DRV8434APWPR

{
  "slug": "drv8434apwpr",
  "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",
    "drv8434apwpr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "drv8434apwpr.kicad_sym",
    "drv8434apwpr.kicad_mod",
    "drv8434apwpr.glb",
    "drv8434apwpr.step",
    "drv8434apwpr.lbr",
    "docs/hero.png",
    "docs/drv8434apwpr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "drv8434apwpr-hero.glb",
    "drv8434apwpr-hero.overlay.json",
    "drv8434apwpr-etched.glb"
  ],
  "component": {
    "mpn": "DRV8434APWPR",
    "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/drv8434a",
    "parts": {
      "symbol": "drv8434apwpr.kicad_sym",
      "footprint": "drv8434apwpr.kicad_mod",
      "model_3d": "drv8434apwpr-hero.glb",
      "model_3d_plain": "drv8434apwpr-etched.glb",
      "model_3d_step": "drv8434apwpr-etched.step",
      "model_3d_step_plain": "drv8434apwpr.step",
      "lbr": "drv8434apwpr.lbr"
    },
    "distributor_links": {
      "lcsc": "C3681066",
      "digikey": "296-DRV8434APWPRTR-ND",
      "mouser": "595-DRV8434APWPR"
    },
    "distributor_check": {
      "checked_at": "2026-10-18T02:33:04Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-DRV8434APWPRTR-ND",
        "status": "found"
      },
      "mouser": {
        "pn": "595-DRV8434APWPR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "VCP",
        "type": "power_out",
        "description": "Charge-pump output, connected to VM through an X7R 0.22µF 16V ceramic capacitor."
      },
      {
        "number": "2",
        "name": "VM",
        "type": "power_in",
        "description": "Motor supply voltage, operating range 4.5 V to 48 V, bypassed to PGND with two 0.01µF ceramic capacitors (one per pin) and a bulk capacitor rated above VM; absolute maximum 50 V."
      },
      {
        "number": "3",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground, connected to system ground."
      },
      {
        "number": "4",
        "name": "AOUT1",
        "type": "output",
        "description": "Winding A output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
      },
      {
        "number": "5",
        "name": "AOUT1",
        "type": "output",
        "description": "Winding A output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
      },
      {
        "number": "6",
        "name": "AOUT2",
        "type": "output",
        "description": "Winding A output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
      },
      {
        "number": "7",
        "name": "AOUT2",
        "type": "output",
        "description": "Winding A output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
      },
      {
        "number": "8",
        "name": "BOUT2",
        "type": "output",
        "description": "Winding B output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
      },
      {
        "number": "9",
        "name": "BOUT2",
        "type": "output",
        "description": "Winding B output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
      },
      {
        "number": "10",
        "name": "BOUT1",
        "type": "output",
        "description": "Winding B output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
      },
      {
        "number": "11",
        "name": "BOUT1",
        "type": "output",
        "description": "Winding B output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
      },
      {
        "number": "12",
        "name": "PGND",
        "type": "power_in",
        "description": "Power ground, connected to system ground."
      },
      {
        "number": "13",
        "name": "VM",
        "type": "power_in",
        "description": "Motor supply voltage, operating range 4.5 V to 48 V, bypassed to PGND with two 0.01µF ceramic capacitors (one per pin) and a bulk capacitor rated above VM; absolute maximum 50 V."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground, connected to system ground."
      },
      {
        "number": "15",
        "name": "DVDD",
        "type": "power_out",
        "description": "Internal logic regulator output, nominally 5 V with up to 2 mA load, bypassed to GND with a 0.47µF to 1µF X7R ceramic capacitor rated 6.3 V or 10 V."
      },
      {
        "number": "16",
        "name": "nFAULT",
        "type": "output",
        "description": "Open-drain fault output, pulled low when a fault is detected and requires an external pull-up; sink current limited to 10 mA."
      },
      {
        "number": "17",
        "name": "VREF",
        "type": "power_in",
        "description": "Current-set reference input, maximum 3.3 V; can be driven from DVDD through a resistor divider."
      },
      {
        "number": "18",
        "name": "M0",
        "type": "input",
        "description": "Three-level microstep mode setting input that selects the step mode per Table 7-2."
      },
      {
        "number": "19",
        "name": "STL_REP",
        "type": "output",
        "description": "Open-drain stall report output that requires a pull-up resistor, goes high on stall and low on successful learning; can also be pulled low externally to disable stall reporting; sink current limited to 10 mA."
      },
      {
        "number": "20",
        "name": "TRQ_CNT/STL_TH",
        "type": "bidirectional",
        "description": "Torque-count analog output or stall-threshold analog input depending on STL_MODE; requires a 1 nF capacitor to GND."
      },
      {
        "number": "21",
        "name": "STL_MODE",
        "type": "input",
        "description": "Four-level input that programs the stall detection mode; a 330 kΩ resistor to GND disables stall detection."
      },
      {
        "number": "22",
        "name": "M1",
        "type": "input",
        "description": "Four-level microstep mode setting input that selects the step mode per Table 7-2."
      },
      {
        "number": "23",
        "name": "STEP",
        "type": "input",
        "description": "Step input; each rising edge advances the translator one step, with an operating frequency up to 500 kHz and an internal pull-down."
      },
      {
        "number": "24",
        "name": "DIR",
        "type": "input",
        "description": "Direction input whose logic level sets the step direction, with an internal pull-down."
      },
      {
        "number": "25",
        "name": "ENABLE",
        "type": "input",
        "description": "Logic low disables the outputs and logic high enables them; a high-impedance level enables 8x torque-count scaling."
      },
      {
        "number": "26",
        "name": "nSLEEP",
        "type": "input",
        "description": "Sleep mode control, logic high enables the device and logic low enters low-power sleep; a low pulse clears latched faults; internal pull-down; must not be connected to DVDD."
      },
      {
        "number": "27",
        "name": "CPL",
        "type": "passive",
        "description": "Charge-pump negative switch node, connected to CPH through an X7R 0.022µF ceramic capacitor rated for VM."
      },
      {
        "number": "28",
        "name": "CPH",
        "type": "passive",
        "description": "Charge-pump switch node, connected to CPL through an X7R 0.022µF ceramic capacitor rated for VM."
      },
      {
        "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: Pin numbers and names were taken from the HTSSOP column of the pin-function table (pages 3-4), since; The exposed thermal pad has no number in the datasheet table ('PAD'). It is listed as 'PAD' and type; CPH and CPL are charge-pump flying-capacitor switch nodes that the table labels only as power; they ",
          "exposed pad 29 added from the footprint",
          "dropped thermal pad ['EP'] absent from footprint"
        ],
        "pages_sent": 38,
        "cost_usd": 0.148,
        "at": "2026-10-18T02:29:43"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/drv8434a",
        "pages": 52,
        "sha256": "662fdbf7dfc53054",
        "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": "drv8434apwpr.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": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "drv8434apwpr-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": "7c4bc4ba0a8ca9a98af0b42fa7fe45fd8d2e7ff23e0a9ea30e34f2dd681feca7",
        "checked": "2026-10-18",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}