DRV8841PWPR

{
  "slug": "drv8841pwpr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Stepper Motor Driver, HTSSOP-28. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "motor driver ics",
    "drv8841pwpr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "drv8841pwpr.kicad_sym",
    "drv8841pwpr.kicad_mod",
    "drv8841pwpr.glb",
    "drv8841pwpr.step",
    "drv8841pwpr.lbr",
    "docs/hero.png",
    "docs/drv8841pwpr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "DRV8841PWPR",
    "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/drv8841",
    "parts": {
      "symbol": "drv8841pwpr.kicad_sym",
      "footprint": "drv8841pwpr.kicad_mod",
      "model_3d": "drv8841pwpr-etched.glb",
      "model_3d_plain": "drv8841pwpr.glb",
      "model_3d_step": "drv8841pwpr-etched.step",
      "model_3d_step_plain": "drv8841pwpr.step",
      "lbr": "drv8841pwpr.lbr"
    },
    "distributor_links": {
      "lcsc": "C36542"
    },
    "pins": [
      {
        "number": "1",
        "name": "CP1",
        "type": "bidirectional",
        "description": "Charge pump flying capacitor node; requires 0.01-µF 50-V capacitor between CP1 and CP2."
      },
      {
        "number": "2",
        "name": "CP2",
        "type": "bidirectional",
        "description": "Charge pump flying capacitor node; requires 0.01-µF 50-V capacitor between CP1 and CP2."
      },
      {
        "number": "3",
        "name": "VCP",
        "type": "bidirectional",
        "description": "High-side gate drive voltage; connect through 0.1-µF 16-V capacitor and 1-MΩ resistor to VM."
      },
      {
        "number": "4",
        "name": "VMA",
        "type": "power_in",
        "description": "Bridge A motor power supply; accepts 8.2 V to 45 V with 0.1-µF bypass capacitor to GND per pin."
      },
      {
        "number": "5",
        "name": "AOUT1",
        "type": "output",
        "description": "Bridge A output 1; drives motor winding A with 2.5-A peak drive current."
      },
      {
        "number": "6",
        "name": "ISENA",
        "type": "bidirectional",
        "description": "Bridge A current sense; connect external sense resistor for bridge A current regulation."
      },
      {
        "number": "7",
        "name": "AOUT2",
        "type": "output",
        "description": "Bridge A output 2; drives motor winding A with 2.5-A peak drive current."
      },
      {
        "number": "8",
        "name": "BOUT2",
        "type": "output",
        "description": "Bridge B output 2; drives motor winding B with 2.5-A peak drive current."
      },
      {
        "number": "9",
        "name": "ISENB",
        "type": "bidirectional",
        "description": "Bridge B current sense; connect external sense resistor for bridge B current regulation."
      },
      {
        "number": "10",
        "name": "BOUT1",
        "type": "output",
        "description": "Bridge B output 1; drives motor winding B with 2.5-A peak drive current."
      },
      {
        "number": "11",
        "name": "VMB",
        "type": "power_in",
        "description": "Bridge B motor power supply; accepts 8.2 V to 45 V with 0.1-µF bypass capacitor to GND per pin."
      },
      {
        "number": "12",
        "name": "AVREF",
        "type": "input",
        "description": "Bridge A reference voltage input; accepts 1 V to 3.5 V for current threshold setting (0 V to 1 V acceptable with degraded accuracy)."
      },
      {
        "number": "13",
        "name": "BVREF",
        "type": "input",
        "description": "Bridge B reference voltage input; accepts 1 V to 3.5 V for current threshold setting (0 V to 1 V acceptable with degraded accuracy)."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference; return path for all signals."
      },
      {
        "number": "15",
        "name": "V3P3OUT",
        "type": "power_out",
        "description": "3.3-V regulator output; provides 3.2 V to 3.4 V at 0 to 1-mA output current, bypass with 0.47-µF 6.3-V capacitor."
      },
      {
        "number": "16",
        "name": "nRESET",
        "type": "input",
        "description": "Active-low reset input; resets internal logic and disables H-bridge outputs when low."
      },
      {
        "number": "17",
        "name": "nSLEEP",
        "type": "input",
        "description": "Sleep mode control input; logic high enables device, logic low enters low-power sleep mode."
      },
      {
        "number": "18",
        "name": "nFAULT",
        "type": "tri_state",
        "description": "Open-drain fault output; pulled low on overtemperature or overcurrent protection event."
      },
      {
        "number": "19",
        "name": "DECAY",
        "type": "input",
        "description": "Decay mode control input; low = slow decay, open = mixed decay, high = fast decay."
      },
      {
        "number": "20",
        "name": "AIN2",
        "type": "input",
        "description": "Bridge A input 2; logic level controls AOUT2 output state."
      },
      {
        "number": "21",
        "name": "AIN1",
        "type": "input",
        "description": "Bridge A input 1; logic level controls AOUT1 output state."
      },
      {
        "number": "22",
        "name": "BIN1",
        "type": "input",
        "description": "Bridge B input 1; logic level controls BOUT1 output state."
      },
      {
        "number": "23",
        "name": "BIN2",
        "type": "input",
        "description": "Bridge B input 2; logic level controls BOUT2 output state."
      },
      {
        "number": "24",
        "name": "AI0",
        "type": "input",
        "description": "Bridge A current setting bit 0; sets current level with AI1 (00=100%, 01=71%, 10=38%, 11=0%)."
      },
      {
        "number": "25",
        "name": "AI1",
        "type": "input",
        "description": "Bridge A current setting bit 1; sets current level with AI0 (00=100%, 01=71%, 10=38%, 11=0%)."
      },
      {
        "number": "26",
        "name": "BI0",
        "type": "input",
        "description": "Bridge B current setting bit 0; sets current level with BI1 (00=100%, 01=71%, 10=38%, 11=0%)."
      },
      {
        "number": "27",
        "name": "BI1",
        "type": "input",
        "description": "Bridge B current setting bit 1; sets current level with BI0 (00=100%, 01=71%, 10=38%, 11=0%)."
      },
      {
        "number": "28",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground reference (PowerPAD); return path and thermal pad."
      },
      {
        "number": "29",
        "name": "EP",
        "type": "passive",
        "description": "Exposed pad (from the footprint; not named in the datasheet pin table)."
      }
    ],
    "provenance": {
      "extractor": "extract_pins 0.2",
      "factory_chain": {
        "factory": "2.0.0",
        "extractor": "extract_pins 0.2",
        "primary_model": "claude-haiku-4-5-20251001",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-4-6",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "exposed pad 29 added from the footprint"
        ],
        "pages_sent": 32,
        "cost_usd": 0.3919,
        "at": "2026-09-21T19:54:06"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/drv8841",
        "pages": 32,
        "sha256": "41ed628a530332e4",
        "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": "drv8841pwpr.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": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "drv8841pwpr-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": "80961cf9180dc1ada7a6100bc1c610ae1151701db4f943fa9488a165a571884c",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}