. Input impedance 100 kΩ (RFLOAT)."
      },
      {
        "number": "27",
        "name": "VCC",
        "type": "power_in",
        "description": "Device power supply, 2.8-3.8 V (abs max 5.5 V). IVCC_F ≤ 1.5 mA fully-functional, ≤400 μA limited, ≤180 μA standby."
      },
      {
        "number": "28",
        "name": "ENABLE",
        "type": "input",
        "description": "Device enable. LOW = fully functional, floating = limited function, HIGH = standby low-power state. Input impedance 100 kΩ."
      },
      {
        "number": "29",
        "name": "MUX_SEL",
        "type": "input",
        "description": "Multiplexer select digital input. Rising edges advance the readout channel sequence; period 0.185 μs to 11 μs in normal operation, ≥35 μs asserts reset."
      },
      {
        "number": "30",
        "name": "BS_OK",
        "type": "output",
        "description": "Bus-OK indication (open-drain output). High-impedance when all monitored bus voltages are valid; low (RBS_OK ≤ 300 Ω) otherwise. Requires external pull-up."
      },
      {
        "number": "31",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect. Pin must be floated."
      },
      {
        "number": "32",
        "name": "SH_O1",
        "type": "output",
        "description": "Channel 1 shunt voltage gain-set / filter, current output (0-0.5 V op range, ISH_O_MAX = 5 mA)."
      },
      {
        "number": "33",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground / exposed thermal pad. Must be connected to system ground (also serves as thermal path, RθJC = 5 °C/W)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589988574877032448",
        "pages": 13,
        "sha256": "a95726ed10ca911f",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 33,
        "described": 33,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "QFN-32-EP(4x4)",
      "Category": "Power Management (PMIC)",
      "Pins": "33"
    }
  },
  "variants": [
    {
      "mpn": "NCP45492XMNTWG",
      "kind": "packaging"
    }
  ],
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  "discovery_pitch": "NCP45492XMNTWG (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
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  "visibility": {
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  "updated_at": "2026-09-25T02:59:23.047Z"
}