TPS54231DR

{
  "schema_version": 1,
  "type": "component",
  "slug": "tps54231dr",
  "title": "TPS54231DR",
  "brief": "Texas Instruments DC-DC Converters, SOIC-8. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.",
  "version": "0.2.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "pmic",
    "tps54231dr"
  ],
  "component": {
    "mpn": "TPS54231DR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-8",
    "pin_count": 8,
    "category": "PMIC",
    "subcategory": "DC-DC Converters",
    "datasheet": "https://www.ti.com/lit/ds/symlink/tps54231.pdf",
    "parts": {
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      "footprint": "tps54231dr.kicad_mod",
      "model_3d": "tps54231dr-etched.glb",
      "model_3d_plain": "tps54231dr.glb",
      "model_3d_step": "tps54231dr-etched.step",
      "model_3d_step_plain": "tps54231dr.step",
      "lbr": "tps54231dr.lbr"
    },
    "distributor_links": {
      "digikey": "296-23844-2-ND",
      "lcsc": "C28023"
    },
    "pins": [
      {
        "number": "1",
        "name": "BOOT",
        "type": "passive",
        "description": "Bootstrap capacitor node for the high-side MOSFET gate drive. 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 switches off until the capacitor is refreshed. BOOT abs max 38 V; BOOT-PH abs max 8 V."
      },
      {
        "number": "2",
        "name": "VIN",
        "type": "power_in",
        "description": "Input supply voltage pin, 3.5 V to 28 V operating range. Absolute maximum 30 V. Provides power to the internal high-side MOSFET and controller."
      },
      {
        "number": "3",
        "name": "EN",
        "type": "input",
        "description": "Enable input. Pull below 1.25 V to disable the device; float to enable. Can be programmed with two external resistors to set the input UVLO threshold. Enable threshold typ 1.25 V, max 1.35 V; abs max 6 V."
      },
      {
        "number": "4",
        "name": "SS",
        "type": "passive",
        "description": "Slow-start pin. An external capacitor to GND sets the output voltage rise time during startup. Charge current typ 2 µA; SS-to-VSENSE matching 10 mV; abs max 3 V."
      },
      {
        "number": "5",
        "name": "VSENSE",
        "type": "input",
        "description": "Inverting input of the transconductance (gm) error amplifier. Connects to the external resistor divider from VOUT to program the output voltage. Internal reference 0.8 V (0.772/0.828 V min/max). Abs max 3 V."
      },
      {
        "number": "6",
        "name": "COMP",
        "type": "output",
        "description": "Error-amplifier output and PWM comparator input. External frequency compensation network (R/C) connects here to shape the loop response. Abs max 3 V."
      },
      {
        "number": "7",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground return for internal circuitry and power stage."
      },
      {
        "number": "8",
        "name": "PH",
        "type": "power_out",
        "description": "Switch node - source of the internal high-side power MOSFET. Connects to the external inductor and catch diode. Rated to 2-A continuous output current; PH abs max 30 V (−0.6 V DC, −5 V for 10-ns transient)."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/tps54231.pdf",
        "pages": 35,
        "sha256": "401b0451b9771a05",
        "source_tier": "mfr"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 8,
        "described": 8,
        "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_3.9x4.9mm_P1.27mm@sha256:074ecb2092b24fa4",
      "mark": "drawn"
    },
    "models_3d": [
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        "file": "tps54231dr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "07f46cff378d30e6c27dfd5a03092c795323f86d91c71fc7e743f4f418dc553a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "tps54231dr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          6,
          4.9,
          1.75
        ],
        "zmin_mm": 0,
        "centre_offset_mm": 0,
        "footprint_binding": "identity",
        "sha256": "184f8bee729e05103633bf847672dca0a6723249ebd92becc21bfddfe3f8196e",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  },
  "metadata": {
    "specs": {
      "Manufacturer": "Texas Instruments",
      "Package": "SOIC-8",
      "Category": "PMIC",
      "Pins": "8"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "tps54231dr"
  ],
  "discovery_pitch": "TPS54231DR (Texas Instruments) component page with datasheet-verified CAD.",
  "author": {
    "name": "Ray"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
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    "tps54231dr.step",
    "tps54231dr-etched.step",
    "tps54231dr.lbr",
    "docs/hero.png",
    "docs/tps54231dr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "visibility": {
    "public": true
  },
  "variants": [
    {
      "mpn": "TPS54231DR",
      "kind": "packaging"
    },
    {
      "mpn": "TPS54231DRD",
      "kind": "packaging"
    }
  ],
  "updated_at": "2026-09-25T12:08:19.758Z"
}