UC3869AG-S08-R

{
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  "type": "component",
  "slug": "uc3869ag-s08-r",
  "title": "UC3869AG-S08-R",
  "brief": "UTC Unisonic Tech AC-DC Controllers And Regulators, SOP-8. 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)",
    "uc3869ag-s08-r",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UC3869AG-S08-R",
    "manufacturer": "UTC Unisonic Tech",
    "package": "SOP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590230620644544512",
    "parts": {
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      "lbr": "uc3869ag-s08-r.lbr"
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    "distributor_links": {
      "lcsc": "C2848648"
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    "distributor_check": {
      "checked_at": "2026-10-18T15:55:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
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    },
    "pins": [
      {
        "number": "1",
        "name": "RT",
        "type": "input",
        "description": "Connected through an NTC resistor to ground for over-temperature shutdown; the RT pin sources about 100 µA (93 to 107 µA at VRT=0.9V) and OTP trips when the RT voltage falls below about 1.04 V (0.98 to 1.10 V)."
      },
      {
        "number": "2",
        "name": "FB",
        "type": "input",
        "description": "Feedback input whose voltage, together with the CS pin current-sense signal, sets the PWM duty cycle; the datasheet gives an open-loop voltage of 5.4 V and a PWM input gain of 3 V/V."
      },
      {
        "number": "3",
        "name": "CS",
        "type": "input",
        "description": "Current sense input for cycle-by-cycle current limiting, with a peak current flat threshold of 0.92 V and a valley threshold of 0.57 to 0.67 V, and 200 to 550 ns leading edge blanking."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference for the controller."
      },
      {
        "number": "5",
        "name": "GATE",
        "type": "output",
        "description": "Totem-pole gate driver output for the power MOSFET, with a typical output high level of 9 V and output low level of 1 V at 20 mA with VDD=15 V, and an internal 16 V clamp for gate protection."
      },
      {
        "number": "6",
        "name": "VDD",
        "type": "power_in",
        "description": "Power supply pin; the recommended supply range is 10 to 24 V, with a start threshold of 16 to 21 V, minimum operating voltage of 6 to 8 V, and a zener clamp of 32 to 36 V."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "No connection."
      },
      {
        "number": "8",
        "name": "HV",
        "type": "input",
        "description": "Connected to the line input or bulk capacitor through resistors for start-up; the high-voltage pin absolute maximum rating is -0.3 to 500 V and it supplies about 0.25 mA to charge VDD during power-on."
      }
    ],
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: The pin configuration drawing on page 3 is not available as text; pin numbers and names were taken f; Pin types for RT and HV are engineering judgments (set to input) because the datasheet does not clas; Some description limits come from the electrical characteristics table rather than the pin table, si"
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        "cost_usd": 0.0447,
        "at": "2026-10-18T15:53:37"
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  "metadata": {
    "specs": {
      "Manufacturer": "UTC Unisonic Tech",
      "Package": "SOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
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          "name": "Start Up Current (leakage into VDD)",
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          "unit": "μA",
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          "name": "Start Threshold Voltage",
          "symbol": "VTHD(ON)",
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          "name": "Min. Operating Voltage",
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          "name": "VCC Zener Clamp Voltage",
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          "name": "Over Voltage Protection Voltage",
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          "name": "Leading Edge Blanking Time",
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          "name": "Output Current of RT Pin",
          "symbol": "IRT",
          "kind": "electrical",
          "unit": "μA",
          "min": 93,
          "typ": 100,
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          "name": "Threshold Voltage for OTP",
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          "kind": "electrical",
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          "min": 0.98,
          "typ": 1.04,
          "max": 1.1,
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          "name": "HV Pin Supply Current",
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          "conditions": "VDD=2V, HV=100V",
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        {
          "name": "HV Pin Leakage Current After Startup",
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          "kind": "electrical",
          "unit": "μA",
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          "name": "VFB Open Loop Voltage",
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          "kind": "electrical",
          "unit": "V",
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        {
          "name": "PWM Input Gain",
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          "kind": "electrical",
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        {
          "name": "Burst-Mode Out FB Voltage",
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          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.5,
          "max": null,
          "conditions": "VSENSE =0",
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        {
          "name": "Burst-Mode Enter FB Voltage",
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          "unit": "V",
          "min": null,
          "typ": 1.35,
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        {
          "name": "FB Pin Short Circuit Current",
          "symbol": "IFB_Short",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 240,
          "max": null,
          "conditions": "Short FB Pin to GND and Measure Current",
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          "name": "OTP Threshold",
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          "unit": "°C",
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          "name": "Output Rising Time 1V~10V",
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          "max": null,
          "conditions": "CL=1000pF",
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