RT9742GGJ5

{
  "schema_version": 1,
  "type": "component",
  "slug": "rt9742ggj5",
  "title": "RT9742GGJ5",
  "brief": "Richtek Tech AC-DC Controllers and Regulators, TSOT-23-5. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "rt9742ggj5"
  ],
  "component": {
    "mpn": "RT9742GGJ5",
    "manufacturer": "Richtek Tech",
    "package": "TSOT-23-5",
    "pin_count": 5,
    "category": "PMIC",
    "subcategory": "AC-DC Controllers and Regulators",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/6025a13cc7d564ddcde4f0ccd33bdf04.pdf",
    "parts": {
      "symbol": "rt9742ggj5.kicad_sym",
      "footprint": "rt9742ggj5.kicad_mod",
      "model_3d": "rt9742ggj5-etched.glb",
      "model_3d_plain": "rt9742ggj5.glb",
      "model_3d_step": "rt9742ggj5-etched.step",
      "model_3d_step_plain": "rt9742ggj5.step",
      "lbr": "rt9742ggj5.lbr"
    },
    "distributor_links": {
      "lcsc": "C250547"
    },
    "pins": [
      {
        "number": "1",
        "name": "VOUT",
        "type": "power_out",
        "description": "Switched power output. Delivers up to ~1A (typ. current-limit 1.4A for the G-current option) from VIN through the internal N-MOSFET high-side switch. Requires a 0.1uF ceramic COUT for stability; internal auto-discharge pulls VOUT to GND when the switch is disabled."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference for the bias, control logic and the source-referred protection circuitry."
      },
      {
        "number": "3",
        "name": "FLG",
        "type": "output",
        "description": "Active-low, open-drain fault flag. Pulled low after an over-current or over-temperature condition persists for approximately 10ms (deglitched). Requires an external pull-up resistor (typ. to VIN or a logic rail)."
      },
      {
        "number": "4",
        "name": "EN",
        "type": "input",
        "description": "Chip-enable input. For the RT9742G option this pin is ACTIVE HIGH: drive high (up to 6V) to turn the power switch on, drive low to turn it off. Absolute-max range -0.3V to 7V; no internal pull, so must be driven or externally biased."
      },
      {
        "number": "5",
        "name": "VIN",
        "type": "power_in",
        "description": "Power input, 2.7V to 6V recommended (7V abs-max). Source for the switched output and internal bias. Bypass with a 10uF ceramic CIN close to the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/6025a13cc7d564ddcde4f0ccd33bdf04.pdf",
        "pages": 19,
        "sha256": "ed44fd2fbcb11dc2",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 5,
        "described": 5,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -1.1375,
        -0.95
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-23-5@sha256:455a3f7c3e5eb5b8",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "rt9742ggj5.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "720a6eab0024069bbee68e7cb4c3ff1149468a34611225cdc852662c5d0ec2b7",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "rt9742ggj5-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "73be1aed2790a3b0d7017e346e829e37265b15ddb85b669c02f8984ea257e2c2",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Richtek Tech",
      "Package": "TSOT-23-5",
      "Category": "PMIC",
      "Pins": "5"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "rt9742ggj5"
  ],
  "discovery_pitch": "RT9742GGJ5 (Richtek Tech) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "rt9742ggj5.kicad_sym",
    "rt9742ggj5.kicad_mod",
    "rt9742ggj5.glb",
    "rt9742ggj5.step",
    "rt9742ggj5-etched.step",
    "rt9742ggj5.lbr",
    "docs/hero.png",
    "docs/rt9742ggj5-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "RT9742GGJ5",
      "kind": "packaging"
    },
    {
      "mpn": "RT9742GGJ5F",
      "kind": "packaging"
    },
    {
      "mpn": "RT9742GGJ5MGJ5",
      "kind": "packaging"
    },
    {
      "mpn": "RT9742GGJ5MNGJ5",
      "kind": "packaging"
    },
    {
      "mpn": "RT9742GGJ5UNGJ5",
      "kind": "packaging"
    },
    {
      "mpn": "RT9742GGJ5JNGV",
      "kind": "packaging"
    },
    {
      "mpn": "RT9742GGJ5KNGV",
      "kind": "packaging"
    },
    {
      "mpn": "RT9742GGJ5LNGV",
      "kind": "packaging"
    },
    {
      "mpn": "RT9742GGJ5SNGV",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T05:21:31.545Z"
}