CS3818EO

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  "slug": "cs3818eo",
  "version": "0.1.0",
  "type": "component",
  "description": "CRMICRO Audio Amplifiers, HTSSOP-28. Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.",
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  "component": {
    "mpn": "CS3818EO",
    "manufacturer": "CRMICRO",
    "package": "HTSSOP-28",
    "pin_count": 28,
    "category": "Amplifiers/Comparators",
    "subcategory": "Audio Amplifiers",
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    "distributor_links": {
      "lcsc": "C7421630"
    },
    "distributor_check": {
      "checked_at": "2026-10-21T22:48:34Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
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    },
    "pins": [
      {
        "number": "1",
        "name": "/SD",
        "type": "input",
        "description": "Standby logic input with TTL levels up to AVCC; it must be held high during normal operation, pulling it low shuts the outputs off, and it must not be left floating."
      },
      {
        "number": "2",
        "name": "/FAULT",
        "type": "output",
        "description": "Open-drain fault output that goes low on a short-circuit or DC-detect fault and is pulled up toward AVCC (VOL max 0.8 V with 100 kΩ pull-up at VCC=18 V); tying it to /SD gives automatic recovery, otherwise the fault latches until PVCC is reset."
      },
      {
        "number": "3",
        "name": "LINP",
        "type": "input",
        "description": "Left-channel positive audio input."
      },
      {
        "number": "4",
        "name": "LINN",
        "type": "input",
        "description": "Left-channel negative audio input."
      },
      {
        "number": "5",
        "name": "GAIN0",
        "type": "input",
        "description": "Gain-select low bit with TTL logic levels up to AVCC, together with GAIN1 it selects one of four gain settings (20, 26, 32 or 36 dB)."
      },
      {
        "number": "6",
        "name": "GAIN1",
        "type": "input",
        "description": "Gain-select high bit with TTL logic levels up to AVCC, together with GAIN0 it selects one of four gain settings (20, 26, 32 or 36 dB)."
      },
      {
        "number": "7",
        "name": "AVCC",
        "type": "power_in",
        "description": "Analog supply, rated 6.5 V to 26 V (absolute maximum 30 V) and also the logic reference for the TTL inputs."
      },
      {
        "number": "8",
        "name": "AGND",
        "type": "power_in",
        "description": "Analog ground, which the datasheet specifies is connected to the heat sink."
      },
      {
        "number": "9",
        "name": "GVDD",
        "type": "power_out",
        "description": "High-side gate-drive supply output (5.0 V to 6.8 V, 6.2 V typical at 100 µA load) that also powers the PLIMIT divider."
      },
      {
        "number": "10",
        "name": "PLIMIT",
        "type": "input",
        "description": "Power-limit level set by a resistor divider from GVDD to GND (input range -0.3 V to GVDD+0.3 V); connecting it directly to GVDD disables power limiting."
      },
      {
        "number": "11",
        "name": "RINN",
        "type": "input",
        "description": "Right-channel negative audio input, limited to -0.3 V to 5.3 V."
      },
      {
        "number": "12",
        "name": "RINP",
        "type": "input",
        "description": "Right-channel positive audio input, limited to -0.3 V to 5.3 V."
      },
      {
        "number": "13",
        "name": "MUTE",
        "type": "input",
        "description": "Mute logic input with TTL levels up to AVCC; a high level mutes the amplifier, while low or floating allows normal operation."
      },
      {
        "number": "14",
        "name": "PBTL",
        "type": "input",
        "description": "Parallel-BTL (mono) mode select; tie high for parallel BTL operation with the input on the right channel and the load across the left and right outputs, or tie to ground for normal BTL."
      },
      {
        "number": "15",
        "name": "PVCCR",
        "type": "power_in",
        "description": "Right-channel power supply input, internally connected to the left-channel supply, with a 26 V maximum rating."
      },
      {
        "number": "16",
        "name": "PVCCR",
        "type": "power_in",
        "description": "Right-channel power supply input, internally connected to the left-channel supply, with a 26 V maximum rating."
      },
      {
        "number": "17",
        "name": "BSPR",
        "type": "input",
        "description": "Bootstrap pin for the right positive high-side output driver."
      },
      {
        "number": "18",
        "name": "OUTPR",
        "type": "output",
        "description": "Right positive speaker output."
      },
      {
        "number": "19",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "20",
        "name": "OUTNR",
        "type": "output",
        "description": "Right negative speaker output."
      },
      {
        "number": "21",
        "name": "BSNR",
        "type": "input",
        "description": "Bootstrap pin for the right negative high-side output driver."
      },
      {
        "number": "22",
        "name": "BSNL",
        "type": "input",
        "description": "Bootstrap pin for the left negative high-side output driver."
      },
      {
        "number": "23",
        "name": "OUTNL",
        "type": "output",
        "description": "Left negative speaker output."
      },
      {
        "number": "24",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground."
      },
      {
        "number": "25",
        "name": "OUTPL",
        "type": "output",
        "description": "Left positive speaker output."
      },
      {
        "number": "26",
        "name": "BSPL",
        "type": "input",
        "description": "Bootstrap pin for the left positive high-side output driver."
      },
      {
        "number": "27",
        "name": "PVCCL",
        "type": "power_in",
        "description": "Left-channel power supply input, internally connected to the right-channel supply, with a 26 V maximum rating."
      },
      {
        "number": "28",
        "name": "PVCCL",
        "type": "power_in",
        "description": "Left-channel power supply input, internally connected to the right-channel supply, with a 26 V maximum rating."
      }
    ],
    "provenance": {
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      "cad": "KiCad official (CC-BY-SA 4.0)",
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        "total": 28,
        "described": 28,
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        "refuses_to_fabricate": true
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