Stepper motor driver
ALLEGRO MICROSYSTEMS
High-Current PWM, Unipolar Stepper Motor Controller/Drivers
Features
* Cost-Effective, Multi-Chip Solution
* 'Turn-Key' Motion-Control Module
* Motor Operation to 3 A and 46 V
* 3rd Generation High-Voltage FETs
* 100 V, Avalanche-Rated NMOS
* Low rDS(on) NMOS Outputs
* Advanced, Improved Body Diodes
* Single-Supply Motor/Module Operation
* Half- or Full-Step Unipolar Drive
* High-Efficiency, High-Speed PWM
* Dual PWM Current Control (2-Phase)
* Programmable PWM Current Control
* Low Component Count PWM Drive
* Low Internal Power Dissipation
* Heat Sinking (Normally) Unnecessary
* Electrically Isolated Power Tab
* Logic IC- and µP-Compatible Inputs
* Machine-Insertable Package
Description
The SLA7024M, SLA7026M, and SMA7029M are designed for high-efficiency and high-performance operation of 2-phase, unipolar stepper motors. An automated, innovative packaging technology combined with power FETs and monolithic logic/control circuitry advances power multi-chip modules (PMCMsTM) toward the complete integration of motion control. Highly automated manufacturing techniques provide low-cost and exceptionally reliable PMCMs suitable for controlling and directly driving a broad range of 2-phase, unipolar stepper motors. The three stepper motor multi-chip modules differ primarily in output current ratings (1.5 A or 3.0 A) and package style.
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