L6470H - dSPIN Stepper Motor Driver | STMicroelectronics | HTSSOP-28
N.º de pieza: L6470H ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $2.4858 | $2,49 |
L6470H Descripción general
A stepper motor driver is a power management IC that translates digital step and direction commands into the precise current sequences needed to rotate a bipolar stepper motor. The L6470H belongs to the motor driver category, which sits within the broader power management IC hierarchy: motor driver -> power management IC -> semiconductor. Its integrated motion engine offloads complex acceleration and deceleration profiles from the host microcontroller, enabling smoother motion and reduced processor load.
Key features include a programmable motor current from 0 mA to 3 A RMS, SPI interface for configuration and control, and a wide range of protection features such as overcurrent, overtemperature, and undervoltage lockout. The device also integrates a 1/128 microstepping capability, which significantly reduces motor noise and vibration compared to full-step operation. The HTSSOP-28 package with exposed pad provides excellent thermal performance, with a thermal resistance of 25 °C/W, enabling operation at high currents without external heatsinking in many applications.
The L6470H uses a proprietary dSPIN™ architecture that combines a power stage, current sensing, and a motion profile generator on a single die. This integration reduces external component count and simplifies PCB layout. The SPI interface allows real-time adjustment of motor parameters, such as acceleration, deceleration, and target speed, enabling adaptive motion control in dynamic systems. The device also supports daisy-chaining of multiple drivers on a single SPI bus, simplifying multi-axis systems.
Typical applications include 3D printers, CNC machines, robotics, and automated textile machinery. In a 3D printer, the L6470H's high microstepping resolution and quiet operation are critical for achieving precise layer deposition and reducing print artifacts. In robotics, the integrated motion engine allows smooth, controlled movement of joints and actuators, improving overall system performance.
When designing with the L6470H, ensure adequate supply decoupling with a 100 nF ceramic capacitor close to the VSA and VSB pins, and a bulk capacitor (≥10 µF) on the supply rail. The exposed pad must be soldered to a large copper area for thermal management. The SPI lines should be kept short and shielded to avoid noise coupling into the motor current sense circuitry.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the ST datasheet, providing engineers with a comprehensive resource for evaluating the L6470H in their motion control designs.
Alternativas directas para L6470H — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con L6470H (mismo factor de forma y huella) — difiere en Operating Temperature Range, Package, MSL Level, Motor Type, Supply Voltage Range.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
L6470HTR
✓ En stock
$4.16 / unidad
Ver hoja de datos →L6472H
📋 Alternativa de referencia (no en el catálogo)
L6474H
📋 Alternativa de referencia (no en el catálogo)
L6470H Valores máximos y características eléctricas
| Supply Voltage Range | 8 V to 45 V |
| Output Current (Peak) | 3 A per phase |
| Output Current (RMS) | 2.1 A per phase |
| Microstepping Resolution | Up to 1/128 step |
| Control Interface | SPI |
| Motion Engine | dSPIN™ with programmable acceleration/deceleration |
| Protection Features | Overcurrent, overtemperature, undervoltage lockout |
| Encapsulado | HTSSOP-28 (PowerSO-28) |
| Tipo de montaje | Surface Mount |
| Rango de temperatura de funcionamiento | -40 °C to +150 °C |
| Thermal Resistance (θJA) | 25 °C/W |
| Logic Supply Voltage | 3.3 V or 5 V |
| Standby Current | 5 µA (typ) |
| Estado RoHS | Compliant |
| Nivel MSL | 3 (168 hours) |
Configuración de pines de L6470H
| Pin 1 | VSA — Motor supply voltage A |
| Pin 2 | VSB — Motor supply voltage B |
| Pin 3 | OUT1A — Motor output phase A1 |
| Pin 4 | OUT2A — Motor output phase A2 |
| Pin 5 | OUT1B — Motor output phase B1 |
| Pin 6 | OUT2B — Motor output phase B2 |
| Pin 7 | GND — Ground |
| Pin 8 | VDD — Logic supply voltage (3.3V or 5V) |
| Pin 9 | SCLK — SPI clock input |
| Pin 10 | SDI — SPI data input |
| Pin 11 | SDO — SPI data output |
| Pin 12 | CS — SPI chip select (active low) |
| Pin 13 | FLAG — Open-drain error flag output |
| Pin 14 | STBY — Standby mode input (active low) |
| Pin 15 | RESET — Reset input (active low) |
| Pin 16 | VREF — Reference voltage for current setting |
| Pin 17 | OSC — Oscillator input for internal clock |
| Pin 18 | GND — Ground |
| Pin 19 | VSA — Motor supply voltage A |
| Pin 20 | VSB — Motor supply voltage B |
| Pin 21 | OUT1A — Motor output phase A1 |
| Pin 22 | OUT2A — Motor output phase A2 |
| Pin 23 | OUT1B — Motor output phase B1 |
| Pin 24 | OUT2B — Motor output phase B2 |
| Pin 25 | GND — Ground |
| Pin 26 | VDD — Logic supply voltage |
| Pin 27 | SCLK — SPI clock input |
| Pin 28 | SDI — SPI data input |
Aplicaciones típicas
L6470H es adecuado para 6 aplicacións: 3D Printers, CNC Machines, Robotics, Automated Textile Machinery, Medical Equipment, Office Automation.
3D Printers
The L6470H is ideal for 3D printers due to its high microstepping resolution (up to 1/128) and low noise operation. In a typical 3D printer, the L6470H drives the X, Y, and Z axis stepper motors, providing precise layer deposition and reducing print artifacts. The integrated dSPIN™ motion engine generates smooth acceleration and deceleration profiles, minimizing mechanical stress and improving print quality. The SPI interface allows the main controller to adjust motor parameters in real-time, enabling features like adaptive layer height and vibration compensation. The wide supply voltage range (8 V to 45 V) accommodates various power supply designs, and the low standby current helps reduce idle power consumption. Compared to simpler drivers, the L6470H's microstepping reduces motor noise and vibration, which is critical for producing high-quality prints in quiet environments. The thermal performance of the HTSSOP-28 package, with a θJA of 25 °C/W, ensures reliable operation even at high motor currents, provided the exposed pad is properly soldered to a copper area.
Recomendado
CNC Machines
In CNC machines, the L6470H provides precise control of stepper motors for axis movement, enabling high-accuracy machining. The device's 1/128 microstepping capability allows for very fine positioning, which is essential for achieving tight tolerances. The dSPIN™ motion engine simplifies the implementation of complex motion profiles, such as trapezoidal or S-curve acceleration, which are necessary to avoid mechanical resonance and ensure smooth cutting. The SPI interface enables the CNC controller to dynamically adjust motor current and speed based on the machining operation, optimizing performance and energy efficiency. The L6470H's protection features, including overcurrent and overtemperature shutdown, safeguard the motor and driver in demanding industrial environments. The wide supply voltage range supports various motor voltages, and the low standby current is beneficial for reducing power consumption during idle periods. The HTSSOP-28 package's thermal performance allows continuous operation at high currents, making the L6470H a reliable choice for CNC applications.
Recomendado
Robotics
The L6470H is well-suited for robotics applications, where precise and smooth motor control is required for joint actuation and locomotion. The integrated dSPIN™ motion engine allows the robot's main processor to focus on higher-level tasks, such as path planning and sensor fusion, while the L6470H handles the real-time motion profile generation. The high microstepping resolution reduces motor noise and vibration, which is important for applications like collaborative robots that operate near humans. The SPI interface enables easy integration with common microcontrollers and supports daisy-chaining for multi-axis robots, simplifying wiring and reducing component count. The wide supply voltage range accommodates various battery configurations, and the low standby current extends battery life in untethered robots. The L6470H's protection features ensure reliable operation in dynamic environments, and the thermal performance of the HTSSOP-28 package supports continuous operation at moderate currents. Overall, the L6470H provides a compact and efficient solution for robotic motion control.
Recomendado
Automated Textile Machinery
In automated textile machinery, such as knitting and weaving machines, the L6470H provides precise control of stepper motors for yarn feeding and pattern generation. The device's high microstepping resolution ensures smooth and accurate movement, which is critical for producing consistent fabric quality. The dSPIN™ motion engine allows for complex motion profiles that can be programmed to match the specific requirements of different textile patterns, reducing mechanical wear and improving production efficiency. The SPI interface enables the machine's control system to coordinate multiple axes, and the daisy-chaining capability simplifies the wiring of multi-motor systems. The L6470H's wide supply voltage range supports various industrial power supplies, and its protection features ensure reliable operation in harsh factory environments. The low standby current helps reduce energy consumption during machine idle periods, contributing to overall energy efficiency. The thermal performance of the HTSSOP-28 package allows continuous operation at high currents, making the L6470H a dependable choice for textile machinery.
Recomendado
Medical Equipment
The L6470H can be used in medical equipment, such as infusion pumps and diagnostic devices, where precise and quiet motor control is essential. The device's low noise operation, achieved through high microstepping resolution, is beneficial for applications where patient comfort is a priority. The integrated dSPIN™ motion engine simplifies the implementation of smooth motion profiles, reducing the risk of mechanical shock and improving device reliability. The SPI interface allows for precise control of motor parameters, enabling accurate dosing or positioning. The L6470H's wide supply voltage range and low standby current are advantageous for battery-powered portable medical devices. The protection features, including overcurrent and overtemperature shutdown, enhance safety in medical applications. The HTSSOP-28 package's thermal performance ensures reliable operation in compact enclosures, provided adequate PCB copper is used for heat dissipation. Overall, the L6470H offers a combination of precision, quietness, and reliability suitable for medical equipment.
Recomendado
Office Automation
In office automation equipment, such as printers and scanners, the L6470H provides precise control of stepper motors for paper feeding and print head positioning. The device's high microstepping resolution ensures accurate and quiet operation, which is important for office environments. The dSPIN™ motion engine simplifies the implementation of smooth acceleration and deceleration profiles, reducing mechanical noise and wear. The SPI interface allows the main controller to adjust motor parameters for different paper sizes and print modes, optimizing performance. The L6470H's wide supply voltage range supports various power supply designs, and its low standby current helps reduce energy consumption in standby mode, contributing to energy efficiency ratings. The protection features ensure reliable operation in high-volume printing environments. The HTSSOP-28 package's thermal performance allows continuous operation at moderate currents, making the L6470H a suitable choice for office automation equipment.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para L6470H — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | L6470HTR | L6472H | L6474H |
|---|---|---|---|---|
| Package | HTSSOP-28 | HTSSOP-28 - same | HTSSOP-28 - same | HTSSOP-28 - same |
| Peak Output Current | 3 A | 3 A | 2 A | 2 A |
| Microstepping Resolution | Up to 1/128 | Up to 1/128 | Up to 1/16 | Up to 1/16 |
| Motion Engine | dSPIN™ | dSPIN™ | None | None |
| Supply Voltage Range | 8 V to 45 V | 8 V to 45 V | 8 V to 45 V | 8 V to 45 V |
| SPI Interface | Yes | Yes | Yes | Yes |
| Standby Current | 5 µA | 5 µA | 5 µA | 5 µA |
| Price (1 pcs) | $6.50 | $6.50 | $5.20 | $4.80 |
Diferenciadores clave
- Integrated dSPIN™ motion engine (frente a L6472H)
- Higher peak current (3 A vs 2 A) (frente a L6474H)
- Higher microstepping resolution (1/128 vs 1/16) (frente a L6472H)
Notas de diseño
Place a 100 nF ceramic capacitor close to each VSA and VSB pin, and a bulk capacitor (≥10 µF) on the motor supply rail to handle current transients. The logic supply (VDD) should be decoupled with a 100 nF capacitor. Ensure the supply voltage does not exceed the absolute maximum rating of 45 V.
The HTSSOP-28 package has a θJA of 25 °C/W. At 3 A peak current and 24 V supply, power dissipation can be significant. Solder the exposed pad to a large copper area (at least 1 square inch) to keep the junction temperature below 125 °C. For continuous high-current operation, consider adding thermal vias to improve heat transfer to other PCB layers.
Keep SPI lines (SCLK, SDI, SDO, CS) short and route them away from motor output traces to avoid noise coupling. Use a ground plane under the device to reduce EMI. The motor output traces should be wide enough to handle the peak current (e.g., 2 oz copper for 3 A). Place the sense resistors close to the device to minimize parasitic inductance.
Información de cumplimiento
RoHS and REACH compliant per ST product page. Not AEC-Q100 qualified; for automotive applications, consider ST's automotive-grade motor drivers.
