L6470H - dSPIN Stepper Motor Driver | STMicroelectronics | HTSSOP-28
MPN: L6470H ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $2.82 | $2.82 |
| 10 | $2.372 | $23.72 |
| 100 | $2.523 | $252.30 |
| 500 | $2.452 | $1,226.00 |
| 1,000 | $2.415 | $2,415.00 |
| 2,500 | $2.4 | $6,000.00 |
Drop-in alternatives for L6470H — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
L6470HTR
📋 Reference alternative (not in catalog)
L6472H
📋 Reference alternative (not in catalog)
L6474H
📋 Reference alternative (not in catalog)
L6470H Maximum Ratings & Electrical Characteristics
| 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 |
| Package | HTSSOP-28 (PowerSO-28) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -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) |
| RoHS Status | Compliant |
| MSL Level | 3 (168 hours) |
L6470H Pin Configuration
| 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 |
Safe Operating Area (SOA) & Thermal Characteristics
No official SOA curve available for this component. Always operate within absolute maximum ratings specified in the datasheet. Ensure adequate cooling and derate as needed.
Typical Applications
L6470H is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for L6470H — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- Integrated dSPIN™ motion engine (vs L6472H)
- Higher peak current (3 A vs 2 A) (vs L6474H)
- Higher microstepping resolution (1/128 vs 1/16) (vs L6472H)
Design Notes
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.
Compliance Information
RoHS and REACH compliant per ST product page. Not AEC-Q100 qualified; for automotive applications, consider ST's automotive-grade motor drivers.
