NCS37020DTBR2G

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  "slug": "ncs37020dtbr2g",
  "title": "NCS37020DTBR2G",
  "brief": "onsemi Power Management - Specialized, TSSOP-14. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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  "component": {
    "mpn": "NCS37020DTBR2G",
    "manufacturer": "onsemi",
    "package": "TSSOP-14",
    "pin_count": 14,
    "category": "Power Management (PMIC)",
    "subcategory": "Power Management - Specialized",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589999232779657216",
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      "lbr": "ncs37020dtbr2g.lbr"
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    "distributor_links": {
      "lcsc": "C904570"
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    "pins": [
      {
        "number": "1",
        "name": "SCR Test",
        "type": "input",
        "description": "SCR test input for SCR functionality verification, receives pre-bias voltage at 3.3 V during test cycles and monitors anode voltage below 2.1 V for pass/fail detection."
      },
      {
        "number": "2",
        "name": "CTB",
        "type": "input",
        "description": "Differential current transformer bias voltage input biased at 1.65 V providing reference for CT sense amplifier with internal 3.3 V regulator."
      },
      {
        "number": "3",
        "name": "CTS",
        "type": "input",
        "description": "Differential current signal input from current transformer secondary with CTS-CTB absolute offset voltage range of ±300 μV."
      },
      {
        "number": "4",
        "name": "CTO",
        "type": "output",
        "description": "Differential current to voltage output from CT sense amplifier with dynamic VOS cancellation, output range −0.25 V to +0.25 V serving as input to analog filter and ADC."
      },
      {
        "number": "5",
        "name": "IDF",
        "type": "input",
        "description": "Differential low pass filter and ADC input accepting CTO amplifier output for ground fault detection with adjustable sensitivity via external RC filter."
      },
      {
        "number": "6",
        "name": "REF",
        "type": "output",
        "description": "3.3 V internal reference voltage output for external component biasing and filtering, requires 1 μF capacitor per recommended external components."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Electronics ground reference for all analog and digital circuitry and external components."
      },
      {
        "number": "8",
        "name": "Phase",
        "type": "input",
        "description": "Zero cross input for VAC frequency detection from mains AC line at 50 or 60 Hz with 1 μA internal pull-down current and maximum 400 μA sink current capability."
      },
      {
        "number": "9",
        "name": "SUP",
        "type": "power_in",
        "description": "Power supply input to 12 V shunt regulator clamped at 12−13 V, supplies bias for internal 3.3 V digital and analog regulators, requires 2.2 μF ceramic holding capacitor."
      },
      {
        "number": "10",
        "name": "AUX",
        "type": "power_in",
        "description": "Auxiliary power supply input for secondary bias supply option when half-wave bias configuration is not available."
      },
      {
        "number": "11",
        "name": "LED",
        "type": "output",
        "description": "End of life LED drive output at 3.0−3.6 V driving LED indicators during normal operation or end-of-life fault conditions with blink frequency 3.6−4.4 Hz during faults."
      },
      {
        "number": "12",
        "name": "TE",
        "type": "input",
        "description": "Test enable input for internal production testing only, must be connected to GND pin for normal circuit operation."
      },
      {
        "number": "13",
        "name": "Fault Test",
        "type": "output",
        "description": "Differential self-test output signal enabled during positive half-cycle of self-test cycle when verifying CT and bias circuitry functionality."
      },
      {
        "number": "14",
        "name": "SCR",
        "type": "output",
        "description": "SCR gate drive signal output at 3.0−3.6 V enabling SCR triode devices during fault conditions or self-test cycles, disabled during negative half-cycle in half-wave bias operation."
      }
    ],
    "provenance": {
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        "guards": "pin_guards 0.1: passed",
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        "pages_sent": 13,
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        "at": "2026-09-22T08:08:02"
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        "pages": 13,
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "described": 14,
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  "metadata": {
    "specs": {
      "Manufacturer": "onsemi",
      "Package": "TSSOP-14",
      "Category": "Power Management (PMIC)",
      "Pins": "14"
    }
  },
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  "discovery_pitch": "NCS37020DTBR2G (onsemi) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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  "updated_at": "2026-09-25T03:01:27.921Z"
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