TPS73718DCQR

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  "type": "component",
  "slug": "tps73718dcqr",
  "title": "TPS73718DCQR",
  "brief": "Texas Instruments Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223-6. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
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    "power management (pmic)",
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  "component": {
    "mpn": "TPS73718DCQR",
    "manufacturer": "Texas Instruments",
    "package": "SOT-223-6",
    "pin_count": 6,
    "category": "Power Management (PMIC)",
    "subcategory": "Voltage Regulators - Linear, Low Drop Out (LDO) Regulators",
    "datasheet": "https://www.ti.com/cn/lit/gpn/tps737",
    "parts": {
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      "lbr": "tps73718dcqr.lbr"
    },
    "distributor_links": {
      "lcsc": "C2863720",
      "digikey": "296-22889-2-ND",
      "mouser": "595-TPS73718DCQR"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T11:01:36Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-22889-2-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-TPS73718DCQR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "IN",
        "type": "power_in",
        "description": "Unregulated input supply, which must be within 2.2 V to 5.5 V (absolute maximum -0.3 V to 6 V) for the regulator to operate."
      },
      {
        "number": "2",
        "name": "OUT",
        "type": "power_out",
        "description": "Regulator output, which requires a capacitor of 1.0 µF or larger of any type for stability."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground connection that must be tied to the ground plane, with bypass capacitor grounds connected directly to this pin."
      },
      {
        "number": "4",
        "name": "NR/FB",
        "type": "passive",
        "description": "On the fixed-voltage version (TPS73718) this pin is NR, where an external capacitor from NR to ground bypasses the internal bandgap noise and lowers output noise; the FB function applies only to the adjustable version."
      },
      {
        "number": "5",
        "name": "EN",
        "type": "input",
        "description": "Enable input where driving above 1.7 V turns the regulator on and driving below 0.5 V places it in shutdown, and it must not be left floating (it may be tied to IN if shutdown is not needed)."
      },
      {
        "number": "6",
        "name": "GND",
        "type": "power_in",
        "description": "Ground pin in the SOT-223 package that is internally tied with pin 3, and the package tab is also GND and must be connected to ground."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
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        "factory": "2.0.0",
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        "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 4 is labeled NR/FB. TPS73718 is a fixed-voltage (1.8 V) version, so pin 4 is the NR noise-bypass; The datasheet lists GND on pins 3 and 6 for SOT-223 and the figure notes the tab is GND. The tab is ; The datasheet states EN must not be left floating; pin 5 is an input with the 1.7 V / 0.5 V threshol"
        ],
        "pages_sent": 25,
        "cost_usd": 0.1251,
        "at": "2026-10-11T11:01:23"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/tps737",
        "pages": 50,
        "sha256": "c0519949d941865c",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 6,
        "described": 6,
        "cites_pages": true,
        "refuses_to_fabricate": true
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        "extents_mm": [
          8.475,
          6.7,
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        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "bf43e0f52215e5c8b069c660d1a580928edb1037d7f7155d98bb6d1df79e64ff",
        "checked": "2026-10-11",
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        "sha256": "ed4bcddd124307cb9a04812c3a3ed1673b8424d632299e0e00848bcfebdf7e8f",
        "checked": "2026-10-16",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
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  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOT-223-6",
      "Category": "Power Management (PMIC)",
      "Pins": "6"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
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      "rows": [
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          "name": "Input voltage range",
          "symbol": "VIN",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 2.2,
          "typ": null,
          "max": 5.5,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Internal reference (DCQ package)",
          "symbol": "VFB",
          "kind": "electrical",
          "unit": "V",
          "min": 1.198,
          "typ": 1.204,
          "max": 1.21,
          "conditions": "TJ = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Initial accuracy",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1,
          "typ": null,
          "max": 1,
          "conditions": "Nominal value, TJ = 25°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output accuracy over line, load and temperature (new device)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -1.5,
          "typ": 0.5,
          "max": 1.5,
          "conditions": "VOUT + 0.5V ≤ VIN ≤ 5.5V; 10mA ≤ IOUT ≤ 1A; new device; TJ = -40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output accuracy over line, load and temperature (legacy device)",
          "symbol": "",
          "kind": "tolerance",
          "unit": "%",
          "min": -3,
          "typ": 0.5,
          "max": 3,
          "conditions": "VOUT + 0.5V ≤ VIN ≤ 5.5V; 10mA ≤ IOUT ≤ 1A; legacy device; TJ = -40°C to 125°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage (legacy device)",
          "symbol": "VDO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 130,
          "max": 500,
          "conditions": "VIN = VOUT(nom) - 0.1V, IOUT = 1A, legacy device",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Dropout voltage (new device)",
          "symbol": "VDO",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 122,
          "max": 250,
          "conditions": "VIN = VOUT(nom) - 0.1V, IOUT = 1A, new device",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Output current limit",
          "symbol": "ICL",
          "kind": "electrical",
          "unit": "A",
          "min": 1.05,
          "typ": 1.6,
          "max": 2.2,
          "conditions": "VOUT = 0.9 × VOUT(nom)",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "EN pin high (enabled)",
          "symbol": "VEN(high)",
          "kind": "electrical",
          "unit": "V",
          "min": 1.7,
          "typ": null,
          "max": null,
          "conditions": "Enabled; maximum printed as VIN",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "EN pin low (shutdown)",
          "symbol": "VEN(low)",
          "kind": "electrical",
          "unit": "V",
          "min": 0,
          "typ": null,
          "max": 0.5,
          "conditions": "Shutdown",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 125,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance (DCQ)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 53.1,
          "max": null,
          "conditions": "JEDEC high-K board, natural convection",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance (DCQ)",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 35.2,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board thermal resistance (DCQ)",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 7.8,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-top characterization parameter (DCQ)",
          "symbol": "ψJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 2.9,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board characterization parameter (DCQ)",
          "symbol": "ψJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 7.7,
          "max": null,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        }
      ]
    }
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  "discovery_pitch": "TPS73718DCQR (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
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