component
DRV8434SRGER
Public Made by Adomby adom
Texas Instruments Stepper Motor Driver, VQFN-24(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
main
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{
"schema_version": 1,
"type": "component",
"slug": "drv8434srger",
"title": "DRV8434SRGER",
"brief": "Texas Instruments Stepper Motor Driver, VQFN-24(4x4). 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",
"drv8434srger",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "DRV8434SRGER",
"manufacturer": "Texas Instruments",
"package": "VQFN-24(4x4)",
"pin_count": 25,
"category": "Motor Driver ICs",
"subcategory": "Stepper Motor Driver",
"datasheet": "https://www.ti.com/cn/lit/gpn/drv8434s",
"parts": {
"symbol": "drv8434srger.kicad_sym",
"footprint": "drv8434srger.kicad_mod",
"model_3d": "drv8434srger-hero.glb",
"model_3d_plain": "drv8434srger-etched.glb",
"model_3d_step": "drv8434srger-etched.step",
"model_3d_step_plain": "drv8434srger.step",
"lbr": "drv8434srger.lbr"
},
"distributor_links": {
"lcsc": "C3681236",
"digikey": "296-DRV8434SRGERTR-ND",
"mouser": "595-DRV8434SRGER"
},
"distributor_check": {
"checked_at": "2026-10-21T00:10:32Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-DRV8434SRGERTR-ND",
"status": "found"
},
"mouser": {
"pn": "595-DRV8434SRGER",
"status": "found"
}
},
"pins": [
{
"number": "1",
"name": "VM",
"type": "power_in",
"description": "Motor supply pin, operating range 4.5 V to 48 V, bypassed to PGND with a 0.01 µF ceramic capacitor rated for VM placed close to the pin and a bulk capacitor rated for VM."
},
{
"number": "2",
"name": "PGND",
"type": "power_in",
"description": "Power ground pin, connect to system ground."
},
{
"number": "3",
"name": "AOUT1",
"type": "output",
"description": "Winding A output, connect to a stepper motor winding; continuous phase-node voltage is limited to -1 V to VM + 1 V."
},
{
"number": "4",
"name": "AOUT2",
"type": "output",
"description": "Winding A output, connect to a stepper motor winding; continuous phase-node voltage is limited to -1 V to VM + 1 V."
},
{
"number": "5",
"name": "BOUT2",
"type": "output",
"description": "Winding B output, connect to a stepper motor winding; continuous phase-node voltage is limited to -1 V to VM + 1 V."
},
{
"number": "6",
"name": "BOUT1",
"type": "output",
"description": "Winding B output, connect to a stepper motor winding; continuous phase-node voltage is limited to -1 V to VM + 1 V."
},
{
"number": "7",
"name": "PGND",
"type": "power_in",
"description": "Power ground pin, connect to system ground."
},
{
"number": "8",
"name": "VM",
"type": "power_in",
"description": "Motor supply pin, operating range 4.5 V to 48 V, bypassed to PGND with a 0.01 µF ceramic capacitor rated for VM placed close to the pin and a bulk capacitor rated for VM."
},
{
"number": "9",
"name": "GND",
"type": "power_in",
"description": "Device ground pin, connect to system ground."
},
{
"number": "10",
"name": "DVDD",
"type": "power_out",
"description": "Logic supply from the internal linear regulator (nominal 5 V, up to 2 mA load), bypassed to GND with a 0.47 µF to 1 µF X7R 6.3 V or 10 V ceramic capacitor."
},
{
"number": "11",
"name": "nFAULT",
"type": "output",
"description": "Open-drain fault indicator, pulled low on a fault and requiring an external pull-up to 5 V, 3.3 V or 1.8 V; open-drain output current is limited to 10 mA."
},
{
"number": "12",
"name": "VREF",
"type": "power_in",
"description": "Current-setting reference input, maximum 3.3 V; can be driven from DVDD through a resistor divider."
},
{
"number": "13",
"name": "nSCS",
"type": "input",
"description": "Active-low serial chip select with internal pull-up to DVDD."
},
{
"number": "14",
"name": "VSDO",
"type": "power_in",
"description": "Supply pin for the SDO output, connected to an external voltage chosen to match the required logic level."
},
{
"number": "15",
"name": "SDO",
"type": "output",
"description": "Push-pull serial data output, shifting data out on the rising edge of SCLK."
},
{
"number": "16",
"name": "SDI",
"type": "input",
"description": "Serial data input, captured on the falling edge of SCLK."
},
{
"number": "17",
"name": "SCLK",
"type": "input",
"description": "Serial clock input; data is shifted out and captured on the rising and falling edges of this pin."
},
{
"number": "18",
"name": "STEP",
"type": "input",
"description": "Step input, each rising edge advances the indexer by one step; internal pull-down resistor."
},
{
"number": "19",
"name": "DIR",
"type": "input",
"description": "Direction input whose logic level sets the step direction; internal pull-down resistor."
},
{
"number": "20",
"name": "ENABLE",
"type": "input",
"description": "Logic low disables the outputs (high-impedance), logic high enables them; internal pull-up to DVDD."
},
{
"number": "21",
"name": "nSLEEP",
"type": "input",
"description": "Sleep mode input: logic high enables the device, logic low enters low-power sleep; internal pull-down, and a low pulse clears latched faults."
},
{
"number": "22",
"name": "CPL",
"type": "passive",
"description": "Charge pump negative switching node; connect a low-ESR X7R 0.022 µF ceramic capacitor rated for VM between CPH and CPL."
},
{
"number": "23",
"name": "CPH",
"type": "passive",
"description": "Charge pump switch node; connect a low-ESR X7R 0.022 µF ceramic capacitor rated for VM between CPH and CPL."
},
{
"number": "24",
"name": "VCP",
"type": "power_out",
"description": "Charge pump output, connect to VM through a X7R 0.22 µF 16 V ceramic capacitor."
},
{
"number": "25",
"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: Datasheet describes nFAULT as open-drain (漏极开路); the schema enum has no open-drain class, so it is m; Datasheet lists CPL and CPH with type '电源' (power), but they are charge-pump flying-capacitor switch; Pins VM (1, 8), PGND (2, 7) are listed on two physical pins each in the VQFN table; each physical pi",
"exposed pad 25 added from the footprint",
"dropped thermal pad ['EP'] absent from footprint"
],
"pages_sent": 46,
"cost_usd": 0.1862,
"at": "2026-10-21T00:07:27"
},
"datasheet": {
"url": "https://www.ti.com/cn/lit/gpn/drv8434s",
"pages": 72,
"sha256": "25f2e8540e04853a",
"source_tier": "lcsc"
},
"cad": "KiCad official (CC-BY-SA 4.0)",
"pins": {
"total": 25,
"described": 25,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "drv8434srger.step",
"role": "plain",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
4,
4,
0.77
],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "096fc110543e6d324c5120c2d38e3dca87a389da9b6fac234f1fe40856295ef4",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
},
{
"file": "drv8434srger-etched.step",
"role": "eda",
"up": "Z",
"units": "mm",
"origin": "footprint origin = pad-pattern centre",
"seat": "z = 0",
"extents_mm": [
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4,
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],
"zmin_mm": 0,
"centre_offset_mm": 0,
"footprint_binding": "identity",
"sha256": "1cedcafacbcb891b924f7f44a7fb7d289e1645332a305d81c0ea02d9fdebe1c3",
"checked": "2026-10-21",
"checked_by": "factory/step_pose.py (Z-up, origin, seat, binding)"
}
]
},
"metadata": {
"specs": {
"Manufacturer": "Texas Instruments",
"Package": "VQFN-24(4x4)",
"Category": "Motor Driver ICs",
"Pins": "25"
},
"characteristics": {
"version": 1,
"source": "datasheet",
"datasheet_sha256": "25f2e8540e04853a400e3305cc51818b69f51a3be77a5408fb7a6e1385edcb24",
"rows": [
{
"name": "Supply voltage VM for normal DC operation",
"symbol": "VVM",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 48,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Logic-level input voltage",
"symbol": "VI",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VREF voltage",
"symbol": "VVREF",
"kind": "recommended_operating",
"unit": "V",
"min": 0.05,
"typ": null,
"max": 3.3,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Applied STEP signal frequency",
"symbol": "fSTEP",
"kind": "recommended_operating",
"unit": "kHz",
"min": 0,
"typ": null,
"max": 500,
"conditions": "",
"source_page": 5,
"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": 5,
"source": "datasheet"
},
{
"name": "Motor RMS current (xOUTx)",
"symbol": "Irms",
"kind": "recommended_operating",
"unit": "A",
"min": 0,
"typ": null,
"max": 1.8,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Operating ambient temperature",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Operating junction temperature",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 5,
"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，无电机负载",
"source_page": 6,
"source": "datasheet"
},
{
"name": "VM sleep-mode supply current",
"symbol": "IVMQ",
"kind": "electrical",
"unit": "µA",
"min": 2,
"typ": null,
"max": 4,
"conditions": "nSLEEP = 0",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Internal regulator voltage VDVDD (6V < VVM < 48V)",
"symbol": "VDVDD",
"kind": "electrical",
"unit": "V",
"min": 4.75,
"typ": 5,
"max": 5.25,
"conditions": "无外部负载，6V < VVM < 48V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Internal regulator voltage VDVDD (VVM = 4.5V)",
"symbol": "VDVDD",
"kind": "electrical",
"unit": "V",
"min": 4.2,
"typ": null,
"max": 4.35,
"conditions": "无外部负载，VVM = 4.5V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input logic-low voltage",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.6,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input logic-high voltage",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 1.5,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input logic-low current (nSCS)",
"symbol": "IIL1",
"kind": "electrical",
"unit": "µA",
"min": 8,
"typ": null,
"max": 12,
"conditions": "VIN = 0V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Input logic-low current (other pins)",
"symbol": "IIL",
"kind": "electrical",
"unit": "µA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "VIN = 0V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SDO internal pull-down resistance",
"symbol": "RPD,SDO",
"kind": "electrical",
"unit": "Ω",
"min": 30,
"typ": null,
"max": 60,
"conditions": "5 mA 负载，以 GND 为基准",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SDO internal pull-up resistance",
"symbol": "RPU,SDO",
"kind": "electrical",
"unit": "Ω",
"min": 30,
"typ": null,
"max": 60,
"conditions": "5mA 负载，以 VSDO 为基准",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SDO leakage current",
"symbol": "ISDO",
"kind": "electrical",
"unit": "µA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "SDO = VSDO 和 0V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "nFAULT output high-level leakage current",
"symbol": "IOH",
"kind": "electrical",
"unit": "µA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "High-side FET on-resistance (25°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": 165,
"typ": null,
"max": 200,
"conditions": "TJ = 25°C、IO = -1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "High-side FET on-resistance (125°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": 250,
"typ": null,
"max": 300,
"conditions": "TJ = 125°C、IO = -1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "High-side FET on-resistance (150°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": 280,
"typ": null,
"max": 350,
"conditions": "TJ = 150°C、IO = -1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Low-side FET on-resistance (25°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": 165,
"typ": null,
"max": 200,
"conditions": "TJ = 25°C、IO = 1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Low-side FET on-resistance (125°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": 250,
"typ": null,
"max": 300,
"conditions": "TJ = 125°C、IO = 1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Low-side FET on-resistance (150°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": 280,
"typ": null,
"max": 350,
"conditions": "TJ = 150°C、IO = 1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Wake-up time",
"symbol": "tWAKE",
"kind": "timing",
"unit": "ms",
"min": 0.8,
"typ": null,
"max": 1.2,
"conditions": "nSLEEP = 1 至输出转换",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Turn-on time",
"symbol": "tON",
"kind": "timing",
"unit": "ms",
"min": 0.8,
"typ": null,
"max": 1.2,
"conditions": "VM > UVLO 至输出转换",
"source_page": 6,
"source": "datasheet"
},
{
"name": "nSLEEP reset pulse (clears faults)",
"symbol": "tRESET",
"kind": "timing",
"unit": "µs",
"min": 20,
"typ": null,
"max": 40,
"conditions": "nSLEEP 低电平至清除故障",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Transconductance gain",
"symbol": "KV",
"kind": "electrical",
"unit": "V/A",
"min": 1.254,
"typ": 1.32,
"max": 1.386,
"conditions": "VREF = 3.3V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "Current trip accuracy (0.25A < IO < 0.5A)",
"symbol": "ΔITRIP",
"kind": "tolerance",
"unit": "%",
"min": -12,
"typ": null,
"max": 12,
"conditions": "0.25A < IO < 0.5A",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Current trip accuracy (0.5A < IO < 1A)",
"symbol": "ΔITRIP",
"kind": "tolerance",
"unit": "%",
"min": -6,
"typ": null,
"max": 6,
"conditions": "0.5A < IO < 1A",
"source_page": 7,
"source": "datasheet"
},
{
"name": "Current trip accuracy (1A < IO < 2.5A)",
"symbol": "ΔITRIP",
"kind": "tolerance",
"unit": "%",
"min": -4,
"typ": null,
"max": 4,
"conditions": "1A < IO < 2.5A",
"source_page": 7,
"source": "datasheet"
},
{
"name": "AOUT and BOUT current matching",
"symbol": "IO,CH",
"kind": "tolerance",
"unit": "%",
"min": -2.5,
"typ": null,
"max": 2.5,
"conditions": "IO = 2.5A",
"source_page": 7,
"source": "datasheet"
},
{
"name": "VM UVLO lock threshold (falling)",
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