component
DRV8434APWPR
Public Made by Adomby adom
Texas Instruments Stepper Motor Driver, HTSSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "drv8434apwpr",
"title": "DRV8434APWPR",
"brief": "Texas Instruments Stepper Motor Driver, HTSSOP-28. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.",
"version": "0.1.0",
"license": "CC-BY-SA-4.0",
"tags": [
"component",
"motor driver ics",
"drv8434apwpr",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "DRV8434APWPR",
"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/drv8434a",
"parts": {
"symbol": "drv8434apwpr.kicad_sym",
"footprint": "drv8434apwpr.kicad_mod",
"model_3d": "drv8434apwpr-hero.glb",
"model_3d_plain": "drv8434apwpr-etched.glb",
"model_3d_step": "drv8434apwpr-etched.step",
"model_3d_step_plain": "drv8434apwpr.step",
"lbr": "drv8434apwpr.lbr"
},
"distributor_links": {
"lcsc": "C3681066",
"digikey": "296-DRV8434APWPRTR-ND",
"mouser": "595-DRV8434APWPR"
},
"distributor_check": {
"checked_at": "2026-10-18T02:33:04Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-DRV8434APWPRTR-ND",
"status": "found"
},
"mouser": {
"pn": "595-DRV8434APWPR",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VCP",
"type": "power_out",
"description": "Charge-pump output, connected to VM through an X7R 0.22µF 16V ceramic capacitor."
},
{
"number": "2",
"name": "VM",
"type": "power_in",
"description": "Motor supply voltage, operating range 4.5 V to 48 V, bypassed to PGND with two 0.01µF ceramic capacitors (one per pin) and a bulk capacitor rated above VM; absolute maximum 50 V."
},
{
"number": "3",
"name": "PGND",
"type": "power_in",
"description": "Power ground, connected to system ground."
},
{
"number": "4",
"name": "AOUT1",
"type": "output",
"description": "Winding A output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
},
{
"number": "5",
"name": "AOUT1",
"type": "output",
"description": "Winding A output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
},
{
"number": "6",
"name": "AOUT2",
"type": "output",
"description": "Winding A output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
},
{
"number": "7",
"name": "AOUT2",
"type": "output",
"description": "Winding A output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
},
{
"number": "8",
"name": "BOUT2",
"type": "output",
"description": "Winding B output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
},
{
"number": "9",
"name": "BOUT2",
"type": "output",
"description": "Winding B output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
},
{
"number": "10",
"name": "BOUT1",
"type": "output",
"description": "Winding B output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
},
{
"number": "11",
"name": "BOUT1",
"type": "output",
"description": "Winding B output connected to the stepper motor winding; continuous node voltage limited to -1 V to VM + 1 V."
},
{
"number": "12",
"name": "PGND",
"type": "power_in",
"description": "Power ground, connected to system ground."
},
{
"number": "13",
"name": "VM",
"type": "power_in",
"description": "Motor supply voltage, operating range 4.5 V to 48 V, bypassed to PGND with two 0.01µF ceramic capacitors (one per pin) and a bulk capacitor rated above VM; absolute maximum 50 V."
},
{
"number": "14",
"name": "GND",
"type": "power_in",
"description": "Device ground, connected to system ground."
},
{
"number": "15",
"name": "DVDD",
"type": "power_out",
"description": "Internal logic regulator output, nominally 5 V with up to 2 mA load, bypassed to GND with a 0.47µF to 1µF X7R ceramic capacitor rated 6.3 V or 10 V."
},
{
"number": "16",
"name": "nFAULT",
"type": "output",
"description": "Open-drain fault output, pulled low when a fault is detected and requires an external pull-up; sink current limited to 10 mA."
},
{
"number": "17",
"name": "VREF",
"type": "power_in",
"description": "Current-set reference input, maximum 3.3 V; can be driven from DVDD through a resistor divider."
},
{
"number": "18",
"name": "M0",
"type": "input",
"description": "Three-level microstep mode setting input that selects the step mode per Table 7-2."
},
{
"number": "19",
"name": "STL_REP",
"type": "output",
"description": "Open-drain stall report output that requires a pull-up resistor, goes high on stall and low on successful learning; can also be pulled low externally to disable stall reporting; sink current limited to 10 mA."
},
{
"number": "20",
"name": "TRQ_CNT/STL_TH",
"type": "bidirectional",
"description": "Torque-count analog output or stall-threshold analog input depending on STL_MODE; requires a 1 nF capacitor to GND."
},
{
"number": "21",
"name": "STL_MODE",
"type": "input",
"description": "Four-level input that programs the stall detection mode; a 330 kΩ resistor to GND disables stall detection."
},
{
"number": "22",
"name": "M1",
"type": "input",
"description": "Four-level microstep mode setting input that selects the step mode per Table 7-2."
},
{
"number": "23",
"name": "STEP",
"type": "input",
"description": "Step input; each rising edge advances the translator one step, with an operating frequency up to 500 kHz and an internal pull-down."
},
{
"number": "24",
"name": "DIR",
"type": "input",
"description": "Direction input whose logic level sets the step direction, with an internal pull-down."
},
{
"number": "25",
"name": "ENABLE",
"type": "input",
"description": "Logic low disables the outputs and logic high enables them; a high-impedance level enables 8x torque-count scaling."
},
{
"number": "26",
"name": "nSLEEP",
"type": "input",
"description": "Sleep mode control, logic high enables the device and logic low enters low-power sleep; a low pulse clears latched faults; internal pull-down; must not be connected to DVDD."
},
{
"number": "27",
"name": "CPL",
"type": "passive",
"description": "Charge-pump negative switch node, connected to CPH through an X7R 0.022µF ceramic capacitor rated for VM."
},
{
"number": "28",
"name": "CPH",
"type": "passive",
"description": "Charge-pump switch node, connected to CPL through an X7R 0.022µF ceramic capacitor rated for VM."
},
{
"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: Pin numbers and names were taken from the HTSSOP column of the pin-function table (pages 3-4), since; The exposed thermal pad has no number in the datasheet table ('PAD'). It is listed as 'PAD' and type; CPH and CPL are charge-pump flying-capacitor switch nodes that the table labels only as power; they ",
"exposed pad 29 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 38,
"cost_usd": 0.148,
"at": "2026-10-18T02:29:43"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/drv8434a",
"pages": 52,
"sha256": "662fdbf7dfc53054",
"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": "drv8434apwpr.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": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "drv8434apwpr-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": "7c4bc4ba0a8ca9a98af0b42fa7fe45fd8d2e7ff23e0a9ea30e34f2dd681feca7",
"checked": "2026-10-18",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "HTSSOP-28",
"Category": "Motor Driver ICs",
"Pins": "29"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "662fdbf7dfc5305422b0c18a5303ac0e99cdf57cc7cdd0238fd324fa830b0a1f",
"rows": [
{
"name": "Motor supply voltage (VM, DC operation)",
"symbol": "VVM",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 48,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Logic level input voltage",
"symbol": "VI",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VREF voltage",
"symbol": "VVREF",
"kind": "recommended_operating",
"unit": "V",
"min": 0.05,
"typ": null,
"max": 3.3,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Applied STEP signal frequency",
"symbol": "fSTEP",
"kind": "recommended_operating",
"unit": "kHz",
"min": 0,
"typ": null,
"max": 500,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Motor full-scale current (xOUTx)",
"symbol": "IFS",
"kind": "recommended_operating",
"unit": "A",
"min": 0,
"typ": null,
"max": 2.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Motor RMS current (xOUTx)",
"symbol": "Irms",
"kind": "recommended_operating",
"unit": "A",
"min": 0,
"typ": null,
"max": 1.8,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Operating ambient temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Operating junction temperature",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VM operating supply current",
"symbol": "IVM",
"kind": "electrical",
"unit": "mA",
"min": null,
"typ": 5,
"max": 6.5,
"conditions": "ENABLE = 1, nSLEEP = 1, no motor load",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VM sleep mode supply current",
"symbol": "IVMQ",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 2,
"max": 4,
"conditions": "nSLEEP = 0",
"source_page": 7,
"source": "datasheet"
},
{
"name": "nSLEEP reset pulse (clear faults)",
"symbol": "tRESET",
"kind": "timing",
"unit": "μs",
"min": 20,
"typ": null,
"max": 40,
"conditions": "nSLEEP low to clear fault",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Wake-up time",
"symbol": "tWAKE",
"kind": "timing",
"unit": "ms",
"min": 0.8,
"typ": null,
"max": 1.2,
"conditions": "nSLEEP = 1 to output transition",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Turn-on time",
"symbol": "tON",
"kind": "timing",
"unit": "ms",
"min": 0.8,
"typ": null,
"max": 1.2,
"conditions": "VM > UVLO to output transition",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Internal regulator voltage (DVDD)",
"symbol": "VDVDD",
"kind": "electrical",
"unit": "V",
"min": 4.75,
"typ": 5,
"max": 5.25,
"conditions": "No external load, 6V < VVM < 48V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Internal regulator voltage (DVDD) at low VM",
"symbol": "VDVDD",
"kind": "electrical",
"unit": "V",
"min": 4.2,
"typ": null,
"max": 4.35,
"conditions": "No external load, VVM = 4.5V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Logic input low voltage (STEP, DIR, nSLEEP)",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.6,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Logic input high voltage (STEP, DIR, nSLEEP)",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 1.5,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Logic input low current (STEP, DIR, nSLEEP)",
"symbol": "IIL",
"kind": "electrical",
"unit": "μA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "VIN = 0V",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Three-level input low voltage (M0, ENABLE)",
"symbol": "VI1",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.6,
"conditions": "Connected to GND",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Three-level input high-Z voltage (M0, ENABLE)",
"symbol": "VI2",
"kind": "electrical",
"unit": "V",
"min": 1.8,
"typ": 2,
"max": 2.2,
"conditions": "High-impedance state",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Three-level input high voltage (M0, ENABLE)",
"symbol": "VI3",
"kind": "electrical",
"unit": "V",
"min": 2.7,
"typ": null,
"max": 5.5,
"conditions": "Connected to DVDD",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Four-level input low voltage (M1, STL_MODE)",
"symbol": "VI1",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.6,
"conditions": "Connected to GND",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Four-level input 330kΩ state voltage (M1, STL_MODE)",
"symbol": "VI2",
"kind": "electrical",
"unit": "V",
"min": 1,
"typ": 1.25,
"max": 1.4,
"conditions": "330kΩ ±5% to GND",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Four-level input high-Z voltage (M1, STL_MODE)",
"symbol": "VI3",
"kind": "electrical",
"unit": "V",
"min": 1.8,
"typ": 2,
"max": 2.2,
"conditions": "High-impedance state",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Four-level input high voltage (M1, STL_MODE)",
"symbol": "VI4",
"kind": "electrical",
"unit": "V",
"min": 2.7,
"typ": null,
"max": 5.5,
"conditions": "Connected to DVDD",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Control output logic high leakage current (nFAULT, STL_REP)",
"symbol": "IOH",
"kind": "electrical",
"unit": "μA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "",
"source_page": 8,
"source": "datasheet"
},
{
"name": "STL_REP input low voltage",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.6,
"conditions": "STL_REP pulled low to disable stall reporting",
"source_page": 8,
"source": "datasheet"
},
{
"name": "STL_REP input high voltage",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 1.5,
"typ": null,
"max": 5.5,
"conditions": "STL_REP pulled high to enable stall reporting",
"source_page": 8,
"source": "datasheet"
},
{
"name": "High-side FET on-resistance",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 165,
"max": 200,
"conditions": "TJ = 25°C, IO = -1A",
"source_page": 8,
"source": "datasheet"
},
{
"name": "High-side FET on-resistance",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 250,
"max": 300,
"conditions": "TJ = 125°C, IO = -1A",
"source_page": 8,
"source": "datasheet"
},
{
"name": "High-side FET on-resistance",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 280,
"max": 350,
"conditions": "TJ = 150°C, IO = -1A",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Low-side FET on-resistance",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 165,
"max": 200,
"conditions": "TJ = 25°C, IO = 1A",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Low-side FET on-resistance",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 250,
"max": 300,
"conditions": "TJ = 125°C, IO = 1A",
"source_page": 8,
"source": "datasheet"
},
{
"name": "Low-side FET on-resistance",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
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