RT8129AGQW

{
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  "type": "component",
  "slug": "rt8129agqw",
  "title": "RT8129AGQW",
  "brief": "Richtek Tech DC-DC Controllers, TDFN-10-EP(3x3). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
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    "power supply chip",
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  "component": {
    "mpn": "RT8129AGQW",
    "manufacturer": "Richtek Tech",
    "package": "TDFN-10-EP(3x3)",
    "pin_count": 11,
    "category": "Power Supply Chip",
    "subcategory": "DC-DC Controllers",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/fa71907551b14047d0435e715617c2f3.pdf",
    "parts": {
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    "distributor_links": {
      "lcsc": "C3249955"
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    "distributor_check": {
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      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "quota"
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      "mouser": {
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    },
    "pins": [
      {
        "number": "1",
        "name": "BOOT",
        "type": "power_in",
        "description": "Bootstrap supply for the high-side gate driver, connected to VCC through a bootstrap diode with a 0.1µF or greater ceramic capacitor to PHASE."
      },
      {
        "number": "2",
        "name": "PHASE",
        "type": "passive",
        "description": "Switch node connected to the high-side MOSFET source, low-side MOSFET drain and inductor, sensed for zero-current detection and over-current protection while the low-side MOSFET is on."
      },
      {
        "number": "3",
        "name": "UGATE",
        "type": "output",
        "description": "High-side MOSFET gate driver output, connected to the gate of the high-side MOSFET."
      },
      {
        "number": "4",
        "name": "LGATE/OCSET",
        "type": "bidirectional",
        "description": "Low-side MOSFET gate driver output that also sets the current limit threshold through a resistor (ROCSET) to GND."
      },
      {
        "number": "5",
        "name": "GND",
        "type": "power_in",
        "description": "Ground; pin 5 is tied to the exposed pad, which must be soldered to a large PCB ground area for maximum power dissipation."
      },
      {
        "number": "6",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply voltage input (4.5V to 13.2V recommended) that also powers the low-side gate driver, with a 4.7µF ceramic capacitor to GND recommended."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable control input: above 2V turns the controller on, below 0.8V turns it off, and it is pulled high internally if left open."
      },
      {
        "number": "8",
        "name": "FB",
        "type": "input",
        "description": "Output voltage feedback input, also monitored for power good, over-voltage and under-voltage protection, connected to the output through a resistor divider."
      },
      {
        "number": "9",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection."
      },
      {
        "number": "10",
        "name": "PGOOD",
        "type": "output",
        "description": "Open-drain power good output requiring a pull-up resistor, high when the output is in regulation, and may be left open if unused."
      },
      {
        "number": "11",
        "name": "GND",
        "type": "power_in",
        "description": "Exposed pad ground, to be soldered to a large PCB ground area for maximum power dissipation."
      }
    ],
    "provenance": {
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        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
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        "pages_sent": 18,
        "cost_usd": 0.1691,
        "at": "2026-10-22T22:24:02"
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        "pages": 18,
        "sha256": "18c827b01f6fdd16",
        "source_tier": "mfr"
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      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
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        "described": 11,
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        "refuses_to_fabricate": true
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  "metadata": {
    "specs": {
      "Manufacturer": "Richtek Tech",
      "Package": "TDFN-10-EP(3x3)",
      "Category": "Power Supply Chip",
      "Pins": "11"
    },
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          "name": "Internal Boot Charging Switch on Resistance",
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          "name": "Current Limit Threshold Offset",
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          "name": "Voltage Ramp Soft-Start Time",
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        {
          "name": "Thermal Shutdown Threshold",
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          "name": "Under-Voltage Until PGOOD Goes Low",
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          "name": "OVP latch delay",
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          "name": "Junction Temperature",
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          "name": "Storage Temperature Range",
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