UCC27517

{
  "schema_version": 1,
  "type": "component",
  "slug": "ucc27517",
  "title": "UCC27517",
  "brief": "TI single-channel low-side gate driver, SOT-23-5. +/-4 A peak, 4.5-18 V, dual inputs. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "gate-driver",
    "mosfet-driver",
    "low-side",
    "sot-23-5",
    "texas-instruments"
  ],
  "component": {
    "mpn": "UCC27517",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-5",
    "pin_count": 5,
    "category": "Driver",
    "subcategory": "Low-side gate driver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/ucc27517.pdf",
    "parts": {
      "symbol": "ucc27517.kicad_sym",
      "footprint": "ucc27517.kicad_mod",
      "model_3d": "ucc27517-etched.glb",
      "model_3d_plain": "ucc27517.glb",
      "lbr": "ucc27517.lbr",
      "model_3d_step": "ucc27517-etched.step",
      "model_3d_step_plain": "ucc27517.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VDD",
        "type": "power_in",
        "description": "Bias supply input. Recommended operating range 4.5 V to 18 V (12 V nominal). Bypass to GND with a low-ESR capacitor (e.g., 1 µF) placed close to the device. Internal UVLO holds OUT low outside the VDD operating range."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Ground return. All device signals are referenced to this pin. Provide a low-inductance path back to the source of the driven power MOSFET."
      },
      {
        "number": "3",
        "name": "IN+",
        "type": "input",
        "description": "Noninverting driver input. When used in inverting configuration, tie IN+ to VDD to enable the output; OUT is held LOW if IN+ is unbiased or floating. TTL/CMOS-compatible thresholds (V_IH typ 2.2 V, V_IL typ 1.2 V) independent of VDD, with ~1 V hysteresis. Absolute max on input pins is 20 V, not restricted by VDD."
      },
      {
        "number": "4",
        "name": "IN-",
        "type": "input",
        "description": "Inverting driver input. When used in noninverting configuration, tie IN- to GND to enable the output; OUT is held LOW if IN- is unbiased or floating. Shares the same TTL/CMOS-compatible thresholds and hysteresis as IN+. May be used as an enable/disable pin when the driver is configured single-input."
      },
      {
        "number": "5",
        "name": "OUT",
        "type": "output",
        "description": "Gate-drive sourcing/sinking current output. Symmetrical ±4-A peak drive into a capacitive load (rail-to-rail). Typical R_OH ≈ 5 Ω (P-channel pullup) and R_OL ≈ 0.5 Ω (pulldown) at VDD = 12 V. Held LOW during VDD UVLO to guarantee glitch-free power-up/down."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/ucc27517.pdf",
        "pages": 37,
        "sha256": "6b7b8c088746010d",
        "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"
    },
    "models_3d": [
      {
        "file": "ucc27517.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": "ucc27517-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          2.8,
          2.9,
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        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "671c0f1c3d5505e0acaaeeac3beb07fc991503653b0c40aa08b2fdef768b04ab",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Single-channel low-side gate driver",
      "Peak drive": "+/-4 A (symmetrical, rail-to-rail)",
      "Bias voltage (VDD)": "4.5-18 V",
      "Inputs": "IN+ / IN- (TTL/CMOS, VDD-independent thresholds)",
      "Pull-up / pull-down": "ROH ~5 ohm / ROL ~0.5 ohm @ 12 V",
      "Protection": "UVLO holds OUT low",
      "Package": "SOT-23-5",
      "Body (L×W×H)": "2.9 × 1.6 × 1.1 mm"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "ucc27517",
    "gate driver",
    "mosfet gate driver",
    "low-side driver 4a"
  ],
  "discovery_pitch": "TI UCC27517 single-channel high-speed low-side gate driver (SOT-23-5) with datasheet-verified pinout, Adom-authored symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "docs/hero.png",
    "docs/ucc27517-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ucc27517-etched.step"
  ],
  "variants": [
    {
      "mpn": "UCC27517DBVR (SOT-23-5, tape & reel)",
      "kind": "packaging"
    }
  ]
}