DRV8825PWPR

{
  "slug": "drv8825pwpr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Stepper Motor Driver, HTSSOP-28-EP. Datasheet-verified pinout, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "motor driver ics",
    "drv8825pwpr",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "drv8825pwpr.kicad_sym",
    "drv8825pwpr.kicad_mod",
    "drv8825pwpr.glb",
    "drv8825pwpr.step",
    "drv8825pwpr.lbr",
    "docs/hero.png",
    "docs/drv8825pwpr-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html"
  ],
  "component": {
    "mpn": "DRV8825PWPR",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-28-EP",
    "pin_count": 29,
    "category": "Motor Driver ICs",
    "subcategory": "Stepper Motor Driver",
    "datasheet": "https://www.ti.com/cn/lit/ds/symlink/drv8825.pdf",
    "parts": {
      "symbol": "drv8825pwpr.kicad_sym",
      "footprint": "drv8825pwpr.kicad_mod",
      "model_3d": "drv8825pwpr-etched.glb",
      "model_3d_plain": "drv8825pwpr.glb",
      "model_3d_step": "drv8825pwpr-etched.step",
      "model_3d_step_plain": "drv8825pwpr.step",
      "lbr": "drv8825pwpr.lbr"
    },
    "distributor_links": {
      "lcsc": "C81582"
    },
    "pins": [
      {
        "number": "1",
        "name": "CP1",
        "type": "bidirectional",
        "description": "Charge pump flying capacitor connection; connect 0.01-μF 50-V capacitor between CP1 and CP2."
      },
      {
        "number": "2",
        "name": "CP2",
        "type": "bidirectional",
        "description": "Charge pump flying capacitor connection; connect 0.01-μF 50-V capacitor between CP1 and CP2."
      },
      {
        "number": "3",
        "name": "VCP",
        "type": "bidirectional",
        "description": "High-side gate drive voltage supply; connect 0.1-μF 16-V ceramic capacitor and 1-MΩ resistor between VCP and VMA."
      },
      {
        "number": "4",
        "name": "VMA",
        "type": "power_in",
        "description": "Bridge A motor power supply input (8.2 to 45 V); bypass with 0.1-μF capacitor to GND."
      },
      {
        "number": "5",
        "name": "AOUT1",
        "type": "output",
        "description": "Bridge A output 1; connect to bipolar stepper motor winding A."
      },
      {
        "number": "6",
        "name": "ISENA",
        "type": "bidirectional",
        "description": "Bridge A current sense and ground connection; connect current sense resistor to measure winding current."
      },
      {
        "number": "7",
        "name": "AOUT2",
        "type": "output",
        "description": "Bridge A output 2; positive current flows from AOUT1 to AOUT2."
      },
      {
        "number": "8",
        "name": "BOUT2",
        "type": "output",
        "description": "Bridge B output 2; positive current flows from BOUT1 to BOUT2."
      },
      {
        "number": "9",
        "name": "ISENB",
        "type": "bidirectional",
        "description": "Bridge B current sense and ground connection; connect current sense resistor to measure winding current."
      },
      {
        "number": "10",
        "name": "BOUT1",
        "type": "output",
        "description": "Bridge B output 1; connect to bipolar stepper motor winding B."
      },
      {
        "number": "11",
        "name": "VMB",
        "type": "power_in",
        "description": "Bridge B motor power supply input (8.2 to 45 V); bypass with 0.47-μF 6.3-V ceramic capacitor to GND."
      },
      {
        "number": "12",
        "name": "AVREF",
        "type": "input",
        "description": "Bridge A current set reference input (1 to 3.5 V); sets maximum motor winding current via external resistor divider."
      },
      {
        "number": "13",
        "name": "BVREF",
        "type": "input",
        "description": "Bridge B current set reference input (1 to 3.5 V); sets maximum motor winding current via external resistor divider."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground."
      },
      {
        "number": "15",
        "name": "V3P3OUT",
        "type": "output",
        "description": "3.3-V internal regulator output (0 to 1 mA load current); supplies internal reference and can power external logic."
      },
      {
        "number": "16",
        "name": "nRESET",
        "type": "input",
        "description": "Active-low reset input with 100-kΩ internal pulldown; resets indexer to home position and disables H-bridge outputs."
      },
      {
        "number": "17",
        "name": "nSLEEP",
        "type": "input",
        "description": "Sleep mode control input with 1-MΩ internal pulldown; logic high for normal operation, logic low for sleep mode."
      },
      {
        "number": "18",
        "name": "nFAULT",
        "type": "tri_state",
        "description": "Open-drain fault output; pulled low on overcurrent, thermal shutdown, or undervoltage lockout condition."
      },
      {
        "number": "19",
        "name": "DECAY",
        "type": "input",
        "description": "Decay mode selection input with ~130-kΩ internal pullup and ~80-kΩ pulldown; logic low = slow decay, floating = mixed decay, logic high = fast decay."
      },
      {
        "number": "20",
        "name": "DIR",
        "type": "input",
        "description": "Direction input with 100-kΩ internal pulldown; determines stepper motor rotation direction with each STEP pulse."
      },
      {
        "number": "21",
        "name": "nENBL",
        "type": "input",
        "description": "Active-high enable input with 100-kΩ internal pulldown; logic low enables H-bridges and indexer, logic high disables."
      },
      {
        "number": "22",
        "name": "STEP",
        "type": "input",
        "description": "Step pulse input with 100-kΩ internal pulldown; rising edge advances indexer by one step state."
      },
      {
        "number": "23",
        "name": "NC",
        "type": "unconnected",
        "description": "No connect pin; leave unconnected."
      },
      {
        "number": "24",
        "name": "MODE0",
        "type": "input",
        "description": "Microstep mode select bit 0 with 100-kΩ internal pulldown; combined with MODE1/MODE2 sets resolution from full step to 1/32 step."
      },
      {
        "number": "25",
        "name": "MODE1",
        "type": "input",
        "description": "Microstep mode select bit 1 with 100-kΩ internal pulldown; combined with MODE0/MODE2 sets resolution from full step to 1/32 step."
      },
      {
        "number": "26",
        "name": "MODE2",
        "type": "input",
        "description": "Microstep mode select bit 2 with 100-kΩ internal pulldown; combined with MODE0/MODE1 sets resolution from full step to 1/32 step."
      },
      {
        "number": "27",
        "name": "nHOME",
        "type": "tri_state",
        "description": "Open-drain home position output; logic low when indexer is at 45° home position state."
      },
      {
        "number": "28",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground and thermal pad connection."
      },
      {
        "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": 36,
        "cost_usd": 0.3897,
        "at": "2026-09-17T21:17:26"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/ds/symlink/drv8825.pdf",
        "pages": 36,
        "sha256": "5b4dccc2497334e1",
        "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": "drv8825pwpr.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": "drv8825pwpr-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": "6775b03fbe2e6edf77226713e45055067083e76f51f6cefa3326119999f2f60a",
        "checked": "2026-10-07",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}