component
UC2637DWTR
Public Made by Adomby adom
Texas Instruments Brushed DC Motor Drivers, SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+56@@ -0,0 +1,56 @@+# UC2637DWTR++**Texas Instruments** · Brushed DC Motor Drivers · SOIC-20++UC2637DWTR from Texas Instruments, in a SOIC-20. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.++## Pinout++| Pin | Name | Type | Function |+|---|---|---|---|+| 1 | +VTH | input | Upper oscillator threshold voltage, accepting +VS-2V to -VS+2V input range with up to 10µA bias current. |+| 2 | CT | passive | External timing capacitor connection for oscillator frequency adjustment. |+| 3 | -VTH | input | Lower oscillator threshold voltage, accepting +VS-2V to -VS+2V input range with up to 0.5µA bias current. |+| 4 | AOUT | output | PWM output driver A, sourcing/sinking 100mA steady-state or 500mA pulsed maximum, output voltage 12-13.5V high or -14.5 to -13V low. |+| 5 | -VS | power_in | Negative supply voltage input, rated -2.5V to -20V absolute maximum. |+| 6 | N/C | unconnected | No internal connection. |+| 7 | +VS | power_in | Positive supply voltage input, rated +2.5V to +20V absolute maximum. |+| 8 | BOUT | output | PWM output driver B, sourcing/sinking 100mA steady-state or 500mA pulsed maximum, output voltage 12-13.5V high or -14.5 to -13V low. |+| 9 | +BIN | input | Positive input to PWM comparator B for pulse width control, common mode range -VS+1V to +VS-2V. |+| 10 | -BIN | input | Negative input to PWM comparator B for pulse width control, common mode range -VS+1V to +VS-2V. |+| 11 | -AIN | input | Negative input to PWM comparator A for pulse width control, common mode range -VS+1V to +VS-2V. |+| 12 | +AIN | input | Positive input to PWM comparator A for pulse width control, common mode range -VS+1V to +VS-2V. |+| 13 | +C/L | input | Positive current limit input for pulse-by-pulse current limiting, 200mV offset threshold at 25°C, common mode -VS to +VS-3V. |+| 14 | -C/L | input | Negative current limit input for pulse-by-pulse current limiting, 200mV offset threshold at 25°C, common mode -VS to +VS-3V. |+| 15 | SHUTDOWN | input | Shutdown control input with -2.5V temperature-compensated threshold; pulling below this disables output drivers with 40mV hysteresis. |+| 16 | N/C | unconnected | No internal connection. |+| 17 | +E/A | output | Error amplifier output, sourcing 5-11mA or sinking 20-50mA maximum, output voltage 13-13.6V high or -14.8 to -13V low. |+| 18 | -E/A | passive | Oscillator charging current terminal for internal current source, maximum charging current -2mA absolute maximum. |+| 19 | E/A OUTPUT | output | Error amplifier output connection in SOIC-20 variant. |+| 20 | ISET | passive | Oscillator current setting terminal, internally driven by buffered +VTH voltage for frequency control. |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | SOIC-20 |+| Category | Motor Driver ICs |+| Pins | 20 |++## CAD (KiCad official)++- Symbol: `UC2637DWTR`+- Footprint: `Package_SO:SOIC-20W_7.5x12.8mm_P1.27mm`+- 3D model: SOIC-20 (KiCad packages3D, STEP)+- 3D model files: `uc2637dwtr-etched.step` / `uc2637dwtr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `uc2637dwtr.step` / `uc2637dwtr.glb` are the bare package body.++## Provenance++Data extracted from the manufacturer datasheet, not a distributor listing:++- **Datasheet:** [Texas Instruments datasheet](https://www.ti.com/cn/lit/gpn/uc3637) (19 pp, sha256 `50b7541e6f18a862`, retrieved 2026-09-26, tier: lcsc)+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.2`, primary `claude-haiku-4-5-20251001` (text), consensus `claude-sonnet-4-6` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.+- **CAD:** KiCad official libraries (CC-BY-SA 4.0).++[Datasheet PDF](docs/uc2637dwtr-datasheet.pdf)
page.jsonadded+230@@ -0,0 +1,230 @@+{+ "slug": "uc2637dwtr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Brushed DC Motor Drivers, SOIC-20. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "motor driver ics",+ "uc2637dwtr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "uc2637dwtr.kicad_sym",+ "uc2637dwtr.kicad_mod",+ "uc2637dwtr.glb",+ "uc2637dwtr.step",+ "uc2637dwtr.lbr",+ "docs/hero.png",+ "docs/uc2637dwtr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html"+ ],+ "component": {+ "mpn": "UC2637DWTR",+ "manufacturer": "Texas Instruments",+ "package": "SOIC-20",+ "pin_count": 20,+ "category": "Motor Driver ICs",+ "subcategory": "Brushed DC Motor Drivers",+ "datasheet": "https://www.ti.com/cn/lit/gpn/uc3637",+ "parts": {+ "symbol": "uc2637dwtr.kicad_sym",+ "footprint": "uc2637dwtr.kicad_mod",+ "model_3d": "uc2637dwtr-etched.glb",+ "model_3d_plain": "uc2637dwtr.glb",+ "model_3d_step": "uc2637dwtr-etched.step",+ "model_3d_step_plain": "uc2637dwtr.step",+ "lbr": "uc2637dwtr.lbr"+ },+ "distributor_links": {+ "lcsc": "C3681183",+ "digikey": "UC2637DWTR-ND",+ "mouser": "595-UC2637DWTR"+ },+ "distributor_check": {+ "checked_at": "2026-09-26T23:17:55Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "UC2637DWTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-UC2637DWTR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "+VTH",+ "type": "input",+ "description": "Upper oscillator threshold voltage, accepting +VS-2V to -VS+2V input range with up to 10µA bias current."+ },+ {+ "number": "2",+ "name": "CT",+ "type": "passive",+ "description": "External timing capacitor connection for oscillator frequency adjustment."+ },+ {+ "number": "3",+ "name": "-VTH",+ "type": "input",+ "description": "Lower oscillator threshold voltage, accepting +VS-2V to -VS+2V input range with up to 0.5µA bias current."+ },+ {+ "number": "4",+ "name": "AOUT",+ "type": "output",+ "description": "PWM output driver A, sourcing/sinking 100mA steady-state or 500mA pulsed maximum, output voltage 12-13.5V high or -14.5 to -13V low."+ },+ {+ "number": "5",+ "name": "-VS",+ "type": "power_in",+ "description": "Negative supply voltage input, rated -2.5V to -20V absolute maximum."+ },+ {+ "number": "6",+ "name": "N/C",+ "type": "unconnected",+ "description": "No internal connection."+ },+ {+ "number": "7",+ "name": "+VS",+ "type": "power_in",+ "description": "Positive supply voltage input, rated +2.5V to +20V absolute maximum."+ },+ {+ "number": "8",+ "name": "BOUT",+ "type": "output",+ "description": "PWM output driver B, sourcing/sinking 100mA steady-state or 500mA pulsed maximum, output voltage 12-13.5V high or -14.5 to -13V low."+ },+ {+ "number": "9",+ "name": "+BIN",+ "type": "input",+ "description": "Positive input to PWM comparator B for pulse width control, common mode range -VS+1V to +VS-2V."+ },+ {+ "number": "10",+ "name": "-BIN",+ "type": "input",+ "description": "Negative input to PWM comparator B for pulse width control, common mode range -VS+1V to +VS-2V."+ },+ {+ "number": "11",+ "name": "-AIN",+ "type": "input",+ "description": "Negative input to PWM comparator A for pulse width control, common mode range -VS+1V to +VS-2V."+ },+ {+ "number": "12",+ "name": "+AIN",+ "type": "input",+ "description": "Positive input to PWM comparator A for pulse width control, common mode range -VS+1V to +VS-2V."+ },+ {+ "number": "13",+ "name": "+C/L",+ "type": "input",+ "description": "Positive current limit input for pulse-by-pulse current limiting, 200mV offset threshold at 25°C, common mode -VS to +VS-3V."+ },+ {+ "number": "14",+ "name": "-C/L",+ "type": "input",+ "description": "Negative current limit input for pulse-by-pulse current limiting, 200mV offset threshold at 25°C, common mode -VS to +VS-3V."+ },+ {+ "number": "15",+ "name": "SHUTDOWN",+ "type": "input",+ "description": "Shutdown control input with -2.5V temperature-compensated threshold; pulling below this disables output drivers with 40mV hysteresis."+ },+ {+ "number": "16",+ "name": "N/C",+ "type": "unconnected",+ "description": "No internal connection."+ },+ {+ "number": "17",+ "name": "+E/A",+ "type": "output",+ "description": "Error amplifier output, sourcing 5-11mA or sinking 20-50mA maximum, output voltage 13-13.6V high or -14.8 to -13V low."+ },+ {+ "number": "18",+ "name": "-E/A",+ "type": "passive",+ "description": "Oscillator charging current terminal for internal current source, maximum charging current -2mA absolute maximum."+ },+ {+ "number": "19",+ "name": "E/A OUTPUT",+ "type": "output",+ "description": "Error amplifier output connection in SOIC-20 variant."+ },+ {+ "number": "20",+ "name": "ISET",+ "type": "passive",+ "description": "Oscillator current setting terminal, internally driven by buffered +VTH voltage for frequency control."+ }+ ],+ "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": [+ "extractor flagged: Pin 17 labeled '+E/A' but absolute max ratings specify 'Error Amplifier Output Current'; pins 17 and; Pin 18 labeled '-E/A' (suggesting error amplifier related) but absolute max ratings specify 'Oscilla"+ ],+ "pages_sent": 19,+ "cost_usd": 0.4268,+ "at": "2026-09-26T23:17:35"+ },+ "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": {+ "symbol": "viewers/symbol.html",+ "footprint": "viewers/footprint.html"+ }+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}