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DRV8434PWPR
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Texas Instruments Stepper Motor Driver, HTSSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
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README.mdadded+66@@ -0,0 +1,66 @@+# DRV8434PWPR++**Texas Instruments** · Stepper Motor Driver · HTSSOP-28++DRV8434PWPR from Texas Instruments, in a HTSSOP-28. 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 | VCP | power_out | Charge pump output; connect an X7R 0.22µF 16V ceramic capacitor between VCP and VM. |+| 2 | VM | power_in | Motor supply voltage, 4.5 V to 48 V for normal DC operation (absolute maximum 50 V); bypass to PGND with two 0.01µF ceramic capacitors (one per pin) and a bulk capacitor rated for VM. |+| 3 | PGND | power_in | Power ground; connect to system ground. |+| 4 | AOUT1 | output | Winding A output; connect to a stepper motor winding. |+| 5 | AOUT1 | output | Winding A output; connect to a stepper motor winding. |+| 6 | AOUT2 | output | Winding A output; connect to a stepper motor winding. |+| 7 | AOUT2 | output | Winding A output; connect to a stepper motor winding. |+| 8 | BOUT2 | output | Winding B output; connect to a stepper motor winding. |+| 9 | BOUT2 | output | Winding B output; connect to a stepper motor winding. |+| 10 | BOUT1 | output | Winding B output; connect to a stepper motor winding. |+| 11 | BOUT1 | output | Winding B output; connect to a stepper motor winding. |+| 12 | PGND | power_in | Power ground; connect to system ground. |+| 13 | VM | power_in | Motor supply voltage, 4.5 V to 48 V for normal DC operation (absolute maximum 50 V); bypass to PGND with the same capacitors as pin 2. |+| 14 | GND | power_in | Device ground; connect to system ground. |+| 15 | DVDD | power_out | Internal 5 V logic regulator output (2 mA maximum external load); bypass to GND with a 0.47µF to 1µF X7R 6.3 V or 10 V ceramic capacitor. |+| 16 | nFAULT | output | Open-drain fault indicator that goes low on a fault and requires an external pull-up to 5 V, 3.3 V or 1.8 V (absolute maximum sink current 10 mA). |+| 17 | VREF | power_in | Current-set reference input with a maximum of 3.3 V; DVDD can be divided down through a resistor divider to supply it. |+| 18 | M0 | input | Microstep mode select (tri-level input) with an internal pull-down resistor. |+| 19 | TOFF | input | Quad-level input that sets the PWM off-time and, in smart tune ripple control mode, the ripple current. |+| 20 | DECAY1 | input | Decay mode select (tri-level input); when Hi-Z, smart tune dynamic decay is selected regardless of DECAY0. |+| 21 | DECAY0 | input | Decay mode select (tri-level input) together with DECAY1. |+| 22 | M1 | input | Microstep mode select (quad-level input). |+| 23 | STEP | input | Step input; each rising edge advances the indexer by one step, with an internal pull-down resistor. |+| 24 | DIR | input | Direction input whose logic level sets the step direction, with an internal pull-down resistor. |+| 25 | ENABLE | input | Logic low disables the outputs, logic high enables them; internally pulled up to DVDD, and it also selects the OCP and OTSD response (latched when Hi-Z, automatic retry when high). |+| 26 | nSLEEP | input | Logic high enables the device and logic low puts it in low-power sleep; internal pull-down, a low pulse clears faults, and it must not be tied to DVDD. |+| 27 | CPL | passive | Charge pump negative switch node; connect a VM-rated X7R 0.022µF ceramic capacitor between CPH and CPL. |+| 28 | CPH | passive | Charge pump switch node; connect a VM-rated X7R 0.022µF ceramic capacitor between CPH and CPL. |+| 29 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |++## Key specifications++| Parameter | Value |+|---|---|+| Manufacturer | Texas Instruments |+| Package | HTSSOP-28 |+| Category | Motor Driver ICs |+| Pins | 29 |++## CAD (KiCad official)++- Symbol: `DRV8434PWPR`+- Footprint: `Package_SO:TSSOP-28-1EP_4.4x9.7mm_P0.65mm_EP2.85x6.7mm`+- 3D model: HTSSOP-28 (KiCad packages3D, STEP)+- 3D model files: `drv8434pwpr-etched.step` / `drv8434pwpr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `drv8434pwpr.step` / `drv8434pwpr.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/drv8434) (54 pp, sha256 `d73d3e37312bc8d5`, retrieved 2026-10-08, tier: lcsc)+- **Datasheet language:** Chinese. Pin names, descriptions, and specs on this page were extracted and translated to English by ds2sf; the linked PDF is the manufacturer original.+- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-haiku-5-5` (text), consensus `claude-sonnet-5-5` (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/drv8434pwpr-datasheet.pdf)
page.jsonadded+327@@ -0,0 +1,327 @@+{+ "slug": "drv8434pwpr",+ "version": "0.1.0",+ "type": "component",+ "description": "Texas Instruments Stepper Motor Driver, HTSSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",+ "tags": [+ "component",+ "motor driver ics",+ "drv8434pwpr",+ "factory-2.0.0",+ "extractor-text"+ ],+ "dependencies": {},+ "hero": {+ "type": "image",+ "path": "docs/hero.png"+ },+ "files": [+ "page.json",+ "README.md",+ "drv8434pwpr.kicad_sym",+ "drv8434pwpr.kicad_mod",+ "drv8434pwpr.glb",+ "drv8434pwpr.step",+ "drv8434pwpr.lbr",+ "docs/hero.png",+ "docs/drv8434pwpr-datasheet.pdf",+ "viewers/symbol.html",+ "viewers/footprint.html",+ "drv8434pwpr-hero.glb",+ "drv8434pwpr-hero.overlay.json"+ ],+ "component": {+ "mpn": "DRV8434PWPR",+ "manufacturer": "Texas Instruments",+ "package": "HTSSOP-28",+ "pin_count": 29,+ "category": "Motor Driver ICs",+ "subcategory": "Stepper Motor Driver",+ "datasheet": "https://www.ti.com/cn/lit/gpn/drv8434",+ "parts": {+ "symbol": "drv8434pwpr.kicad_sym",+ "footprint": "drv8434pwpr.kicad_mod",+ "model_3d": "drv8434pwpr-hero.glb",+ "model_3d_plain": "drv8434pwpr.glb",+ "model_3d_step": "drv8434pwpr-etched.step",+ "model_3d_step_plain": "drv8434pwpr.step",+ "lbr": "drv8434pwpr.lbr"+ },+ "distributor_links": {+ "lcsc": "C3681245",+ "digikey": "296-DRV8434PWPRTR-ND",+ "mouser": "595-DRV8434PWPR"+ },+ "distributor_check": {+ "checked_at": "2026-10-08T01:02:59Z",+ "source": "Component Ocean /api/assign-pns",+ "digikey": {+ "pn": "296-DRV8434PWPRTR-ND",+ "status": "found",+ "lifecycle": "Active"+ },+ "mouser": {+ "pn": "595-DRV8434PWPR",+ "status": "found"+ }+ },+ "pins": [+ {+ "number": "1",+ "name": "VCP",+ "type": "power_out",+ "description": "Charge pump output; connect an X7R 0.22µF 16V ceramic capacitor between VCP and VM."+ },+ {+ "number": "2",+ "name": "VM",+ "type": "power_in",+ "description": "Motor supply voltage, 4.5 V to 48 V for normal DC operation (absolute maximum 50 V); bypass to PGND with two 0.01µF ceramic capacitors (one per pin) and a bulk capacitor rated for VM."+ },+ {+ "number": "3",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground; connect to system ground."+ },+ {+ "number": "4",+ "name": "AOUT1",+ "type": "output",+ "description": "Winding A output; connect to a stepper motor winding."+ },+ {+ "number": "5",+ "name": "AOUT1",+ "type": "output",+ "description": "Winding A output; connect to a stepper motor winding."+ },+ {+ "number": "6",+ "name": "AOUT2",+ "type": "output",+ "description": "Winding A output; connect to a stepper motor winding."+ },+ {+ "number": "7",+ "name": "AOUT2",+ "type": "output",+ "description": "Winding A output; connect to a stepper motor winding."+ },+ {+ "number": "8",+ "name": "BOUT2",+ "type": "output",+ "description": "Winding B output; connect to a stepper motor winding."+ },+ {+ "number": "9",+ "name": "BOUT2",+ "type": "output",+ "description": "Winding B output; connect to a stepper motor winding."+ },+ {+ "number": "10",+ "name": "BOUT1",+ "type": "output",+ "description": "Winding B output; connect to a stepper motor winding."+ },+ {+ "number": "11",+ "name": "BOUT1",+ "type": "output",+ "description": "Winding B output; connect to a stepper motor winding."+ },+ {+ "number": "12",+ "name": "PGND",+ "type": "power_in",+ "description": "Power ground; connect to system ground."+ },+ {+ "number": "13",+ "name": "VM",+ "type": "power_in",+ "description": "Motor supply voltage, 4.5 V to 48 V for normal DC operation (absolute maximum 50 V); bypass to PGND with the same capacitors as pin 2."+ },+ {+ "number": "14",+ "name": "GND",+ "type": "power_in",+ "description": "Device ground; connect to system ground."+ },+ {+ "number": "15",+ "name": "DVDD",+ "type": "power_out",+ "description": "Internal 5 V logic regulator output (2 mA maximum external load); bypass to GND with a 0.47µF to 1µF X7R 6.3 V or 10 V ceramic capacitor."+ },+ {+ "number": "16",+ "name": "nFAULT",+ "type": "output",+ "description": "Open-drain fault indicator that goes low on a fault and requires an external pull-up to 5 V, 3.3 V or 1.8 V (absolute maximum sink current 10 mA)."+ },+ {+ "number": "17",+ "name": "VREF",+ "type": "power_in",+ "description": "Current-set reference input with a maximum of 3.3 V; DVDD can be divided down through a resistor divider to supply it."+ },+ {+ "number": "18",+ "name": "M0",+ "type": "input",+ "description": "Microstep mode select (tri-level input) with an internal pull-down resistor."+ },+ {+ "number": "19",+ "name": "TOFF",+ "type": "input",+ "description": "Quad-level input that sets the PWM off-time and, in smart tune ripple control mode, the ripple current."+ },+ {+ "number": "20",+ "name": "DECAY1",+ "type": "input",+ "description": "Decay mode select (tri-level input); when Hi-Z, smart tune dynamic decay is selected regardless of DECAY0."+ },+ {+ "number": "21",+ "name": "DECAY0",+ "type": "input",+ "description": "Decay mode select (tri-level input) together with DECAY1."+ },+ {+ "number": "22",+ "name": "M1",+ "type": "input",+ "description": "Microstep mode select (quad-level input)."+ },+ {+ "number": "23",+ "name": "STEP",+ "type": "input",+ "description": "Step input; each rising edge advances the indexer by one step, with an internal pull-down resistor."+ },+ {+ "number": "24",+ "name": "DIR",+ "type": "input",+ "description": "Direction input whose logic level sets the step direction, with an internal pull-down resistor."+ },+ {+ "number": "25",+ "name": "ENABLE",+ "type": "input",+ "description": "Logic low disables the outputs, logic high enables them; internally pulled up to DVDD, and it also selects the OCP and OTSD response (latched when Hi-Z, automatic retry when high)."+ },+ {+ "number": "26",+ "name": "nSLEEP",+ "type": "input",+ "description": "Logic high enables the device and logic low puts it in low-power sleep; internal pull-down, a low pulse clears faults, and it must not be tied to DVDD."+ },+ {+ "number": "27",+ "name": "CPL",+ "type": "passive",+ "description": "Charge pump negative switch node; connect a VM-rated X7R 0.022µF ceramic capacitor between CPH and CPL."+ },+ {+ "number": "28",+ "name": "CPH",+ "type": "passive",+ "description": "Charge pump switch node; connect a VM-rated X7R 0.022µF ceramic capacitor between CPH and CPL."+ },+ {+ "number": "29",+ "name": "EP",+ "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-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 HTSSOP exposed thermal PAD (PowerPAD) is listed in the table with no pin number ('-'); it is omi; The datasheet table gives CPH and CPL type as '—' (power). They are charge pump switch and flying-ca; DVDD is the internal regulator output, typed power_out. The datasheet table just says 'power'.",+ "exposed pad 29 added from the footprint"+ ],+ "pages_sent": 32,+ "cost_usd": 0.1396,+ "at": "2026-10-08T01:02:42"+ },+ "datasheet": {+ "url": "https://www.ti.com/cn/lit/gpn/drv8434",+ "pages": 54,+ "sha256": "d73d3e37312bc8d5",+ "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": "drv8434pwpr.step",+ "role": "plain",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.2,+ 9.7,+ 1.05+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "ff242f1d3be9d09e7f929707a2c5b1ee974a4f882053b04bcdb1cd2cb21223ef",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ },+ {+ "file": "drv8434pwpr-etched.step",+ "role": "eda",+ "up": "Z",+ "units": "mm",+ "origin": "footprint origin = pad-pattern centre",+ "seat": "z = 0",+ "extents_mm": [+ 7.2,+ 9.7,+ 1.05+ ],+ "zmin_mm": 0,+ "centre_offset_mm": 0,+ "footprint_binding": "identity",+ "sha256": "ee013f557c4b27a32feb81ad6ae6f7867b4ed8a083f961b6f02077d55a6438ff",+ "checked": "2026-10-08",+ "checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"+ }+ ]+ },+ "visibility": "public",+ "org": "adom",+ "author": {+ "name": "Ray",+ "email": "[email protected]"+ }+}