component
DRV8434SPWPR
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": "drv8434spwpr",
"title": "DRV8434SPWPR",
"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",
"drv8434spwpr",
"factory-2.0.0",
"extractor-text"
],
"component": {
"mpn": "DRV8434SPWPR",
"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/drv8434s",
"parts": {
"symbol": "drv8434spwpr.kicad_sym",
"footprint": "drv8434spwpr.kicad_mod",
"model_3d": "drv8434spwpr-hero.glb",
"model_3d_plain": "drv8434spwpr-etched.glb",
"model_3d_step": "drv8434spwpr-etched.step",
"model_3d_step_plain": "drv8434spwpr.step",
"lbr": "drv8434spwpr.lbr"
},
"distributor_links": {
"lcsc": "C3681202",
"digikey": "296-DRV8434SPWPRTR-ND"
},
"distributor_check": {
"checked_at": "2026-10-18T08:52:10Z",
"source": "Component Ocean /api/assign-pns",
"digikey": {
"pn": "296-DRV8434SPWPRTR-ND",
"status": "found"
},
"mouser": {
"pn": null,
"status": "quota"
}
},
"pins": [
{
"number": "1",
"name": "VCP",
"type": "power_out",
"description": "Charge pump output, connected to VM through a X7R 0.22µF 16V ceramic capacitor placed as close to the pin as possible."
},
{
"number": "2",
"name": "VM",
"type": "power_in",
"description": "Motor supply pin (4.5 V to 48 V operating range), bypassed to PGND with a 0.01µF ceramic capacitor rated for VM and a bulk capacitor rated for VM."
},
{
"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."
},
{
"number": "5",
"name": "AOUT1",
"type": "output",
"description": "Winding A output, connected to the stepper motor winding."
},
{
"number": "6",
"name": "AOUT2",
"type": "output",
"description": "Winding A output, connected to the stepper motor winding."
},
{
"number": "7",
"name": "AOUT2",
"type": "output",
"description": "Winding A output, connected to the stepper motor winding."
},
{
"number": "8",
"name": "BOUT2",
"type": "output",
"description": "Winding B output, connected to the stepper motor winding."
},
{
"number": "9",
"name": "BOUT2",
"type": "output",
"description": "Winding B output, connected to the stepper motor winding."
},
{
"number": "10",
"name": "BOUT1",
"type": "output",
"description": "Winding B output, connected to the stepper motor winding."
},
{
"number": "11",
"name": "BOUT1",
"type": "output",
"description": "Winding B output, connected to the stepper motor winding."
},
{
"number": "12",
"name": "PGND",
"type": "power_in",
"description": "Power ground, connected to system ground."
},
{
"number": "13",
"name": "VM",
"type": "power_in",
"description": "Motor supply pin (4.5 V to 48 V operating range), bypassed to PGND with a 0.01µF ceramic capacitor rated for VM and a bulk capacitor rated for VM."
},
{
"number": "14",
"name": "GND",
"type": "power_in",
"description": "Device ground, connected to system ground."
},
{
"number": "15",
"name": "DVDD",
"type": "power_out",
"description": "Logic supply from the internal regulator (nominal 5 V), bypassed to GND with a 0.47µF to 1µF X7R 6.3 V or 10 V ceramic capacitor; the LDO supplies at most 2 mA."
},
{
"number": "16",
"name": "nFAULT",
"type": "output",
"description": "Open-drain fault indication output, pulled low during a fault and requiring an external pull-up resistor to 5 V, 3.3 V or 1.8 V."
},
{
"number": "17",
"name": "VREF",
"type": "power_in",
"description": "Current setpoint reference input with a maximum of 3.3 V; DVDD can be divided through a resistor divider to supply VREF."
},
{
"number": "18",
"name": "nSCS",
"type": "input",
"description": "Active-low serial chip select with an internal pull-up to DVDD."
},
{
"number": "19",
"name": "VSDO",
"type": "power_in",
"description": "Supply pin for the SDO output, connected to an external voltage chosen for the required logic level."
},
{
"number": "20",
"name": "SDO",
"type": "output",
"description": "Push-pull serial data output, shifted out on the rising edge of SCLK."
},
{
"number": "21",
"name": "SDI",
"type": "input",
"description": "Serial data input, captured on the falling edge of SCLK."
},
{
"number": "22",
"name": "SCLK",
"type": "input",
"description": "Serial clock input; data is shifted out and captured on the corresponding rising and falling edges of this pin."
},
{
"number": "23",
"name": "STEP",
"type": "input",
"description": "Step input, where each rising edge advances the indexer by one step; internal pull-down resistor."
},
{
"number": "24",
"name": "DIR",
"type": "input",
"description": "Direction input whose logic level sets the stepping direction; internal pull-down resistor."
},
{
"number": "25",
"name": "ENABLE",
"type": "input",
"description": "Logic low disables the device outputs and logic high enables them; internal pull-up to DVDD."
},
{
"number": "26",
"name": "nSLEEP",
"type": "input",
"description": "Logic high enables the device and logic low places it in low-power sleep mode; a low pulse on this pin clears faults; internal pull-down resistor."
},
{
"number": "27",
"name": "CPL",
"type": "passive",
"description": "Charge pump flying-capacitor node, connected to CPH through a X7R 0.022µF ceramic capacitor rated for VM."
},
{
"number": "28",
"name": "CPH",
"type": "passive",
"description": "Charge pump switch node, connected to CPL through a 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: The thermal pad (PAD, connected to system ground) is listed in the pin table without a numeric pin n; nFAULT is an open-drain output, but the allowed type set has no open-drain class, so it is mapped to; The datasheet classifies CPH and CPL as 'power' pins, but they are a charge pump switch node and fly",
"exposed pad 29 added from the footprint"
],
"pages_sent": 46,
"cost_usd": 0.1898,
"at": "2026-10-18T08:51:13"
},
"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": 29,
"described": 29,
"cites_pages": true,
"refuses_to_fabricate": true
}
},
"viewers": {
"symbol": "viewers/symbol.html",
"footprint": "viewers/footprint.html"
},
"models_3d": [
{
"file": "drv8434spwpr.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": "drv8434spwpr-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": "9ea1c779a04b26eb4a4d2c14cbcee42ac116a24c5fb7f261520fa9cb1a685dcd",
"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": "25f2e8540e04853a400e3305cc51818b69f51a3be77a5408fb7a6e1385edcb24",
"rows": [
{
"name": "VVM 可确保正常（直流）运行的电源电压范围",
"symbol": "VVM",
"kind": "recommended_operating",
"unit": "V",
"min": 4.5,
"typ": null,
"max": 48,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VI 逻辑电平输入电压",
"symbol": "VI",
"kind": "recommended_operating",
"unit": "V",
"min": 0,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VVREF VREF 电压",
"symbol": "VVREF",
"kind": "recommended_operating",
"unit": "V",
"min": 0.05,
"typ": null,
"max": 3.3,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "fSTEP 施加的 STEP 信号",
"symbol": "fSTEP",
"kind": "recommended_operating",
"unit": "kHz",
"min": 0,
"typ": null,
"max": 500,
"conditions": "STEP 输入工作频率最高可达 500kHz，但系统带宽受电机负载限制",
"source_page": 5,
"source": "datasheet"
},
{
"name": "IFS 电机满量程电流 (xOUTx)",
"symbol": "IFS",
"kind": "recommended_operating",
"unit": "A",
"min": 0,
"typ": null,
"max": 2.5,
"conditions": "必须遵守功耗和热限值",
"source_page": 5,
"source": "datasheet"
},
{
"name": "Irms 电机均方根电流 (xOUTx)",
"symbol": "Irms",
"kind": "recommended_operating",
"unit": "A",
"min": 0,
"typ": null,
"max": 1.8,
"conditions": "必须遵守功耗和热限值",
"source_page": 5,
"source": "datasheet"
},
{
"name": "TA 工作环境温度",
"symbol": "TA",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 125,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "TJ 工作结温",
"symbol": "TJ",
"kind": "recommended_operating",
"unit": "°C",
"min": -40,
"typ": null,
"max": 150,
"conditions": "",
"source_page": 5,
"source": "datasheet"
},
{
"name": "VM 工作电源电流",
"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 睡眠模式电源电流",
"symbol": "IVMQ",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 2,
"max": 4,
"conditions": "nSLEEP = 0",
"source_page": 6,
"source": "datasheet"
},
{
"name": "nSLEEP 复位脉冲",
"symbol": "tRESET",
"kind": "timing",
"unit": "μs",
"min": null,
"typ": 20,
"max": 40,
"conditions": "nSLEEP 低电平至清除故障",
"source_page": 6,
"source": "datasheet"
},
{
"name": "唤醒时间",
"symbol": "tWAKE",
"kind": "timing",
"unit": "ms",
"min": null,
"typ": 0.8,
"max": 1.2,
"conditions": "nSLEEP = 1 至输出转换",
"source_page": 6,
"source": "datasheet"
},
{
"name": "开通时间",
"symbol": "tON",
"kind": "timing",
"unit": "ms",
"min": null,
"typ": 0.8,
"max": 1.2,
"conditions": "VM > UVLO 至输出转换",
"source_page": 6,
"source": "datasheet"
},
{
"name": "内部稳压器电压 (VDVDD)",
"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": "内部稳压器电压 (VDVDD)",
"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": "输入逻辑低电平电压",
"symbol": "VIL",
"kind": "electrical",
"unit": "V",
"min": 0,
"typ": null,
"max": 0.6,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "输入逻辑高电平电压",
"symbol": "VIH",
"kind": "electrical",
"unit": "V",
"min": 1.5,
"typ": null,
"max": 5.5,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "输入逻辑低电平电流 (nSCS)",
"symbol": "IIL1",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": 8,
"max": 12,
"conditions": "VIN = 0V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "输入逻辑低电平电流（其他引脚）",
"symbol": "IIL",
"kind": "electrical",
"unit": "μA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "VIN = 0V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "输入逻辑高电平电流 (nSCS)",
"symbol": "IIH1",
"kind": "electrical",
"unit": "nA",
"min": null,
"typ": null,
"max": 500,
"conditions": "VIN = DVDD",
"source_page": 6,
"source": "datasheet"
},
{
"name": "输入逻辑高电平电流（其他引脚）",
"symbol": "IIH",
"kind": "electrical",
"unit": "μA",
"min": null,
"typ": null,
"max": 100,
"conditions": "VIN = 5V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SDO 内部下拉电阻",
"symbol": "RPD,SDO",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": 30,
"max": 60,
"conditions": "5mA 负载，以 GND 为基准",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SDO 内部上拉电阻",
"symbol": "RPU,SDO",
"kind": "electrical",
"unit": "Ω",
"min": null,
"typ": 30,
"max": 60,
"conditions": "5mA 负载，以 VSDO 为基准",
"source_page": 6,
"source": "datasheet"
},
{
"name": "SDO 泄漏电流",
"symbol": "ISDO",
"kind": "electrical",
"unit": "μA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "SDO = VSDO 和 0V",
"source_page": 6,
"source": "datasheet"
},
{
"name": "输出逻辑低电平电压 (nFAULT)",
"symbol": "VOL",
"kind": "electrical",
"unit": "V",
"min": null,
"typ": null,
"max": 0.5,
"conditions": "IO = 5mA",
"source_page": 6,
"source": "datasheet"
},
{
"name": "输出逻辑高电平泄漏电流 (nFAULT)",
"symbol": "IOH",
"kind": "electrical",
"unit": "μA",
"min": -1,
"typ": null,
"max": 1,
"conditions": "",
"source_page": 6,
"source": "datasheet"
},
{
"name": "高侧 FET 导通电阻 (TJ = 25°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 165,
"max": 200,
"conditions": "TJ = 25°C、IO = -1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "高侧 FET 导通电阻 (TJ = 125°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 250,
"max": 300,
"conditions": "TJ = 125°C、IO = -1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "高侧 FET 导通电阻 (TJ = 150°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 280,
"max": 350,
"conditions": "TJ = 150°C、IO = -1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "低侧 FET 导通电阻 (TJ = 25°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
"unit": "mΩ",
"min": null,
"typ": 165,
"max": 200,
"conditions": "TJ = 25°C、IO = 1A",
"source_page": 6,
"source": "datasheet"
},
{
"name": "低侧 FET 导通电阻 (TJ = 125°C)",
"symbol": "RDS(ON)",
"kind": "electrical",
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