LTC4211IS8#TRPBF

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  "slug": "ltc4211is8-trpbf",
  "title": "LTC4211IS8#TRPBF",
  "brief": "Analog Devices Surge Protection Devices (SPDs), SO-8. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
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    "circuit protection",
    "ltc4211is8#trpbf",
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  "component": {
    "mpn": "LTC4211IS8#TRPBF",
    "manufacturer": "Analog Devices",
    "package": "SO-8",
    "pin_count": 8,
    "category": "Circuit Protection",
    "subcategory": "Surge Protection Devices (SPDs)",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8589861377948495872",
    "parts": {
      "symbol": "ltc4211is8-trpbf.kicad_sym",
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      "lbr": "ltc4211is8-trpbf.lbr"
    },
    "distributor_links": {
      "lcsc": "C687416",
      "digikey": "161-LTC4211IS8#TRPBFTR-ND",
      "mouser": "584-LTC4211IS8#TRPBF"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T00:00:02Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "161-LTC4211IS8#TRPBFTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "584-LTC4211IS8#TRPBF",
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    },
    "pins": [
      {
        "number": "1",
        "name": "RESET",
        "type": "output",
        "description": "Open-drain output that pulls to GND when the FB voltage falls below the 1.236V threshold, requires an external pull-up resistor to VCC, and goes high impedance at the end of the second timing cycle after FB rises above threshold."
      },
      {
        "number": "2",
        "name": "ON",
        "type": "input",
        "description": "Active-high enable input: VON above 1.316V starts the first timing cycle (if no GATE overvoltage exists), while VON below 1.236V pulls GATE low through an internal 200µA sink, with 80mV hysteresis."
      },
      {
        "number": "3",
        "name": "TIMER",
        "type": "passive",
        "description": "A capacitor connected from this pin to GND sets the initial and second start-up timing cycles and the power-good delay, and the pin is rated -0.3V to 2V absolute maximum."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground connection, to be connected to the system's analog ground plane."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input to comparator COMP2 that monitors the output supply through an external resistive divider, pulling RESET low when VFB is below 1.236V, with an absolute maximum rating of -0.3V to 17V."
      },
      {
        "number": "6",
        "name": "GATE",
        "type": "output",
        "description": "High-side gate drive output for the external N-channel pass FET, with gate drive limited by internal charge pump and zener clamps (ΔVGATE minimum 10V for 4.75V ≤ VCC ≤ 12V)."
      },
      {
        "number": "7",
        "name": "SENSE",
        "type": "input",
        "description": "Circuit breaker sense input: with a sense resistor between VCC and SENSE, the slow comparator trips at 50mV for 20µs and the fast comparator trips at 150mV for 300ns, and tying VCC to SENSE disables the breaker."
      },
      {
        "number": "8",
        "name": "VCC",
        "type": "power_in",
        "description": "Positive supply input operating from 2.5V to 16.5V, with an internal undervoltage lockout that disables the device until VCC exceeds 2.3V."
      }
    ],
    "provenance": {
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        "guards": "pin_guards 0.1: passed",
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        "cost_usd": 0.0843,
        "at": "2026-10-20T23:57:05"
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      "pins": {
        "total": 8,
        "described": 8,
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  "metadata": {
    "specs": {
      "Manufacturer": "Analog Devices",
      "Package": "SO-8",
      "Category": "Circuit Protection",
      "Pins": "8"
    },
    "characteristics": {
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          "name": "VCC Supply Voltage Range",
          "symbol": "VCC",
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          "unit": "V",
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          "typ": null,
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          "name": "VCC Supply Current",
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          "name": "RESET, FAULT Leakage Current",
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          "max": 60,
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          "name": "GATE Pull-Up Current",
          "symbol": "IGATEUP",
          "kind": "electrical",
          "unit": "µA",
          "min": -12.5,
          "typ": -10,
          "max": -7.5,
          "conditions": "Charge Pump On, VGATE ≤ 0.2V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Normal GATE Pull-Down Current",
          "symbol": "IGATEDOWN",
          "kind": "electrical",
          "unit": "µA",
          "min": 130,
          "typ": 200,
          "max": 270,
          "conditions": "ON Low",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "External N-Channel Gate Drive",
          "symbol": "∆VGATE",
          "kind": "electrical",
          "unit": "V",
          "min": 2.5,
          "typ": null,
          "max": 8,
          "conditions": "VGATE – VCC (For VCC = 2.5V)",
          "source_page": 3,
          "source": "datasheet"
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          "name": "External N-Channel Gate Drive",
          "symbol": "∆VGATE",
          "kind": "electrical",
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          "min": 4.5,
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          "max": 8,
          "conditions": "VGATE – VCC (For VCC = 2.7V)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "External N-Channel Gate Drive",
          "symbol": "∆VGATE",
          "kind": "electrical",
          "unit": "V",
          "min": 5,
          "typ": null,
          "max": 10,
          "conditions": "VGATE – VCC (For VCC = 3.3V)",
          "source_page": 3,
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        },
        {
          "name": "External N-Channel Gate Drive",
          "symbol": "∆VGATE",
          "kind": "electrical",
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          "min": 10,
          "typ": null,
          "max": 16,
          "conditions": "VGATE – VCC (For VCC = 5V)",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "External N-Channel Gate Drive",
          "symbol": "∆VGATE",
          "kind": "electrical",
          "unit": "V",
          "min": 10,
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          "max": 18,
          "conditions": "VGATE – VCC (For VCC = 12V)",
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          "source": "datasheet"
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        {
          "name": "External N-Channel Gate Drive",
          "symbol": "∆VGATE",
          "kind": "electrical",
          "unit": "V",
          "min": 8,
          "typ": null,
          "max": 18,
          "conditions": "VGATE – VCC (For VCC = 15V)",
          "source_page": 3,
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        {
          "name": "GATE Overvoltage Lockout Threshold",
          "symbol": "VGATEOV",
          "kind": "electrical",
          "unit": "V",
          "min": 0.08,
          "typ": 0.2,
          "max": 0.3,
          "conditions": "",
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          "name": "FB Voltage Threshold",
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          "kind": "electrical",
          "unit": "V",
          "min": 1.223,
          "typ": 1.236,
          "max": 1.248,
          "conditions": "FB High to Low",
          "source_page": 3,
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        {
          "name": "FB Threshold Line Regulation",
          "symbol": "∆VFB",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 0.5,
          "max": 5,
          "conditions": "2.5V ≤ VCC ≤ 16.5V",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "ON Threshold High",
          "symbol": "VONHI",
          "kind": "electrical",
          "unit": "V",
          "min": 1.23,
          "typ": 1.316,
          "max": 1.39,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "ON Threshold Low",
          "symbol": "VONLO",
          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": 1.236,
          "max": 1.26,
          "conditions": "",
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          "source": "datasheet"
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        {
          "name": "TIMER Current",
          "symbol": "ITMR",
          "kind": "electrical",
          "unit": "µA",
          "min": -2.5,
          "typ": -2,
          "max": -1.5,
          "conditions": "Timer On, VTIMER = 1V",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "TIMER Threshold (TIMER Low to High)",
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          "kind": "electrical",
          "unit": "V",
          "min": 1.2,
          "typ": 1.236,
          "max": 1.26,
          "conditions": "TIMER Low to High",
          "source_page": 3,
          "source": "datasheet"
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        {
          "name": "TIMER Threshold (TIMER High to Low)",
          "symbol": "VTMR",
          "kind": "electrical",
          "unit": "V",
          "min": 0.15,
          "typ": 0.2,
          "max": 0.4,
          "conditions": "TIMER High to Low",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output Low Voltage RESET",
          "symbol": "VOLRESET",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.14,
          "max": 0.4,
          "conditions": "IRESET = 1.6mA",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "FAST COMP Trip to GATE Discharging",
          "symbol": "tFAULTFC",
          "kind": "electrical",
          "unit": "ns",
          "min": null,
          "typ": 300,
          "max": 700,
          "conditions": "VCB = 0mV to 200mV Step",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "SLOW COMP Trip to GATE Discharging (8-pin version or FILTER floating)",
          "symbol": "tFAULTSC",
          "kind": "electrical",
          "unit": "µs",
          "min": 10,
          "typ": 20,
          "max": 30,
          "conditions": "VCB = 0mV to 100mV Step, 8-Pin Version or FILTER Floating",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Circuit Breaker Reset Delay Time",
          "symbol": "tRESET",
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          "unit": "µs",
          "min": null,
          "typ": 150,
          "max": 250,
          "conditions": "ON Low to FAULT High",
          "source_page": 4,
          "source": "datasheet"
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          "name": "VCC Supply Voltage (absolute maximum)",
          "symbol": "VCC",
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          "unit": "V",
          "min": null,
          "typ": null,
          "max": 17,
          "conditions": "",
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        {
          "name": "Input Voltage FB, ON",
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          "typ": null,
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          "name": "Input Voltage SENSE",
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          "unit": "V",
          "min": -0.3,
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          "max": null,
          "conditions": "Maximum printed as VCC + 0.3V",
          "source_page": 2,
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          "name": "Input Voltage TIMER",
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          "name": "Output Voltage RESET (RESET, FAULT rating)",
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          "name": "Operating Temperature Range (LTC4211I)",
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          "name": "Storage Temperature Range",
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          "min": -65,
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          "conditions": "Soldering, 10 sec",
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        {
          "name": "Maximum Junction Temperature",
          "symbol": "TJMAX",
          "kind": "thermal",
          "unit": "°C",
          "min": null,
          "typ": null,
          "max": 125,
          "conditions": "8-Lead Plastic SO (S8 package)",
          "source_page": 2,
          "source": "datasheet"
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        {
          "name": "Thermal Resistance, Junction-to-Ambient",
          "symbol": "θJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 150,
          "max": null,
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          "source": "datasheet"
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