ZLDO1117QG33TA

{
  "schema_version": 1,
  "type": "component",
  "slug": "zldo1117qg33ta",
  "title": "ZLDO1117QG33TA",
  "brief": "Diodes Incorporated Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "pmic",
    "zldo1117qg33ta"
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  "component": {
    "mpn": "ZLDO1117QG33TA",
    "manufacturer": "Diodes Incorporated",
    "package": "SOT-223",
    "pin_count": 3,
    "category": "PMIC",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.diodes.com/assets/Datasheets/ZLDO1117QG33TA.pdf",
    "parts": {
      "symbol": "zldo1117qg33ta.kicad_sym",
      "footprint": "zldo1117qg33ta.kicad_mod",
      "model_3d": "zldo1117qg33ta-etched.glb",
      "model_3d_plain": "zldo1117qg33ta.glb",
      "model_3d_step": "zldo1117qg33ta-etched.step",
      "model_3d_step_plain": "zldo1117qg33ta.step",
      "lbr": "zldo1117qg33ta.lbr"
    },
    "distributor_links": {
      "lcsc": "C326523"
    },
    "pins": [
      {
        "number": "1",
        "name": "ADJ/GND",
        "type": "power_in",
        "description": "Ground pin for the fixed-mode (3.3V) variant ZLDO1117QG33TA. In adjustable variants, a resistor divider from this pin to VOUT sets the output voltage; for the fixed 3.3V version this pin is tied to system ground."
      },
      {
        "number": "2",
        "name": "VOUT",
        "type": "power_out",
        "description": "Regulated 3.3V output (2% tolerance, up to 1A). A minimum 4.7uF capacitor (0.05Ω <= ESR <= 0.5Ω) must be connected from this pin to ground to ensure stability. A larger output capacitor is recommended for improved AC load response. Also connected to the exposed tab. Also the package tab: exposed metal tab electrically connected to VOUT. Used as the primary thermal path; solder to a copper heat-spreading pad on the PCB. Theta_JC = 16 °C/W and Theta_JA = 107 °C/W for SOT-223."
      },
      {
        "number": "3",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply pin (-0.03V to +18V absolute max; 2.7V to 18V recommended). Typically a large storage capacitor (0.05Ω <= ESR <= 0.5Ω) is connected from this pin to ground to keep the input from sagging below the minimum dropout voltage during load transients. VIN must remain at least 1.3V above VOUT (1.5V for correct operation) for the device to regulate properly."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.diodes.com/assets/Datasheets/ZLDO1117QG33TA.pdf",
        "pages": 14,
        "sha256": "52a05840bdb17cd6",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 4,
        "described": 4,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -3.15,
        -2.3
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOT-223-3_TabPin2@sha256:8ae5f03e2c16377a",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "zldo1117qg33ta.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "77ad6dbacc493cb619c728f26d2ddcf461eb0feb6b977b47d01d51e67016f654",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "zldo1117qg33ta-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.0,
          6.5,
          1.7
        ],
        "zmin_mm": -0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "b1bda20d56ea08575920e7afdb6560d44da7ae014ab7597866f418c30d44c40e",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Diodes Incorporated",
      "Package": "SOT-223",
      "Category": "PMIC",
      "Pins": "4"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "zldo1117qg33ta"
  ],
  "discovery_pitch": "ZLDO1117QG33TA (Diodes Incorporated) 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",
    "zldo1117qg33ta.kicad_sym",
    "zldo1117qg33ta.kicad_mod",
    "zldo1117qg33ta.glb",
    "zldo1117qg33ta.step",
    "zldo1117qg33ta-etched.step",
    "zldo1117qg33ta.lbr",
    "docs/hero.png",
    "docs/zldo1117qg33ta-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "ZLDO1117QG33TA",
      "kind": "packaging"
    },
    {
      "mpn": "ZLDO1117QK33TC",
      "kind": "unknown"
    }
  ],
  "updated_at": "2026-09-25T14:49:54.169Z"
}