SDH8303

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  "slug": "sdh8303",
  "title": "SDH8303",
  "brief": "Hangzhou Silan Microelectronics AC-DC Controllers And Regulators, DIP-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": [
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    "power management (pmic)",
    "sdh8303",
    "factory-2.0.0",
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  "component": {
    "mpn": "SDH8303",
    "manufacturer": "Hangzhou Silan Microelectronics",
    "package": "DIP-8",
    "pin_count": 8,
    "category": "Power Management (PMIC)",
    "subcategory": "AC-DC Controllers And Regulators",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588889781472268288",
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      "lbr": "sdh8303.lbr"
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    "distributor_links": {
      "lcsc": "C161191"
    },
    "distributor_check": {
      "checked_at": "2026-10-19T05:01:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
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    },
    "pins": [
      {
        "number": "1",
        "name": "SOURCE",
        "type": "power_in",
        "description": "Source of the internal power MOSFET and the reference ground for the control circuit; the datasheet gives no separate voltage limit for this pin."
      },
      {
        "number": "2",
        "name": "SOURCE",
        "type": "power_in",
        "description": "Source of the internal power MOSFET and the reference ground for the control circuit (pin 2 is internally tied to pin 1 in the package), with no separate voltage limit stated."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Feedback input: the FB current sets the light-load burst mode (shutdown at 0.85 mA, restart after a 70 µA drop), frequency foldback between 625 µA and 695 µA, and overload/short-circuit detection below 450 µA; absolute maximum feedback current is 3 mA."
      },
      {
        "number": "4",
        "name": "VDD",
        "type": "power_in",
        "description": "Supply pin for the control circuit: operating range 10 V to 25 V after start-up, start-up at 14.3 V, undervoltage lockout at 8.9 V, overvoltage protection at 28 V, clamp at 30 V, and absolute maximum VDD of 30 V."
      },
      {
        "number": "5",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection; the datasheet specifies this pin as floating (悬空)."
      },
      {
        "number": "6",
        "name": "DRAIN",
        "type": "passive",
        "description": "Drain of the internal high-voltage power MOSFET and high-voltage start-up input; drain-source breakdown is 650 V minimum, continuous drain current 1 A at Tamb = 25 °C, and pulsed drain current 6 A."
      },
      {
        "number": "7",
        "name": "DRAIN",
        "type": "passive",
        "description": "Drain of the internal high-voltage power MOSFET and high-voltage start-up input; drain-source breakdown is 650 V minimum, continuous drain current 1 A at Tamb = 25 °C, and pulsed drain current 6 A."
      },
      {
        "number": "8",
        "name": "DRAIN",
        "type": "passive",
        "description": "Drain of the internal high-voltage power MOSFET and high-voltage start-up input; drain-source breakdown is 650 V minimum, continuous drain current 1 A at Tamb = 25 °C, and pulsed drain current 6 A."
      }
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  "metadata": {
    "specs": {
      "Manufacturer": "Hangzhou Silan Microelectronics",
      "Package": "DIP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "8"
    },
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        {
          "name": "Operating ambient temperature range",
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          "unit": "°C",
          "min": -20,
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          "max": 85,
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        {
          "name": "Storage temperature range",
          "symbol": "TSTG",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -55,
          "typ": null,
          "max": 150,
          "conditions": "",
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        {
          "name": "Drain-source breakdown voltage",
          "symbol": "BVDSS",
          "kind": "electrical",
          "unit": "V",
          "min": 650,
          "typ": null,
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          "conditions": "VGS=0V, ID=50µA",
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          "max": 50,
          "conditions": "VDS=650V, VGS=0V",
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          "conditions": "VDS=480V, VGS=0V, Tamb=125°C",
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          "name": "Static drain-source on-resistance",
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          "conditions": "After start-up",
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        {
          "name": "VDD under-voltage protection point",
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        {
          "name": "VDD start/under-voltage hysteresis",
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        },
        {
          "name": "Normal operating switching frequency",
          "symbol": "fSW1",
          "kind": "electrical",
          "unit": "KHz",
          "min": 54,
          "typ": 60,
          "max": 66,
          "conditions": "IFB=0.5mA",
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        {
          "name": "Frequency jitter range",
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          "min": -2,
          "typ": null,
          "max": 2,
          "conditions": "IFB=0.5mA",
          "source_page": 3,
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        },
        {
          "name": "Maximum duty cycle",
          "symbol": "DMAX",
          "kind": "electrical",
          "unit": "%",
          "min": 75,
          "typ": 80,
          "max": 85,
          "conditions": "IFB=0.5mA",
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        {
          "name": "FB shutdown current",
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          "kind": "electrical",
          "unit": "mA",
          "min": 0.74,
          "typ": 0.85,
          "max": 1,
          "conditions": "",
          "source_page": 4,
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        {
          "name": "Peak current limit point",
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          "kind": "electrical",
          "unit": "mA",
          "min": 600,
          "typ": 700,
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          "conditions": "IFB=0mA",
          "source_page": 4,
          "source": "datasheet"
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          "name": "Thermal resistance, junction-to-ambient",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 70,
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          "conditions": "",
          "source_page": 2,
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        {
          "name": "Thermal resistance, junction-to-case (surface)",
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          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
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  "author": {
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    "email": "[email protected]"
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