MS35774

{
  "slug": "ms35774",
  "version": "0.1.0",
  "type": "component",
  "description": "Hangzhou Ruimeng Tech Motor Driver ICs, QFN-28-EP(5x5). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
    "component",
    "power supply chip",
    "ms35774",
    "factory-2.0.0",
    "extractor-text"
  ],
  "dependencies": {},
  "hero": {
    "type": "image",
    "path": "docs/hero.png"
  },
  "files": [
    "page.json",
    "README.md",
    "ms35774.kicad_sym",
    "ms35774.kicad_mod",
    "ms35774.glb",
    "ms35774.step",
    "ms35774.lbr",
    "docs/hero.png",
    "docs/ms35774-datasheet.pdf",
    "viewers/symbol.html",
    "viewers/footprint.html",
    "ms35774-hero.glb",
    "ms35774-hero.overlay.json",
    "ms35774-etched.glb"
  ],
  "component": {
    "mpn": "MS35774",
    "manufacturer": "Hangzhou Ruimeng Tech",
    "package": "QFN-28-EP(5x5)",
    "pin_count": 29,
    "category": "Power Supply Chip",
    "subcategory": "Motor Driver ICs",
    "datasheet": "https://datasheet.lcsc.com/datasheet/pdf/43f449a2443df0496b30d9c418987be6.pdf",
    "parts": {
      "symbol": "ms35774.kicad_sym",
      "footprint": "ms35774.kicad_mod",
      "model_3d": "ms35774-hero.glb",
      "model_3d_plain": "ms35774-etched.glb",
      "model_3d_step": "ms35774-etched.step",
      "model_3d_step_plain": "ms35774.step",
      "lbr": "ms35774.lbr"
    },
    "distributor_links": {
      "lcsc": "C3020561"
    },
    "distributor_check": {
      "checked_at": "2026-10-22T23:07:59Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": null,
        "status": "deferred",
        "error": "shared DigiKey quota guard: 702 calls left today"
      },
      "mouser": {
        "pn": null,
        "status": "quota"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "BOUT2",
        "type": "bidirectional",
        "description": "Motor coil B output 2."
      },
      {
        "number": "2",
        "name": "ENN",
        "type": "input",
        "description": "Enable input; high level turns the outputs off, low turns the output drivers on."
      },
      {
        "number": "3",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "4",
        "name": "CPO",
        "type": "bidirectional",
        "description": "Charge pump capacitor output."
      },
      {
        "number": "5",
        "name": "CPI",
        "type": "bidirectional",
        "description": "Charge pump capacitor input, connect a 22nF (50V) capacitor to CPO."
      },
      {
        "number": "6",
        "name": "VCP",
        "type": "bidirectional",
        "description": "Charge pump voltage, connect a 100nF capacitor to VM."
      },
      {
        "number": "7",
        "name": "NC",
        "type": "unconnected",
        "description": "Not used; may be left floating or connected to ground."
      },
      {
        "number": "8",
        "name": "V5",
        "type": "bidirectional",
        "description": "Internal 5V LDO, connect a 2.2uF to 4.7uF capacitor to ground."
      },
      {
        "number": "9",
        "name": "MS1",
        "type": "input",
        "description": "Microstep configuration input with internal pull-down resistor (160kΩ)."
      },
      {
        "number": "10",
        "name": "MS2",
        "type": "input",
        "description": "Microstep configuration input with internal pull-down resistor (160kΩ)."
      },
      {
        "number": "11",
        "name": "FAULT",
        "type": "output",
        "description": "Internal fault signal output; high means output drivers are off, reset by setting ENN high."
      },
      {
        "number": "12",
        "name": "FG0",
        "type": "output",
        "description": "Outputs a pulse at the positive-going zero crossing of coil A current."
      },
      {
        "number": "13",
        "name": "CLK",
        "type": "input",
        "description": "Clock input; connect to ground when using the internal clock (external clock 4 to 18MHz)."
      },
      {
        "number": "14",
        "name": "PDN",
        "type": "bidirectional",
        "description": "Power-down not controlled by input; low level enables automatic standstill current reduction mode."
      },
      {
        "number": "15",
        "name": "VIO",
        "type": "power_in",
        "description": "Supply for the digital I/O pins, 1.8V to 5V."
      },
      {
        "number": "16",
        "name": "STEP",
        "type": "input",
        "description": "Microstep step input."
      },
      {
        "number": "17",
        "name": "VREF",
        "type": "power_in",
        "description": "Analog reference voltage input for current control, or analog reference current input in internal sense resistor mode."
      },
      {
        "number": "18",
        "name": "GND",
        "type": "power_in",
        "description": "Ground."
      },
      {
        "number": "19",
        "name": "DIR",
        "type": "input",
        "description": "Direction input with internal pull-down resistor."
      },
      {
        "number": "20",
        "name": "NC",
        "type": "unconnected",
        "description": "Not used; may be left floating or connected to ground."
      },
      {
        "number": "21",
        "name": "AOUT2",
        "type": "bidirectional",
        "description": "Motor coil A output 2."
      },
      {
        "number": "22",
        "name": "VM",
        "type": "power_in",
        "description": "Motor supply voltage."
      },
      {
        "number": "23",
        "name": "SENA",
        "type": "bidirectional",
        "description": "Coil A low-side MOS source; connect sense resistor to ground, or connect directly to ground in internal sense resistor mode."
      },
      {
        "number": "24",
        "name": "AOUT1",
        "type": "bidirectional",
        "description": "Motor coil A output 1."
      },
      {
        "number": "25",
        "name": "NC",
        "type": "unconnected",
        "description": "Not used; may be left floating or connected to ground."
      },
      {
        "number": "26",
        "name": "BOUT1",
        "type": "bidirectional",
        "description": "Motor coil B output 1."
      },
      {
        "number": "27",
        "name": "SENB",
        "type": "bidirectional",
        "description": "Coil B low-side MOS source; connect sense resistor to ground, or connect directly to ground in internal sense resistor mode."
      },
      {
        "number": "28",
        "name": "VM",
        "type": "power_in",
        "description": "Motor supply voltage."
      },
      {
        "number": "29",
        "name": "PAD",
        "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-sonnet-5-5",
        "primary_mode": "text",
        "consensus_model": "claude-sonnet-5-5",
        "consensus": "agreed",
        "guards": "pin_guards 0.1: passed",
        "guard_notes": [
          "extractor flagged: Datasheet pin table lists the exposed pad as '-' with name PAD; 'EP' used as pin number. Pin 7 is li; Microstep table on page 8 lists only four settings (1/8, 1/2, 1/4, 1/16), inconsistent with the 2/4/; Pin types for IO-class pins (charge pump, V5, coil outputs, SENx) are inferred from the 'IO' attribu"
        ],
        "pages_sent": 14,
        "cost_usd": 0.0466,
        "at": "2026-10-22T23:07:48"
      },
      "datasheet": {
        "url": "https://datasheet.lcsc.com/datasheet/pdf/43f449a2443df0496b30d9c418987be6.pdf",
        "pages": 14,
        "sha256": "72e08b247865fd76",
        "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": "ms35774.step",
        "role": "plain",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.92
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "e9d6d740f505b03e5aa0ac826330f9e269344b84656d051f50eb07ac162749eb",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      },
      {
        "file": "ms35774-etched.step",
        "role": "eda",
        "up": "Z",
        "units": "mm",
        "origin": "footprint origin = pad-pattern centre",
        "seat": "z = 0",
        "extents_mm": [
          5.0,
          5.0,
          0.92
        ],
        "zmin_mm": 0.0,
        "centre_offset_mm": 0.0,
        "footprint_binding": "identity",
        "sha256": "47400c6b3e9a853363c2304829d313b6384572023d3b0d4f29c8ed29c9116b4f",
        "checked": "2026-10-22",
        "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
      }
    ]
  }
}