TPS54331DDAR

{
  "schema_version": 1,
  "type": "component",
  "slug": "tps54331ddar",
  "title": "TPS54331DDAR",
  "brief": "Texas Instruments DC-DC Converters, SOIC-8-EP. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "tps54331ddar"
  ],
  "component": {
    "mpn": "TPS54331DDAR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8-EP",
    "pin_count": 9,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/tps54331ddar.pdf",
    "parts": {
      "symbol": "tps54331ddar.kicad_sym",
      "footprint": "tps54331ddar.kicad_mod",
      "model_3d": "tps54331ddar-etched.glb",
      "model_3d_plain": "tps54331ddar.glb",
      "model_3d_step": "tps54331ddar-etched.step",
      "model_3d_step_plain": "tps54331ddar.step",
      "lbr": "tps54331ddar.lbr"
    },
    "distributor_links": {
      "digikey": "296-39419-2-ND",
      "lcsc": "C90761"
    },
    "pins": [
      {
        "number": "1",
        "name": "BOOT",
        "type": "output",
        "description": "Bootstrap capacitor node for the internal high-side MOSFET gate driver. A 0.1-µF capacitor is required between BOOT and PH. If the BOOT-PH voltage falls below the minimum requirement, the high-side MOSFET is forced off until the capacitor is refreshed. Absolute max BOOT: 38 V; BOOT-PH: 8 V."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage pin, 3.5 V to 28 V recommended operating range (absolute max 30 V). Bypass close to the pin with a low-ESR ceramic capacitor."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Pull below 1.25 V to disable the converter; float to enable. May be driven from a resistor divider off VIN to program input UVLO. Absolute max 6 V."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "input",
        "description": "Slow-start pin. An external capacitor from SS to GND sets the output-voltage rise time, limiting inrush current during startup."
      },
      {
        "number": "5",
        "name": "VSENSE",
        "type": "input",
        "description": "Inverting input of the internal transconductance (gm) error amplifier. Connected via the output-voltage feedback divider; the amplifier regulates VSENSE to the internal 0.8-V reference."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Error-amplifier output and PWM comparator input. Connect the frequency-compensation network (typically a series R-C plus optional high-frequency pole cap) between COMP and GND."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. On the DDA package this pin must also be connected to the exposed PowerPAD for proper thermal and electrical operation."
      },
      {
        "number": "8",
        "name": "PH",
        "type": "output",
        "description": "Switch node: source of the internal high-side power MOSFET. Connect to the inductor and to the cathode of the external freewheeling (catch) diode. Handles up to ~9-A source/sink transient current."
      },
      {
        "number": "9",
        "name": "PowerPAD",
        "type": "power_in",
        "description": "Exposed thermal pad on the DDA package only. Must be connected to the GND pin (pin 7) and soldered to a PCB ground plane for proper electrical and thermal performance."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/tps54331ddar.pdf",
        "pages": 36,
        "sha256": "94afb96d8b709e87",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 9,
        "described": 9,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "pin1": {
      "pad": "1",
      "at": [
        -2.475,
        -1.905
      ],
      "corner": "top-left",
      "source": "silk-marker",
      "derived_from": "SOIC-8-1EP_3.9x4.9mm_P1.27mm_EP2.29x3mm@sha256:a7971720bdda0353",
      "mark": "drawn"
    },
    "models_3d": [
      {
        "file": "tps54331ddar.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "2d6f7e774e8143e3320cbd59eb5be9f3b7864614644e3b072006e1eb05fb7fa6",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tps54331ddar-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.55
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "6a2518bb4c7827dc93655a52ec64b6d50edebb598b4440e29b2bbf97f03bfeca",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8-EP",
      "Category": "PMIC",
      "Pins": "9"
    },
    "characteristics": {
      "version": 1,
      "source": "datasheet",
      "datasheet_sha256": "94afb96d8b709e87",
      "rows": [
        {
          "name": "Input voltage (VIN pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (EN pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 6,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (BOOT pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 38,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Input voltage (VSENSE pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Voltage (COMP pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Voltage (SS pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.3,
          "typ": null,
          "max": 3,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "BOOT-PH voltage",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": null,
          "typ": null,
          "max": 8,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Output voltage (PH pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -0.6,
          "typ": null,
          "max": 30,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "PH pin negative transient",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "V",
          "min": -5,
          "typ": null,
          "max": null,
          "conditions": "10-ns transient from ground to negative peak",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Source current (EN pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Source current (BOOT pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "mA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Source current (VSENSE pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 10,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Source current (PH pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 9,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Source current (VIN pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "A",
          "min": null,
          "typ": null,
          "max": 9,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Sink current (COMP pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 100,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Sink current (SS pin)",
          "symbol": "",
          "kind": "absolute_maximum",
          "unit": "μA",
          "min": null,
          "typ": null,
          "max": 200,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature (absolute maximum)",
          "symbol": "TJ",
          "kind": "absolute_maximum",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating input voltage (VIN pin)",
          "symbol": "",
          "kind": "recommended_operating",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": 28,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Operating junction temperature (recommended)",
          "symbol": "TJ",
          "kind": "recommended_operating",
          "unit": "°C",
          "min": -40,
          "typ": null,
          "max": 150,
          "conditions": "",
          "source_page": 5,
          "source": "datasheet"
        },
        {
          "name": "Shutdown supply current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 1,
          "max": 4,
          "conditions": "EN = 0V, VIN = 12V, –40°C to 85°C",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Internal undervoltage lockout threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 3.5,
          "typ": null,
          "max": null,
          "conditions": "Rising and falling",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Operating non-switching supply current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 110,
          "max": 190,
          "conditions": "VSENSE = 0.85 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Enable threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": null,
          "typ": 1.25,
          "max": 1.35,
          "conditions": "Rising and falling",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Voltage reference",
          "symbol": "",
          "kind": "electrical",
          "unit": "V",
          "min": 0.772,
          "typ": 0.8,
          "max": 0.828,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "High-side MOSFET on resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 115,
          "max": 200,
          "conditions": "BOOT-PH = 3 V, VIN = 3.5 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "High-side MOSFET on resistance",
          "symbol": "",
          "kind": "electrical",
          "unit": "mΩ",
          "min": null,
          "typ": 80,
          "max": 150,
          "conditions": "BOOT-PH = 6 V, VIN = 12 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier source/sink current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": -7,
          "typ": null,
          "max": 7,
          "conditions": "V(COMP) = 1 V, 100-mV overdrive",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Current-limit threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "A",
          "min": 3.5,
          "typ": null,
          "max": 5.8,
          "conditions": "VIN = 12 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Switching frequency",
          "symbol": "",
          "kind": "electrical",
          "unit": "kHz",
          "min": 456,
          "typ": 570,
          "max": 684,
          "conditions": "VIN = 12 V, 25°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Minimum controllable on time",
          "symbol": "",
          "kind": "timing",
          "unit": "ns",
          "min": null,
          "typ": 105,
          "max": 130,
          "conditions": "VIN = 12 V, 25°C",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Maximum controllable duty ratio",
          "symbol": "",
          "kind": "electrical",
          "unit": "%",
          "min": 90,
          "typ": null,
          "max": 93,
          "conditions": "BOOT-PH = 6 V",
          "source_page": 7,
          "source": "datasheet"
        },
        {
          "name": "Input current at enable threshold – 50 mV",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": -1,
          "max": null,
          "conditions": "Enable threshold – 50 mV",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Input current at enable threshold + 50 mV",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": -4,
          "max": null,
          "conditions": "Enable threshold + 50 mV",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier transconductance (gm)",
          "symbol": "gm",
          "kind": "electrical",
          "unit": "μmhos",
          "min": null,
          "typ": 92,
          "max": null,
          "conditions": "–2 μA < I(COMP) < 2 μA, V(COMP) = 1 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier DC gain",
          "symbol": "",
          "kind": "electrical",
          "unit": "V/V",
          "min": null,
          "typ": 800,
          "max": null,
          "conditions": "VSENSE = 0.8 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Error amplifier unity gain bandwidth",
          "symbol": "",
          "kind": "electrical",
          "unit": "MHz",
          "min": null,
          "typ": 2.7,
          "max": null,
          "conditions": "5-pF capacitance from COMP to GND pins",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Switch current to COMP transconductance",
          "symbol": "",
          "kind": "electrical",
          "unit": "A/V",
          "min": null,
          "typ": 12,
          "max": null,
          "conditions": "VIN = 12 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Pulse skipping Eco-mode switch current threshold",
          "symbol": "",
          "kind": "electrical",
          "unit": "mA",
          "min": null,
          "typ": 160,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Thermal shutdown",
          "symbol": "",
          "kind": "electrical",
          "unit": "°C",
          "min": null,
          "typ": 165,
          "max": null,
          "conditions": "",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "SS charge current",
          "symbol": "",
          "kind": "electrical",
          "unit": "μA",
          "min": null,
          "typ": 2,
          "max": null,
          "conditions": "V(SS) = 0.4 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "SS to VSENSE matching",
          "symbol": "",
          "kind": "electrical",
          "unit": "mV",
          "min": null,
          "typ": 10,
          "max": null,
          "conditions": "V(SS) = 0.4 V",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-ambient thermal resistance (DDA)",
          "symbol": "RθJA",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 48.7,
          "max": null,
          "conditions": "DDA package",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (top) thermal resistance (DDA)",
          "symbol": "RθJC(top)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 52.4,
          "max": null,
          "conditions": "DDA package",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board thermal resistance (DDA)",
          "symbol": "RθJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 25.5,
          "max": null,
          "conditions": "DDA package",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-top characterization parameter (DDA)",
          "symbol": "ψJT",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 8.4,
          "max": null,
          "conditions": "DDA package",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-board characterization parameter (DDA)",
          "symbol": "ψJB",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 25.2,
          "max": null,
          "conditions": "DDA package",
          "source_page": 6,
          "source": "datasheet"
        },
        {
          "name": "Junction-to-case (bottom) thermal resistance (DDA)",
          "symbol": "RθJC(bot)",
          "kind": "thermal",
          "unit": "°C/W",
          "min": null,
          "typ": 2.3,
          "max": null,
          "conditions": "DDA package",
          "source_page": 6,
          "source": "datasheet"
        }
      ]
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tps54331ddar"
  ],
  "discovery_pitch": "TPS54331DDAR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "tps54331ddar.kicad_sym",
    "tps54331ddar.kicad_mod",
    "tps54331ddar.glb",
    "tps54331ddar.step",
    "tps54331ddar-etched.step",
    "tps54331ddar.lbr",
    "docs/hero.png",
    "docs/tps54331ddar-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "variants": [
    {
      "mpn": "TPS54331DDAR",
      "kind": "packaging"
    },
    {
      "mpn": "TPS54331DDARD",
      "kind": "packaging"
    },
    {
      "mpn": "TPS54331DDARDR",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T12:10:04.304Z"
}