Description
A4982SLPTR-T DMOS Microstepping Driver with Translator and Overcurrent Protection
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The A4982 is a complete microstepping motor driver withbuilt-in translator for easy operation. It is designed to operatebipolar stepper motors in full-, half-, quarter-, and sixteenth-stepmodes, with an output drive capacity of up to 35 V and ±2 A.The A4982 includes a fixed off-time current regulator whichhas the ability to operate in Slow or Mixed decay modes.The ET package meets customer requirements for no smokeno fire (NSNF) designs by adding no-connect pins betweencritical output, sense, and supply pins. So, in the case of apin-to-adjacent-pin short, the device does not cause smokeor fire. Additionally, the device does not cause smoke or firewhen any pin is shorted to ground or left open.The translator is the key to the easy implementation of theA4982. Simply inputting one pulse on the STEP input drivesthe motor one microstep. There are no phase sequence tables,high frequency control lines, or complex interfaces to program.The A4982 interface is an ideal fit for applications where acomplex microprocessor is unavailable or is overburdened.During stepping operation, the chopping control in the A4982automatically selects the current decay mode, Slow or Mixed.
Specs