MD8933ESF4

{
  "schema_version": 1,
  "type": "component",
  "slug": "md8933esf4",
  "title": "MD8933ESF4",
  "brief": "Shanghai Mingda Microelectronics DC-DC Converters, ESOP-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)",
    "md8933esf4",
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  "component": {
    "mpn": "MD8933ESF4",
    "manufacturer": "Shanghai Mingda Microelectronics",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/41ada8ef90c17ba2c18fc411b2995649.pdf",
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      "lbr": "md8933esf4.lbr"
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    "distributor_links": {
      "lcsc": "C5155877"
    },
    "distributor_check": {
      "checked_at": "2026-10-28T00:29:14Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
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      "mouser": {
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    },
    "pins": [
      {
        "number": "1",
        "name": "BOOT",
        "type": "output",
        "description": "A 0.1μF bootstrap capacitor is required between the BOOT and PH pins, and if its voltage falls below the minimum requirement the high-side MOSFET is forced off until the capacitor is refreshed."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "This pin is the 3.5V to 28V input supply voltage."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable pin: pull below 0.5V to disable and float to enable, with programming the input undervoltage lockout using two resistors recommended."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "input",
        "description": "Slow-start pin, where an external capacitor connected to this pin sets the output rise time."
      },
      {
        "number": "5",
        "name": "VSENSE",
        "type": "input",
        "description": "This pin is the inverting node of the transconductance (gm) error amplifier."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Error-amplifier output and input to the PWM comparator, with frequency compensation components connected to this pin."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin, which must be connected to the exposed PowerPAD on the ESOP8 package for proper operation."
      },
      {
        "number": "8",
        "name": "PH",
        "type": "output",
        "description": "The PH pin is the source of the internal high-side power MOSFET."
      },
      {
        "number": "9",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
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        "pages": 26,
        "sha256": "08733d3b925067d8",
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Manufacturer": "Shanghai Mingda Microelectronics",
      "Package": "ESOP-8",
      "Category": "Power Management (PMIC)",
      "Pins": "9"
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    "characteristics": {
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          "name": "On resistance high-side MOSFET",
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          "name": "Error amplifier unity gain bandwidth",
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          "name": "Pulse skipping Eco-mode switch current threshold",
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          "name": "SS charge current",
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