DRV8825

{
  "schema_version": 1,
  "type": "component",
  "slug": "drv8825",
  "title": "DRV8825",
  "brief": "TI microstepping bipolar stepper driver, HTSSOP-28. Up to 2.5 A/coil, 1/32 step, STEP/DIR translator, 45 V. Datasheet-verified.",
  "version": "0.1.0",
  "license": "CC-BY-SA-4.0",
  "tags": [
    "component",
    "motor-driver",
    "stepper",
    "microstepping",
    "htssop-28",
    "texas-instruments"
  ],
  "component": {
    "mpn": "DRV8825",
    "manufacturer": "Texas Instruments",
    "package": "HTSSOP-28",
    "pin_count": 29,
    "category": "Motor Driver",
    "subcategory": "Bipolar stepper motor driver",
    "datasheet": "https://www.ti.com/lit/ds/symlink/drv8825.pdf",
    "parts": {
      "symbol": "drv8825.kicad_sym",
      "footprint": "drv8825.kicad_mod",
      "model_3d": "drv8825-etched.glb",
      "model_3d_plain": "drv8825.glb",
      "lbr": "drv8825.lbr",
      "model_3d_step": "drv8825-etched.step",
      "model_3d_step_plain": "drv8825.step"
    },
    "distributor_links": {},
    "pins": [
      {
        "number": "1",
        "name": "CP1",
        "type": "passive",
        "description": "Charge pump flying capacitor terminal 1. Connect a 0.01-uF 50-V ceramic capacitor between CP1 and CP2."
      },
      {
        "number": "2",
        "name": "CP2",
        "type": "passive",
        "description": "Charge pump flying capacitor terminal 2. Connect a 0.01-uF 50-V ceramic capacitor between CP1 and CP2."
      },
      {
        "number": "3",
        "name": "VCP",
        "type": "power_out",
        "description": "High-side gate drive voltage (charge pump output). Connect a 0.1-uF 16-V ceramic capacitor to VM and a 1-MOhm resistor to VM."
      },
      {
        "number": "4",
        "name": "VMA",
        "type": "power_in",
        "description": "Bridge A power supply (8.2 to 45 V). Must be tied to the same supply as VMB; bypass with a 0.1-uF cap to GND plus appropriate bulk capacitance."
      },
      {
        "number": "5",
        "name": "AOUT1",
        "type": "output",
        "description": "Bridge A output 1. Connect to bipolar stepper motor winding A. Positive winding current flows AOUT1 -> AOUT2. Rated for up to 2.5 A continuous."
      },
      {
        "number": "6",
        "name": "ISENA",
        "type": "passive",
        "description": "Bridge A ground / current-sense return. Connect the low side of bridge A through the current-sense resistor for bridge A to GND."
      },
      {
        "number": "7",
        "name": "AOUT2",
        "type": "output",
        "description": "Bridge A output 2. Connect to bipolar stepper motor winding A. Positive current is AOUT1 -> AOUT2."
      },
      {
        "number": "8",
        "name": "BOUT2",
        "type": "output",
        "description": "Bridge B output 2. Connect to bipolar stepper motor winding B. Positive current is BOUT1 -> BOUT2."
      },
      {
        "number": "9",
        "name": "ISENB",
        "type": "passive",
        "description": "Bridge B ground / current-sense return. Connect the low side of bridge B through the current-sense resistor for bridge B to GND."
      },
      {
        "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 power supply (8.2 to 45 V). Must be tied to the same supply as VMA; bypass with a 0.1-uF cap to GND plus appropriate bulk capacitance."
      },
      {
        "number": "12",
        "name": "AVREF",
        "type": "input",
        "description": "Bridge A current-set reference input. Reference voltage for winding-A regulated current. Normally AVREF and BVREF are tied together; can be driven from V3P3OUT. Recommended VREF range 1 to 3.5 V."
      },
      {
        "number": "13",
        "name": "BVREF",
        "type": "input",
        "description": "Bridge B current-set reference input. Reference voltage for winding-B regulated current. Normally tied to AVREF."
      },
      {
        "number": "14",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Also connect the exposed PowerPAD (PPAD) to GND for thermal dissipation."
      },
      {
        "number": "15",
        "name": "V3P3OUT",
        "type": "power_out",
        "description": "Internal 3.3-V LDO regulator output (3.2/3.3/3.4 V typ, up to 1 mA load). Bypass to GND with a 0.47-uF 6.3-V ceramic capacitor. Can be used to supply VREF."
      },
      {
        "number": "16",
        "name": "nRESET",
        "type": "input",
        "description": "Active-low reset input. Initializes the indexer logic and disables the H-bridge outputs when low. Internal pulldown."
      },
      {
        "number": "17",
        "name": "nSLEEP",
        "type": "input",
        "description": "Sleep-mode input. Logic high enables the device; logic low enters low-power sleep. Internal pulldown. tWAKE = 1.7 ms from nSLEEP high to STEP accepted."
      },
      {
        "number": "18",
        "name": "nFAULT",
        "type": "output",
        "description": "Open-drain fault output. Logic low when a fault condition (overtemperature, overcurrent) is present. Requires external pullup. VOL = 0.5 V max at IO = 5 mA."
      },
      {
        "number": "19",
        "name": "DECAY",
        "type": "input",
        "description": "Decay-mode select input. Low = slow decay; open (floating) = mixed decay; high = fast decay. Has both internal pullup (~130 kOhm) and pulldown (~80 kOhm) so the floating state resolves to mid-rail (mixed)."
      },
      {
        "number": "20",
        "name": "DIR",
        "type": "input",
        "description": "Direction input. Logic level sets the stepping direction. Internal pulldown (~100 kOhm)."
      },
      {
        "number": "21",
        "name": "nENBL",
        "type": "input",
        "description": "Enable input. Logic high disables the outputs and indexer operation; logic low enables. Internal pulldown."
      },
      {
        "number": "22",
        "name": "STEP",
        "type": "input",
        "description": "Step input. A rising edge causes the internal indexer to advance one microstep. Internal pulldown. fSTEP up to 250 kHz; min high/low pulse 1.9 us."
      },
      {
        "number": "23",
        "name": "NC",
        "type": "unconnected",
        "description": "No internal connection. Leave this pin unconnected."
      },
      {
        "number": "24",
        "name": "MODE0",
        "type": "input",
        "description": "Microstep-mode select bit 0. Together with MODE1/MODE2 sets full, 1/2, 1/4, 1/8, 1/16, or 1/32 step. Internal pulldown."
      },
      {
        "number": "25",
        "name": "MODE1",
        "type": "input",
        "description": "Microstep-mode select bit 1. Together with MODE0/MODE2 sets the microstep resolution. Internal pulldown."
      },
      {
        "number": "26",
        "name": "MODE2",
        "type": "input",
        "description": "Microstep-mode select bit 2. Together with MODE0/MODE1 sets the microstep resolution. Internal pulldown."
      },
      {
        "number": "27",
        "name": "nHOME",
        "type": "output",
        "description": "Open-drain home-position output. Logic low when the indexer is at the home state of the step table. Requires external pullup."
      },
      {
        "number": "28",
        "name": "GND",
        "type": "power_in",
        "description": "Device ground. Second ground pin; connect together with pin 14 and the PowerPAD."
      },
      {
        "number": "PAD",
        "name": "PPAD",
        "type": "power_in",
        "description": "Exposed thermal PowerPAD on the package bottom. Must be soldered to the PCB ground plane for thermal performance and connected to GND."
      }
    ],
    "provenance": {
      "extractor": "ds2sf",
      "datasheet": {
        "url": "https://www.ti.com/lit/ds/symlink/drv8825.pdf",
        "pages": 36,
        "sha256": "5b4dccc2497334e1",
        "source_tier": "mfr"
      },
      "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"
    }
  },
  "metadata": {
    "specs": {
      "Type": "Bipolar stepper motor driver",
      "Output": "2 N-channel full-bridges",
      "Current": "up to 2.5 A/coil (with cooling)",
      "Microstepping": "full to 1/32 (MODE0-2)",
      "Control": "STEP + DIR indexer",
      "Motor supply": "8.2-45 V",
      "Protection": "OCP + OTP + UVLO",
      "Package": "HTSSOP-28 (thermal pad)"
    }
  },
  "sections": [
    "hero",
    "viewers",
    "readme",
    "breadcrumbs",
    "info"
  ],
  "discovery_triggers": [
    "drv8825",
    "stepper driver",
    "microstepping driver",
    "3d printer stepper",
    "a4988 upgrade"
  ],
  "discovery_pitch": "DRV8825 microstepping bipolar stepper motor driver (HTSSOP-28) with datasheet-verified pinout, KiCad symbol/footprint/3D, and full provenance.",
  "author": {
    "name": "Ray",
    "email": "[email protected]"
  },
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "drv8825.kicad_sym",
    "drv8825.kicad_mod",
    "drv8825.glb",
    "drv8825.lbr",
    "docs/hero.png",
    "docs/drv8825-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "drv8825-etched.step"
  ],
  "variants": [
    {
      "mpn": "DRV8825PWPR (HTSSOP-28)",
      "kind": "packaging"
    },
    {
      "mpn": "DRV8825 module (stepstick)",
      "kind": "packaging"
    }
  ]
}