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The L6470 device, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar stepper motors with microstepping. It integrates a dual low RDS(on)DMOS full bridge with all of the power switches equipped with an accurate on-chip current sensing circuitry suitable for non-dissipative current control and overcurrent protection. Thanks to a unique control system, a true 1/128 steps resolution is achieved. The digital control core can generate user defined motion profiles with acceleration, deceleration, speed or target position, easily programmed through a dedicated registers set. All commands and data registers, including those used to set analogue values (i.e. current control value, current protection trip point, deadtime, PWM frequency, etc.) are sent through a standard 5-Mbit/s SPI. A very rich set of protections (thermal, low bus voltage, overcurrent, motor stall) allows the design of a fully protected application, as required by the most demanding motor control applications.
Key Features
- Operating voltage: 8 - 45 V
- 7.0 A out peak current (3.0 A r.m.s.)
- Low RDS(on)Power MOSFETs
- Programmable speed profile and positioning
- Programmable power MOS slew rate
- Up to 1/128 microstepping
- Sensorless stall detection
- SPI interface
- Low quiescent and standby currents
- Programmable non-dissipative overcurrent protection on high and low-side
- Two-levels of overtemperature protection
Download 
Development Tools
Ecosystems
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Picture Part number Manufacturer Description 
X-NUCLEO-IHM02A1 ST Two axis stepper motor driver expansion board based on the L6470 for STM32 Nucleo Part NumberTwo axis stepper motor driver expansion board based on the L6470 for STM32 Nucleo
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Embedded Software
Evaluation Tools
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Picture Part number Manufacturer Description 
EVAL6470H -- Fully integrated stepper motor driver mounting the L6470 
EVAL6470H-DISC -- L6470 Discovery: development tool to explore L6470 motor driver 
EVAL6470PD -- Fully integrated stepper motor driver mounting the L6470 in a high power PowerSO package 
STEVAL-PCC009V2 -- IBU Motor Control & IPS universal interface Part NumberFully integrated stepper motor driver mounting the L6470
L6470 Discovery: development tool to explore L6470 motor driver
Fully integrated stepper motor driver mounting the L6470 in a high power PowerSO package
IBU Motor Control & IPS universal interface
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Quality and Reliability
| Part Number | Marketing Status | Package | Grade | RoHS Compliance Grade | Material Declaration** |
|---|---|---|---|---|---|
| L6470H | Active | HTSSOP28 | Industrial | Ecopack2 | |
| L6470HTR | Active | HTSSOP28 | Industrial | Ecopack2 | |
| L6470PD | Active | PowerSO 36 | Industrial | Ecopack2 (**) | |
| L6470PDTR | Active | PowerSO 36 | Industrial | Ecopack1 (*) |
(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.
Sample & Buy
| Part Number | Order from Distributors | Order from ST | Marketing Status | Package | Packing Type | Temperature (°C) | ECCN (US) | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|
| min | max | ||||||||||
| L6470HTR | 4 distributors | Get sample | Active | HTSSOP28 | Tape And Reel | -40 | 150 | EAR99 | PHILIPPINES | 2.671 / 1k | |
| L6470PDTR | 4 distributors | Buy now | Active | PowerSO 36 | Tape And Reel | -40 | 150 | EAR99 | MALAYSIA | 3.093 / 1k | |
| L6470PD | 5 distributors | Buy now | Active | PowerSO 36 | Tube | -40 | 150 | EAR99 | MALAYSIA | 3.093 / 1k | |
| L6470H | 8 distributors | Buy now | Active | HTSSOP28 | Tube | -40 | 150 | EAR99 | PHILIPPINES | 2.671 / 1k | |
(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office or our Distributors
