UC3625DWTR

{
  "slug": "uc3625dwtr",
  "version": "0.1.0",
  "type": "component",
  "description": "Texas Instruments Brushless DC (BLDC) Motor Driver, SOIC-28-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
  "tags": [
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    "motor driver ics",
    "uc3625dwtr",
    "factory-2.0.0",
    "extractor-text"
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  "component": {
    "mpn": "UC3625DWTR",
    "manufacturer": "Texas Instruments",
    "package": "SOIC-28-300mil",
    "pin_count": 28,
    "category": "Motor Driver ICs",
    "subcategory": "Brushless DC (BLDC) Motor Driver",
    "datasheet": "https://www.ti.com/cn/lit/gpn/uc2625",
    "parts": {
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    },
    "distributor_links": {
      "lcsc": "C2150737",
      "digikey": "296-UC3625DWTR-ND",
      "mouser": "595-UC3625DWTR"
    },
    "distributor_check": {
      "checked_at": "2026-10-11T14:47:12Z",
      "source": "Component Ocean /api/assign-pns",
      "digikey": {
        "pn": "296-UC3625DWTR-ND",
        "status": "found",
        "lifecycle": "Active"
      },
      "mouser": {
        "pn": "595-UC3625DWTR",
        "status": "found"
      }
    },
    "pins": [
      {
        "number": "1",
        "name": "E/A OUT",
        "type": "output",
        "description": "Error amplifier output, which is compensated for unity-gain stability and may be tied to E/A IN(-) for feedback; it can be driven externally when the error amplifier is biased off."
      },
      {
        "number": "2",
        "name": "VREF",
        "type": "power_out",
        "description": "Regulated 5 V reference for Hall-effect sensors and speed control circuitry; operation above 30 mA is not advised and it should be bypassed with at least 0.1 µF to ground."
      },
      {
        "number": "3",
        "name": "ISENSE",
        "type": "output",
        "description": "Current sense amplifier output, equal to 2.5 V + 2 × ABS(ISENSE1 − ISENSE2), and it is best filtered by a capacitor to ground for spikes."
      },
      {
        "number": "4",
        "name": "ISENSE1",
        "type": "input",
        "description": "Interchangeable differential current sense input; the differential signal may be as high as ±0.5 V before saturation, and the peak-current threshold is about 0.2 V / RSENSE."
      },
      {
        "number": "5",
        "name": "ISENSE2",
        "type": "input",
        "description": "Interchangeable differential current sense input; the differential signal may be as high as ±0.5 V before saturation, and the overcurrent threshold is about 0.3 V / RSENSE."
      },
      {
        "number": "6",
        "name": "DIR",
        "type": "input",
        "description": "Direction input that is loaded into a direction latch; the direction latch is transparent only while SPEED-IN is below 250 mV, and DIR thresholds are 0.8 V to 2.0 V."
      },
      {
        "number": "7",
        "name": "SPEED-IN",
        "type": "input",
        "description": "Speed threshold input (about 250 mV) that inhibits direction changes above that level; it can be connected to TACH-OUT through a filter."
      },
      {
        "number": "8",
        "name": "H1",
        "type": "input",
        "description": "Hall shaft position sensor input with hysteresis comparator and pull-up; it is TTL compatible, and rise and fall times must be shorter than 20 µs."
      },
      {
        "number": "9",
        "name": "H2",
        "type": "input",
        "description": "Hall shaft position sensor input with hysteresis comparator and pull-up; it is TTL compatible, and rise and fall times must be shorter than 20 µs."
      },
      {
        "number": "10",
        "name": "H3",
        "type": "input",
        "description": "Hall shaft position sensor input with hysteresis comparator and pull-up; it is TTL compatible, and rise and fall times must be shorter than 20 µs."
      },
      {
        "number": "11",
        "name": "PWR VCC",
        "type": "power_in",
        "description": "Supply pin that carries the current sourced by the PD outputs; it can be current limited with a resistor when driving Darlington bases directly."
      },
      {
        "number": "12",
        "name": "PDC",
        "type": "output",
        "description": "Low-side totem-pole driver output (up to 0.5 A peak) that turns a low-side power device on when high."
      },
      {
        "number": "13",
        "name": "PDB",
        "type": "output",
        "description": "Low-side totem-pole driver output (up to 0.5 A peak) that turns a low-side power device on when high."
      },
      {
        "number": "14",
        "name": "PDA",
        "type": "output",
        "description": "Low-side totem-pole driver output (up to 0.5 A peak) that turns a low-side power device on when high."
      },
      {
        "number": "15",
        "name": "GND",
        "type": "power_in",
        "description": "Ground reference; all thresholds and outputs are referred to this pin except the PD and PU outputs."
      },
      {
        "number": "16",
        "name": "PUC",
        "type": "output",
        "description": "High-side open-collector driver output (50 V rating) that is active low and pulls low to command a high-side device on."
      },
      {
        "number": "17",
        "name": "PUB",
        "type": "output",
        "description": "High-side open-collector driver output (50 V rating) that is active low and pulls low to command a high-side device on."
      },
      {
        "number": "18",
        "name": "PUA",
        "type": "output",
        "description": "High-side open-collector driver output (50 V rating) that is active low and pulls low to command a high-side device on."
      },
      {
        "number": "19",
        "name": "VCC",
        "type": "power_in",
        "description": "Supply input for 10 V to 18 V operation with undervoltage lockout keeping all outputs off below 7.5 V; bypass with a 0.1 µF ceramic capacitor."
      },
      {
        "number": "20",
        "name": "TACH-OUT",
        "type": "output",
        "description": "Tachometer output that produces a fixed-width 5 V pulse on each commutation, with an average value proportional to speed."
      },
      {
        "number": "21",
        "name": "RC-BRAKE",
        "type": "input",
        "description": "Brake threshold input (about 1.0 V) that enters brake mode when pulled below it, and that also sets the tachometer pulse width through an RT-CT network."
      },
      {
        "number": "22",
        "name": "QUAD SEL",
        "type": "input",
        "description": "Chopping mode select input: low selects two-quadrant chopping and high selects four-quadrant chopping, with thresholds of 0.8 V to 2.0 V."
      },
      {
        "number": "23",
        "name": "OV-COAST",
        "type": "input",
        "description": "Overvoltage shutdown and coast input with an inhibit threshold of about 1.75 V; it can be driven by TTL, 5 V CMOS, or 12 V CMOS."
      },
      {
        "number": "24",
        "name": "SSTART",
        "type": "bidirectional",
        "description": "Soft-start pin that is discharged by an internal transistor on faults and clamps the error amplifier output; a 51 kΩ resistor from VREF is required to ensure switching."
      },
      {
        "number": "25",
        "name": "RC-OSC",
        "type": "bidirectional",
        "description": "Oscillator timing pin, with ROSC from this pin to VREF and COSC to ground; resistors of 10 kΩ to 100 kΩ, capacitors of 1 nF to 100 nF, and frequency below 500 kHz are recommended."
      },
      {
        "number": "26",
        "name": "PWM IN",
        "type": "input",
        "description": "PWM comparator input compared against E/A OUT; it can be connected to RC-OSC for voltage-mode PWM control."
      },
      {
        "number": "27",
        "name": "E/A IN(-)",
        "type": "input",
        "description": "Error amplifier inverting input, which is not internally committed and can be connected to ISENSE, TACH-OUT through a filter, or an external command voltage."
      },
      {
        "number": "28",
        "name": "E/A IN(+)",
        "type": "input",
        "description": "Error amplifier non-inverting input, which is not internally committed and can be connected to ISENSE, TACH-OUT through a filter, or an external command voltage."
      }
    ],
    "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: The datasheet names E/A OUT, E/A IN(+) and E/A IN(-) but the extracted block diagram and terminal-ta; The terminal table lists 'PDA, PDB, PDC 12, 13, 14' in order, but the block diagram gives 14 PDA, 13; The terminal table lists 'PUA, PUB, PUC 16, 17, 18' in order, but the block diagram gives 18 PUA, 17"
        ],
        "pages_sent": 12,
        "cost_usd": 0.0909,
        "at": "2026-10-11T14:46:54"
      },
      "datasheet": {
        "url": "https://www.ti.com/cn/lit/gpn/uc2625",
        "pages": 25,
        "sha256": "dcf54a877fad8159",
        "source_tier": "lcsc"
      },
      "cad": "KiCad official (CC-BY-SA 4.0)",
      "pins": {
        "total": 28,
        "described": 28,
        "cites_pages": true,
        "refuses_to_fabricate": true
      }
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}