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SLA7061M

Allegro MicroSystems
Part Number SLA7061M
Manufacturer Allegro MicroSystems
Description UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVERS
Published Jul 4, 2010
Detailed Description PRELIMINARY INFORMATION (subject to change without notice) September 24, 2003 SLA7060M THRU SLA7062M UNIPOLAR STEPPER-...
Datasheet PDF File SLA7061M PDF File

SLA7061M
SLA7061M

Overview
PRELIMINARY INFORMATION (subject to change without notice) September 24, 2003 SLA7060M THRU SLA7062M UNIPOLAR STEPPER-MOTOR TRANSLATOR/DRIVERS Combining low-power CMOS logic with high-current, high-voltage power FET outputs, the Series SLA7060M translator/drivers provide complete control and drive for a two-phase unipolar stepper motor with internal fixed off time and pulse-width modulation (PWM) control of the output current in a power multi-chip module (PMCM™).
There are no phase-sequence tables, high-frequency control lines, or complex interfaces to program.
The CMOS logic section provides the sequencing logic, direction, control, synchronous/asynchronous PWM operation, and a “sleep” function.
The minimum CLOCK input is an ideal fit for applications where a complex µP is unavailable or overburdened.
TTL or LSTTL may require the use of appropriate pull-up resistors to ensure a proper input-logic high.
For PWM current control, the maximum output current is determined by the user’s selection of a reference voltage and sensing resistor.
The NMOS outputs are capable of sinking up to 1, 2, or 3 A (depending on device) and withstanding 46 V in the off state.
Clamp diodes provide protection against inductive transients.
Special power-up sequencing is not required.
Half-, quarter-, eighth-, and sixteenth-step operation are externally selectable for the SLA7060/61/62M.
Half-step excitation alternates between the one-phase and two-phase modes (AB-B-AB-A-AB-B-ABA), providing an eight-step sequence.
The Series SLA7060M is supplied in a 21-pin single in-line powertab package with leads formed for vertical mounting (suffix LF2102).
The tab is at ground potential and needs no insulation.
For high-current or high-frequency applications, external heat sinking may be required.
This device is rated for continuous operation between -20°C and +85°C.
Data Sheet 28210.
10 ABSOLUTE MAXIMUM RATINGS Driver Supply Voltage, VBB .
46 V Load Supply Voltage, VM ...


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