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A4983 Datasheet PDF

Part Series:A4983 Series
Category:Motor Drivers
Description:ALLEGRO MICROSYSTEMS A4983SETTR-T Motor Driver, DMOS, 3V to 5.5V supply, 35V/2A/2Outputs, QFN-28
Document:A4983SETTR-T Datasheet PDF (16 Pages)

A4983 Motor Drivers Datasheet PDF

#1
A4983SETTR-T
3.7
Allegro MicroSystems
#2
A4983SET-T
0.7
Allegro MicroSystems

A4983SETTR-T - Allegro MicroSystems Specifications

TYPE
DESCRIPTION
Mounting Style
Surface Mount
Number of Pins
28 Pin
Supply Voltage (DC)
3.00V (min)
Case/Package
QFN-28
Number of Outputs
2 Output
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A4983SETTR-T - Allegro MicroSystems Function Overview

The A4983SETTR-T is a DMOS micro-stepping Driver with built in translator. The A4983 driver is designed to operate bipolar stepper motors in full, half, quarter, eighth and sixteenth-step modes, with output drive capacity of up to 35V and ±2A. It includes a fixed off-time current regulator that has the ability to operate in slow or mixed decay modes. It is an ideal fit for applications where a complex microprocessor is unavailable or is overburdened. The translator is the key to the easy implementation, simply inputting one pulse on the STEP input drives the motor one micro-step. The chopping control automatically selects the current decay mode (slow or mixed). When a signal occurs at the STEP input pin, driver determines if that step results in a higher or lower current in each of the motor phases. Internal circuit protection includes thermal shutdown with hysteresis, under-voltage lockout (UVLO) and cross over-current protection.
Low RDS (ON) outputs
Automatic current decay mode detection/selection
Synchronous rectification for low power dissipation
Thermal shutdown circuitry
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