Driver IC targets office and factory automation markets.
Press Release Summary:
Series SLA7070MPR unipolar 2-phase stepping motor driver IC features built-in motor coil, short- and open-circuit protection, and varied lout lineout from 1-3 A. Common interface signal and series pin compatibility simplify peripheral circuitry design, while built-in sense resistor helps reduce design space. Clock-in topology incorporates logic circuit that controls excitation switching and D/A converter, helping reduce control signal wire and micro-computer load.
Original Press Release:
Allegro Introduces Unipolar Two-Phase Stepping Motor Driver ICs
Sanken's ICs offer common interface signal, series pin compatibility
Worcester, MA - March 6, 2006 - Allegro MicroSystems, Inc. has introduced a unipolar two-phase stepping motor driver IC, designed to simplify peripheral circuitry design and reduce space while maintaining high reliability, with the introduction of the series SLA7070MPR from Sanken Electric Company, Ltd. Allegro is a wholly owned subsidiary of Sanken Electric Company, Ltd., a $1.4 billion company that manufactures semiconductors, discretes, LEDs, and switch-mode power supplies, with headquarters in Saitama, Japan. The two companies jointly develop and market leading-edge products in the areas of power management and motion control.
As office and factory automation equipment have become multifunctional, the number of motors mounted in the equipment has increased. As a result, saved space and high reliability are required features for driver ICs. The Series SLA7070M were developed to meet these market requirements by including a built-in resistor for current sense and a protection circuit against the load short or open operation. A common interface signal and series pin compatibility simplify peripheral circuitry design, while a built-in sense resistor shrinks design space. The built-in motor coil, short- and open-circuit protection, and varied lout lineout (1 A, 1.5 A, 2 A, 3 A) all increase reliability.
The series SLA7070M uses clock-in topology. The ICs are built in a logic circuit that controls excitation switching and D/A converter. As a result, driving a motor one way can be controlled with one clock signal. Consequently, clock topology makes it possible to reduce control signal wire and micro-computer load. The series has both full/half-step type and microstep type. Pin alignments of conventional motor driver series are different between full and microstepping, but the SLA7070M series were designed with commonality so that pin alignments and interface specification are compatible. As a result, users can choose the most suitable part for the required characteristics of user applications.
Targeted at the office automation and factory automation markets, the series SLA7070M is provided in an SLA package and has a 10- to 12-week ARO leadtime. Pricing is as follows:
o SLA7070MR: $2,801
o SLA7070MPR: $2,911
o SLA7071MR: $3,021
o SLA7071MPR: $3,131
o SLA7072MR: $3,197
o SLA7072MPR: $3,352
o SLA7073MR: $4,918
o SLA7073MPR: $5,138
o SLA7075MR: $3,109
o SLA7075MPR: $3,220
o SLA7076MR: $3,418
o SLA7076MPR: $3,528
o SLA7077MR: $3,749
o SLA7077MPR: $3,903
o SLA7078MR: $5,359
o SLA7078MPR: $5,579
Allegro MicroSystems, Inc. is a supplier of advanced mixed-signal power semiconductors and Hall-effect sensors targeted toward the automotive, communications, computer/office automation, consumer and industrial markets. It maintains a leadership position in the integrated magnetic sensor and integrated motor driver product segments. With more than 2,000 employees, Allegro is headquartered in Worcester, MA. Further information about Allegro, as well as free samples on our products, can be found at www.allegromicro.com.
