DRV8434PWPR

{
  "slug": "drv8434pwpr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Stepper Motor Driver, HTSSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "motor driver ics",
    "drv8434pwpr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "drv8434pwpr.kicad_sym",
    "drv8434pwpr.kicad_mod",
    "drv8434pwpr.glb",
    "drv8434pwpr.step",
    "drv8434pwpr.lbr",
    "docs/hero.png",
    "docs/drv8434pwpr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "drv8434pwpr-hero.glb",
    "drv8434pwpr-hero.overlay.json"
  ],
  "component": {
    "mpn": "DRV8434PWPR",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-28",
    "pin_count": 29,
    "category": "Motor Driver ICs",
    "subcategory": "Stepper Motor Driver",
    "datasheet": "https://www.ti.com/cn/lit/gpn/drv8434",
    "parts": {
      "symbol": "drv8434pwpr.kicad_sym",
      "footprint": "drv8434pwpr.kicad_mod",
      "model_3d": "drv8434pwpr-hero.glb",
      "model_3d_plain": "drv8434pwpr.glb",
      "model_3d_step": "drv8434pwpr-etched.step",
      "model_3d_step_plain": "drv8434pwpr.step",
      "lbr": "drv8434pwpr.lbr"
    },
    "distributor_links": {
      "lcsc": "C3681245",
      "digikey": "296-DRV8434PWPRTR-ND",
      "mouser": "595-DRV8434PWPR"
    },
    "distributor_check": {
      "checked_at": "2026-10-08T01:02:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-DRV8434PWPRTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-DRV8434PWPR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCP",
        "type": "power_out",
        "description": "Charge pump output; connect an X7R 0.22µF 16V ceramic capacitor between VCP and VM."
      },
      {
        "number": "2",
        "name": "VM",
        "type": "power_in",
        "description": "Motor supply voltage, 4.5 V to 48 V for normal DC operation (absolute maximum 50 V); bypass to PGND with two 0.01µF ceramic capacitors (one per pin) and a bulk capacitor rated for VM."
      },
      {
        "number": "3",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground; connect to system ground."
      },
      {
        "number": "4",
        "name": "AOUT1",
        "type": "output",
        "description": "Winding A output; connect to a stepper motor winding."
      },
      {
        "number": "5",
        "name": "AOUT1",
        "type": "output",
        "description": "Winding A output; connect to a stepper motor winding."
      },
      {
        "number": "6",
        "name": "AOUT2",
        "type": "output",
        "description": "Winding A output; connect to a stepper motor winding."
      },
      {
        "number": "7",
        "name": "AOUT2",
        "type": "output",
        "description": "Winding A output; connect to a stepper motor winding."
      },
      {
        "number": "8",
        "name": "BOUT2",
        "type": "output",
        "description": "Winding B output; connect to a stepper motor winding."
      },
      {
        "number": "9",
        "name": "BOUT2",
        "type": "output",
        "description": "Winding B output; connect to a stepper motor winding."
      },
      {
        "number": "10",
        "name": "BOUT1",
        "type": "output",
        "description": "Winding B output; connect to a stepper motor winding."
      },
      {
        "number": "11",
        "name": "BOUT1",
        "type": "output",
        "description": "Winding B output; connect to a stepper motor winding."
      },
      {
        "number": "12",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground; connect to system ground."
      },
      {
        "number": "13",
        "name": "VM",
        "type": "power_in",
        "description": "Motor supply voltage, 4.5 V to 48 V for normal DC operation (absolute maximum 50 V); bypass to PGND with the same capacitors as pin 2."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground; connect to system ground."
      },
      {
        "number": "15",
        "name": "DVDD",
        "type": "power_out",
        "description": "Internal 5 V logic regulator output (2 mA maximum external load); bypass to GND with a 0.47µF to 1µF X7R 6.3 V or 10 V ceramic capacitor."
      },
      {
        "number": "16",
        "name": "nFAULT",
        "type": "output",
        "description": "Open-drain fault indicator that goes low on a fault and requires an external pull-up to 5 V, 3.3 V or 1.8 V (absolute maximum sink current 10 mA)."
      },
      {
        "number": "17",
        "name": "VREF",
        "type": "power_in",
        "description": "Current-set reference input with a maximum of 3.3 V; DVDD can be divided down through a resistor divider to supply it."
      },
      {
        "number": "18",
        "name": "M0",
        "type": "input",
        "description": "Microstep mode select (tri-level input) with an internal pull-down resistor."
      },
      {
        "number": "19",
        "name": "TOFF",
        "type": "input",
        "description": "Quad-level input that sets the PWM off-time and, in smart tune ripple control mode, the ripple current."
      },
      {
        "number": "20",
        "name": "DECAY1",
        "type": "input",
        "description": "Decay mode select (tri-level input); when Hi-Z, smart tune dynamic decay is selected regardless of DECAY0."
      },
      {
        "number": "21",
        "name": "DECAY0",
        "type": "input",
        "description": "Decay mode select (tri-level input) together with DECAY1."
      },
      {
        "number": "22",
        "name": "M1",
        "type": "input",
        "description": "Microstep mode select (quad-level input)."
      },
      {
        "number": "23",
        "name": "STEP",
        "type": "input",
        "description": "Step input; each rising edge advances the indexer by one step, with an internal pull-down resistor."
      },
      {
        "number": "24",
        "name": "DIR",
        "type": "input",
        "description": "Direction input whose logic level sets the step direction, with an internal pull-down resistor."
      },
      {
        "number": "25",
        "name": "ENABLE",
        "type": "input",
        "description": "Logic low disables the outputs, logic high enables them; internally pulled up to DVDD, and it also selects the OCP and OTSD response (latched when Hi-Z, automatic retry when high)."
      },
      {
        "number": "26",
        "name": "nSLEEP",
        "type": "input",
        "description": "Logic high enables the device and logic low puts it in low-power sleep; internal pull-down, a low pulse clears faults, and it must not be tied to DVDD."
      },
      {
        "number": "27",
        "name": "CPL",
        "type": "passive",
        "description": "Charge pump negative switch node; connect a VM-rated X7R 0.022µF ceramic capacitor between CPH and CPL."
      },
      {
        "number": "28",
        "name": "CPH",
        "type": "passive",
        "description": "Charge pump switch node; connect a VM-rated X7R 0.022µF ceramic capacitor between CPH and CPL."
      },
      {
        "number": "29",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.3",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.3",
        "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: The HTSSOP exposed thermal PAD (PowerPAD) is listed in the table with no pin number ('-'); it is omi; The datasheet table gives CPH and CPL type as '—' (power). They are charge pump switch and flying-ca; DVDD is the internal regulator output, typed power_out. The datasheet table just says 'power'.",
          "exposed pad 29 added from the footprint"
        ],
        "pages_sent": 32,
        "cost_usd": 0.1396,
        "at": "2026-10-08T01:02:42"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/drv8434",
        "pages": 54,
        "sha256": "d73d3e37312bc8d5",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 29,
        "described": 29,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
    },
    "viewers": {
      "symbol": "viewers/symbol.html",
      "footprint": "viewers/footprint.html"
    },
    "models_3d": [
      {
        "file": "drv8434pwpr.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.2,
          9.7,
          1.05
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "drv8434pwpr-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          7.2,
          9.7,
          1.05
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "ee013f557c4b27a32feb81ad6ae6f7867b4ed8a083f961b6f02077d55a6438ff",
        "checked": "2026-10-08",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}