RY3831

{
  "schema_version": 1,
  "type": "component",
  "slug": "ry3831",
  "title": "RY3831",
  "brief": "RYCHIP DC-DC Converters, ESOP-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "ry3831"
  ],
  "component": {
    "mpn": "RY3831",
    "manufacturer": "RYCHIP",
    "package": "ESOP-8",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/a0837091269769ac1c92a36f0ff61a69.pdf",
    "parts": {
      "symbol": "ry3831.kicad_sym",
      "footprint": "ry3831.kicad_mod",
      "model_3d": "ry3831-etched.glb",
      "model_3d_plain": "ry3831.glb",
      "model_3d_step": "ry3831-etched.step",
      "model_3d_step_plain": "ry3831.step",
      "lbr": "ry3831.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "BST",
        "type": "passive",
        "description": "Bootstrap pin. A capacitor connected between SW and BST forms a floating supply that powers the high-side MOSFET gate driver."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Power supply input pin. Accepts 4V to 18V (absolute max 21V). Bypass close to the pin with a ceramic input capacitor."
      },
      {
        "number": "3",
        "name": "SW",
        "type": "power_out",
        "description": "Switching node. Connects the internal high-side and low-side MOSFETs to the external inductor. Voltage swings between GND and VIN at 500kHz."
      },
      {
        "number": "4",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin. Tie to the exposed pad and to a large copper area for thermal dissipation."
      },
      {
        "number": "5",
        "name": "FB",
        "type": "input",
        "description": "Feedback input for the adjustable output. Connect to the center tap of an external resistor divider from VOUT to GND. Regulated to VFB = 0.923V typical (0.905V - 0.940V)."
      },
      {
        "number": "6",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to GND per PCB layout convenience."
      },
      {
        "number": "7",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Drive logic-high to enable the regulator; drive logic-low to disable and enter micro-power shutdown. Absolute max 21V."
      },
      {
        "number": "8",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave floating or tie to GND per PCB layout convenience."
      },
      {
        "number": "9",
        "name": "EPAD",
        "type": "power_in",
        "description": "Exposed thermal pad on the package bottom. Electrically GND. Must be soldered to a large ground copper pour for heat dissipation and to meet the 50°C/W θJA rating."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/a0837091269769ac1c92a36f0ff61a69.pdf",
        "pages": 7,
        "sha256": "1febf33afacecd6b",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ry3831.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.55
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ry3831-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6.0,
          4.9,
          1.55
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "39f051a9fe275e97bde082fe387daae9f3baa14d77f1861cb75bd614f26a51c8",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "RYCHIP",
      "Package": "ESOP-8",
      "Category": "PMIC",
      "Pins": "9"
    }
  },
  "variants": [],
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ry3831"
  ],
  "discovery_pitch": "RY3831 (RYCHIP) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ry3831.kicad_sym",
    "ry3831.kicad_mod",
    "ry3831.glb",
    "ry3831.step",
    "ry3831.lbr",
    "docs/hero.png",
    "docs/ry3831-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "updated_at": "2026-09-25T05:25:01.455Z"
}