DatasheetsPDF.com

A5984

Allegro MicroSystems
Part Number A5984
Manufacturer Allegro MicroSystems
Description DMOS Microstepping Driver
Published Nov 5, 2016
Detailed Description A5984 DMOS Microstepping Driver with Translator and Overcurrent Protection FEATURES AND BENEFITS • Drop-in replacement ...
Datasheet PDF File A5984 PDF File

A5984
A5984


Overview
A5984 DMOS Microstepping Driver with Translator and Overcurrent Protection FEATURES AND BENEFITS • Drop-in replacement for A4984 • Proprietary Adaptive Percent Fast Decay option • Low RDS(on) outputs • Single supply • Microstepping up to 32 microsteps per full step • Full torque step modes • Short-to-ground protection • Shorted load protection • Short-to-battery protection • Fault output • Low current Sleep mode, < 10 µA • No smoke no fire (NSNF) compliance (ET package) • Thin profile QFN and TSSOP packages • Thermal shutdown circuitry • Synchronous rectification for low power dissipation • Internal UVLO • Crossover-current protection APPLICATIONS • Video Security Cameras • Printers • Scanners • Robotics • ATM • POS DESCRIPTION The A5984 is a complete microstepping motor driver with built-in translator for easy operation.
It is designed to operate bipolar stepper motors from full-step up to 1/32 step modes.
Step modes are selectable by MSx logic inputs.
It has an output drive capacity of up to 40 V and ±2 A.
The A5984 introduces a proprietary Adaptive Percent Fast Decay (APFD) algorithm to optimize the current waveform over a wide range of stepper speeds and stepper motor characteristics.
APFD adjusts on-the-fly the amount of fast decay during a PWM cycle to keep current ripple at a low level over the various operating conditions.
This adaptive feature improves performance of the system resulting in reduced audible motor noise, reduced vibration, and increased step accuracy.
The translator is the key to the easy implementation of the A5984.
Simply inputting one pulse on the STEP input drives the motor one microstep.
There are no phase sequence tables, high frequency control lines, or complex interfaces to program.
The A5984 interface is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened.
The ET package meets customer requirements for no smoke no fire (NSNF) designs by adding no-connect pins between critical output, sen...


Similar Datasheet


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site. (Privacy Policy & Contact)