main
Ray Set visibility: public 8121554 7d ago
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{
  "schema_version": 1,
  "type": "component",
  "slug": "ry9121e",
  "title": "RY9121E",
  "brief": "RYCHIP DC-DC Converters, SOT-23-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power management (pmic)",
    "ry9121e",
    "factory-2.0.0",
    "extractor-text"
  ],
  "component": {
    "mpn": "RY9121E",
    "manufacturer": "RYCHIP",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756857023336062976",
    "parts": {
      "symbol": "ry9121e.kicad_sym",
      "footprint": "ry9121e.kicad_mod",
      "model_3d": "ry9121e-hero.glb",
      "model_3d_plain": "ry9121e-etched.glb",
      "model_3d_step": "ry9121e-etched.step",
      "model_3d_step_plain": "ry9121e.step",
      "lbr": "ry9121e.lbr"
    },
    "distributor_links": {
      "lcsc": "C22392164"
    },
    "distributor_check": {
      "checked_at": "2026-10-31T01:34:22Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "no match"
      },
      "mouser": {
        "pn": null,
        "status": "no match"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BS",
        "type": "power_out",
        "description": "Bootstrap pin: a capacitor must be connected between SW and BS to form the floating supply for the high-side switch driver; the datasheet's absolute maximum for BS is Vsw+5V."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin for the regulator, which the layout guidance says should be connected to a large copper area for heat removal."
      },
      {
        "number": "3",
        "name": "FB",
        "type": "input",
        "description": "Adjustable-version feedback input, connected to the center point of the external resistor divider; the reference is 0.585 V to 0.615 V (0.600 V typical) and the absolute maximum is -0.3 V to 6 V."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Enable input: drive to logic-high to enable the IC and to logic-low to disable it into micro-power shutdown mode (rising threshold 1.4 V, falling threshold 0.8 V)."
      },
      {
        "number": "5",
        "name": "IN",
        "type": "power_in",
        "description": "Power supply pin for the regulator, with an input voltage range of 4.5 V to 17 V and an absolute maximum of 18 V."
      },
      {
        "number": "6",
        "name": "SW",
        "type": "output",
        "description": "Switching node pin driving the inductor; the absolute maximum is -0.3 V to VIN+1.0 V (-5 V to VIN+2.0 V for 10 ns transients)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "primary_model": "claude-haiku-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Pin types are KiCad ERC classes assigned from the functional descriptions; the datasheet does not st; Pin 1 is named 'BS' in the pin table but the text refers to a 'BST' pin; the pinout uses the table n; Pin-description limits for IN, EN, FB and SW are taken from the electrical characteristics and absol"
        ],
        "pages_sent": 13,
        "cost_usd": 0.0791,
        "at": "2026-10-31T01:34:15"
      },
      "datasheet": {
        "url": "https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8756857023336062976",
        "pages": 13,
        "sha256": "6617e5be3de43393",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "ry9121e.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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          2.9,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ry9121e-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
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        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "c20a4dd4314f6ddfa67236add1280ce0e69b763ab457a2801132bca8190273dd",
        "checked": "2026-10-31",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "RYCHIP",
      "Package": "SOT-23-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "6617e5be3de433931d6f6b85489636406272fe9ef97f35db186bd9f8220e2dee",
      "rows": [
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          "name": "VIN voltage",
          "symbol": "VIN",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 18,
          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "EN voltage",
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          "typ": null,
          "max": 18,
          "conditions": "",
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          "source": "datasheet"
        },
        {
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          "typ": null,
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        },
        {
          "name": "SW voltage (10ns transient)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -5,
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          "max": null,
          "conditions": "10ns transient",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "BS voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "FB voltage",
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          "typ": null,
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          "conditions": "",
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        },
        {
          "name": "Operating junction temperature, TJ",
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          "unit": "°C",
          "min": -40,
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          "max": 150,
          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Storage temperature",
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          "min": -55,
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          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Lead Temperature (Soldering)",
          "symbol": "",
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          "typ": null,
          "max": 260,
          "conditions": "Soldering, 10sec.",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "°C",
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          "typ": null,
          "max": 125,
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          "source": "datasheet"
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        {
          "name": "Operating temperature range",
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        },
        {
          "name": "Input voltage",
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          "min": 4.5,
          "typ": null,
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          "conditions": "",
          "source_page": 3,
          "source": "datasheet"
        },
        {
          "name": "Output current",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "A",
          "min": 0,
          "typ": null,
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          "conditions": "",
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          "source": "datasheet"
        },
        {
          "name": "Input Voltage Range",
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          "min": 4.5,
          "typ": null,
          "max": 17,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Feedback Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.585,
          "typ": 0.6,
          "max": 0.615,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Supply Current (Quiescent)",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 0.6,
          "max": 0.8,
          "conditions": "VEN =3.0V",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Under-Voltage Lockout Wake up VIN Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 4.3,
          "typ": null,
          "max": 4.5,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Under-Voltage Lockout Shutdown VIN Voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.6,
          "typ": null,
          "max": 3.8,
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          "source": "datasheet"
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        {
          "name": "Supply Current (Shutdown)",
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          "unit": "uA",
          "min": null,
          "typ": 4,
          "max": null,
          "conditions": "VEN =0 or EN = GND",
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          "source": "datasheet"
        },
        {
          "name": "High-Side Switch On-Resistance",
          "symbol": "",
          "kind": "electrical",
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          "min": null,
          "typ": 110,
          "max": null,
          "conditions": "ISW=100mA",
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          "source": "datasheet"
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        {
          "name": "Low-Side Switch On-Resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 70,
          "max": null,
          "conditions": "ISW=-100mA",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Valley Switch Current Limit",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
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        },
        {
          "name": "Output Current",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": null,
          "typ": 2.1,
          "max": null,
          "conditions": "VOUT=5V with L=4.7uH",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Over Voltage Protection Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 18,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Switching Frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 1.2,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Maximum Duty Cycle",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": null,
          "typ": 94,
          "max": null,
          "conditions": "VFB=90%",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Minimum Off-Time",
          "symbol": "",
          "kind": "electrical",
          "unit": "nS",
          "min": null,
          "typ": 89,
          "max": null,
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          "source_page": 4,
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        },
        {
          "name": "EN Rising Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.4,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "EN Falling Threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 0.8,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Hysteresis VIN voltage",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 500,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Soft Start",
          "symbol": "",
          "kind": "electrical",
          "unit": "mS",
          "min": null,
          "typ": 1.5,
          "max": null,
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          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Thermal Hysteresis",
          "symbol": "",
          "kind": "electrical",
          "unit": "℃",
          "min": null,
          "typ": 30,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 105,
          "max": null,
          "conditions": "JESD 51-7, 4-layer JEDEC board",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 55,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board thermal resistance",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 17.5,
          "max": null,
          "conditions": "",
          "source_page": 4,
          "source": "datasheet"
        }
      ]
    }
  },
  "variants": [],
  "sections": [
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    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ry9121e"
  ],
  "discovery_pitch": "RY9121E (RYCHIP) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
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    "path": "docs/hero.png"
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    "ry9121e.step",
    "ry9121e.lbr",
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    "ry9121e-hero.glb",
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    "ry9121e-etched.glb"
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  "visibility": {
    "public": true
  }
}