A3977SLPTR-T - Allegro MicroSystems

Manufacturer Part Number

A3977SLPTR-T

Manufacturer

Allegro MicroSystems

Introduction

Highly Integrated DMOS Microstepping Bipolar Stepper Motor Driver

Product Features and Performance

5A peak output current per phase

3V to 5.5V logic supply voltage

8V to 35V motor supply voltage

Adjustable current control with 1, 1/2, 1/4, and 1/8 step resolutions

Internal decay mode control

Integrated slow decay synchronous rectification

Thermal shutdown and undervoltage lockout protection

Diagnostic functions including short-circuit, open-load, and overtemperature indicators

Product Advantages

Highly integrated solution for bipolar stepper motor control

Provides advanced features for precise motor control

Protects against common fault conditions for reliable operation

Key Technical Parameters

Peak Output Current: 2.5A

Logic Supply Voltage: 3V to 5.5V

Motor Supply Voltage: 8V to 35V

Step Resolutions: 1, 1/2, 1/4, 1/8

Motor Type: Bipolar Stepper

Quality and Safety Features

ROHS3 compliant

Thermal shutdown and undervoltage lockout protection

Compatibility

Suitable for a wide range of bipolar stepper motor applications

Application Areas

General purpose stepper motor control applications

Product Lifecycle

The A3977 is an active product with no plans for discontinuation. Upgrades and replacements may be available in the future.

Key Reasons to Choose

Highly integrated solution for precise, reliable bipolar stepper motor control

Extensive protection and diagnostic features for robust operation

Wide operating voltage ranges and adjustable step resolutions for flexibility

Proven track record and support from Allegro MicroSystems