LM74700

{
  "schema_version": 1,
  "type": "component",
  "slug": "lm74700",
  "title": "LM74700",
  "brief": "TI ideal-diode controller, SOT-23-6. Drives an external N-MOSFET for near-zero-drop reverse-polarity and ORing protection. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "power",
    "ideal-diode",
    "oring-controller",
    "reverse-polarity",
    "sot-23-6",
    "texas-instruments"
  ],
  "component": {
    "mpn": "LM74700",
    "manufacturer": "Texas Instruments",
    "package": "SOT-23-6",
    "pin_count": 6,
    "category": "Power Management",
    "subcategory": "Ideal diode controller",
    "datasheet": "https://www.ti.com/lit/ds/symlink/lm74700-q1.pdf",
    "parts": {
      "symbol": "lm74700.kicad_sym",
      "footprint": "lm74700.kicad_mod",
      "model_3d": "lm74700-etched.glb",
      "model_3d_plain": "lm74700.glb",
      "model_3d_step": "lm74700-etched.step",
      "model_3d_step_plain": "lm74700.step",
      "lbr": "lm74700.lbr"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "VCAP",
        "type": "power_out",
        "description": "Charge-pump output. Connect a 0.1 μF ceramic capacitor from VCAP to ANODE; this reservoir supplies the ~15 V above ANODE needed to enhance the external N-channel MOSFET gate."
      },
      {
        "number": "2",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference. Tie to system ground; controller withstands VANODE swings down to -65 V relative to GND."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Active-high enable input (VIL max 1.22 V, VIH min 1.06 V, hysteresis ~0.52 V). Drive high (or tie to ANODE) for always-on operation; pull low for ~1 μA shutdown. Absolute max 65 V; tolerates VANODE when VANODE ≤ 0 V."
      },
      {
        "number": "4",
        "name": "CATHODE",
        "type": "input",
        "description": "Sense input for the ideal-diode cathode. Connect to the drain of the external N-channel MOSFET (system output rail). Recommended operating range -60 V to 60 V; ANODE-to-CATHODE regulated at 20 mV in forward conduction."
      },
      {
        "number": "5",
        "name": "GATE",
        "type": "output",
        "description": "Gate-drive output for the external N-channel MOSFET. Sources ~11 mA peak to enhance the FET and sinks up to 2.37 A peak (2.3 A typical) during a reverse-current event for fast (<0.75 μs) turn-off. GATE-to-ANODE clamped ≤15 V."
      },
      {
        "number": "6",
        "name": "ANODE",
        "type": "power_in",
        "description": "Input power and ideal-diode anode. Connect to the source of the external N-channel MOSFET (battery/input rail). 3.2 V to 65 V operating; POR rising ~3.9 V; requires a 22 nF (min) capacitor to GND at the pin."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/lm74700-q1.pdf",
        "pages": 36,
        "sha256": "e16b3a8c0023201f",
        "source_tier": "mfr"
      },
      "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": "lm74700.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": "c9fe686b4d1b56927a41fa84a9bc1efb61d8a45a123a3db43bcaa05c2891d635",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "lm74700-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": "6593bc32adf2eb1c98980af9b5e14573e1ebee5138826f43ee4441a925778c21",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Type": "Ideal-diode / ORing controller",
      "Drives": "External N-channel MOSFET",
      "Input": "3.2-65 V",
      "Forward drop": "Set by FET RDS(on) (millivolts)",
      "Turn-off": "~0.6 us on reverse current",
      "Enable": "EN pin",
      "Package": "SOT-23-6"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "lm74700",
    "ideal diode controller",
    "oring controller",
    "reverse polarity protection"
  ],
  "discovery_pitch": "TI LM74700 ideal-diode controller (SOT-23-6) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "lm74700.kicad_sym",
    "lm74700.kicad_mod",
    "lm74700.glb",
    "lm74700.step",
    "lm74700.lbr",
    "docs/hero.png",
    "docs/lm74700-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "lm74700-etched.step"
  ],
  "variants": [
    {
      "mpn": "LM74700QDBVR (SOT-23-6)",
      "kind": "packaging"
    },
    {
      "mpn": "LM74700-Q1 (automotive)",
      "kind": "packaging"
    }
  ]
}