component
UC3637DW
Public Made by Adomby adom
Texas Instruments Motor Driver ICs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
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"slug": "uc3637dw",
"title": "UC3637DW",
"brief": "Texas Instruments Motor Driver ICs, SOIC-20-300mil. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
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"power supply chip",
"uc3637dw",
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],
"component": {
"mpn": "UC3637DW",
"manufacturer": "Texas Instruments",
"package": "SOIC-20-300mil",
"pin_count": 20,
"category": "Power Supply Chip",
"subcategory": "Motor Driver ICs",
"datasheet": "https://www.ti.com/cn/lit/gpn/uc3637",
"parts": {
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"lbr": "uc3637dw.lbr"
},
"distributor_links": {
"lcsc": "C1523909",
"digikey": "296-2508-5-ND",
"mouser": "595-UC3637DW"
},
"distributor_check": {
"checked_at": "2026-10-11T03:49:38Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-2508-5-ND",
"status": "found",
"lifecycle": "Active"
},
"mouser": {
"pn": "595-UC3637DW",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "+VTH",
"type": "input",
"description": "Sets the oscillator upper threshold voltage, buffered internally and also applied to ISET; input range is +VS-2 to -VS+2."
},
{
"number": "2",
"name": "CT",
"type": "passive",
"description": "Oscillator timing capacitor connection that sets the triangle waveform frequency and amplitude with RT."
},
{
"number": "3",
"name": "-VTH",
"type": "input",
"description": "Sets the oscillator lower threshold voltage."
},
{
"number": "4",
"name": "AOUT",
"type": "output",
"description": "PWM output driver A, sources or sinks 100mA steady state and up to 500mA pulsed."
},
{
"number": "5",
"name": "-VS",
"type": "power_in",
"description": "Negative supply, within the ±2.5V to ±20V supply range; RT may be referenced here."
},
{
"number": "6",
"name": "+VS",
"type": "power_in",
"description": "Positive supply, within the ±2.5V to ±20V supply range; undervoltage lockout start threshold is measured here with respect to -VS."
},
{
"number": "7",
"name": "BOUT",
"type": "output",
"description": "PWM output driver B, sources or sinks 100mA steady state and up to 500mA pulsed."
},
{
"number": "8",
"name": "+BIN",
"type": "input",
"description": "Uncommitted non-inverting input of PWM comparator B."
},
{
"number": "9",
"name": "-BIN",
"type": "input",
"description": "Uncommitted inverting input of PWM comparator B."
},
{
"number": "10",
"name": "N/C",
"type": "unconnected",
"description": "No internal connection."
},
{
"number": "11",
"name": "N/C",
"type": "unconnected",
"description": "No internal connection."
},
{
"number": "12",
"name": "-AIN",
"type": "input",
"description": "Uncommitted inverting input of PWM comparator A."
},
{
"number": "13",
"name": "+AIN",
"type": "input",
"description": "Uncommitted non-inverting input of PWM comparator A."
},
{
"number": "14",
"name": "+C/L",
"type": "input",
"description": "Non-inverting current limit amplifier input with internal 200mV offset; common mode range is -VS to +VS-3V."
},
{
"number": "15",
"name": "-C/L",
"type": "input",
"description": "Inverting current limit amplifier input for pulse-by-pulse current limiting."
},
{
"number": "16",
"name": "SHUTDOWN",
"type": "input",
"description": "Shutdown input with 2.5V temperature compensated threshold; outputs are held low in shutdown and it can program an external undervoltage lockout."
},
{
"number": "17",
"name": "+E/A",
"type": "input",
"description": "Non-inverting input of the error amplifier; common mode range is -VS+2V to +VS."
},
{
"number": "18",
"name": "-E/A",
"type": "input",
"description": "Inverting input of the error amplifier."
},
{
"number": "19",
"name": "E/A OUTPUT",
"type": "output",
"description": "Error amplifier output with 15V/µs slew rate; absolute maximum output current is ±20mA."
},
{
"number": "20",
"name": "ISET",
"type": "passive",
"description": "Current set terminal for the oscillator, where RT develops the capacitor charging current from the buffered +VTH voltage; absolute maximum charging current is -2mA."
}
],
"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+vision",
"consensus_model": "claude-opus-5-5",
"consensus": "agreed",
"guards": "pin_guards 0.1: passed",
"guard_notes": [
"extractor flagged: In the SOIC-20 DW diagram, the E/A OUTPUT pin is printed as '18', which duplicates -E/A. I took it a; The datasheet doesn't state a pin function type for CT and ISET. I classed them as passive because t; Notes 4 and 5 and the DIL-18 pinout use different pin numbers from the SOIC-20 diagram. The SOIC-20 ",
"vision extraction: provenance cannot be text-verified; needs consensus"
],
"pages_sent": 19,
"cost_usd": 0.4132,
"at": "2026-10-11T03:49:17"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/uc3637",
"pages": 19,
"sha256": "50b7541e6f18a862",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 20,
"described": 20,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
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"footprint": "viewers/footprint.html"
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"up": "Z",
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"seat": "z = 0",
"extents_mm": [
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"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "59a10b341e6972b31d81802a048060326da627d8b92dcf4263064f4f62ec808e",
"checked": "2026-10-11",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
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"sha256": "5cb7b20892348c995fd5d557b8508fe6b03593f7e1d1cf3db8463ec8171238b1",
"checked": "2026-10-11",
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}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "SOIC-20-300mil",
"Category": "Power Supply Chip",
"Pins": "20"
}
},
"variants": [],
"sections": [
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],
"discovery_triggers": [
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],
"discovery_pitch": "UC3637DW (Texas Instruments) component page: datasheet pinout, KiCad symbol, footprint and 3D.",
"author": {
"name": "Ray",
"email": "[email protected]"
},
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