A4988

Stepper Motor Driver Module

The A4988 is a stepper motor driver module from Allegro MicroSystems. View the full A4988 datasheet below including key specifications.

Official A4988 datasheet (PDF) — the source this page was extracted from.

Manufacturer

Allegro MicroSystems

A4988 Key Specifications

Parameter	Value
Step Modes	Full, 1/2, 1/4, 1/8, 1/16
Fixed Off-Time	30µs typ (20-40µs)
Output Current	±2A
Package Dimensions	5mm × 5mm × 0.90mm
VDD UVLO Threshold	2.8V typ (rising)
Load Supply Voltage (VBB)	8V to 35V
Logic Supply Voltage (VDD)	3V to 5.5V
Thermal Resistance (RθJA)	32°C/W
Maximum Junction Temperature	150°C
Thermal Shutdown Temperature	165°C (15°C hysteresis)
Operating Ambient Temperature	-20°C to 85°C
Output On-Resistance (Rds(On))	320mΩ typ, 430mΩ max (source or sink, 1.5A)
Sleep Mode Supply Current (IBB)	10µA max
Overcurrent Protection Threshold	2.1A min
Reference Input Voltage Range (VREF)	0V to 4V

A4988 Overview

Part: Allegro A4988 Stepper Motor Driver (Handson Technology Module SKU: DRV1000)

Type: Microstepping Bipolar Stepper Motor Driver

Description: A breakout board for Allegro's A4988 microstepping bipolar stepper motor driver, operating from 8–35V, delivering up to 2A per phase with sufficient cooling, and featuring adjustable current limiting and five micro-step resolutions.

Operating Conditions:

Supply voltage: 8–35V
Logic voltage: 3–5.5V

Absolute Maximum Ratings:

Max operating voltage: 35V
Max continuous current: 2A (with heatsink)
Max junction/storage temperature: null

Key Specs:

Minimum operating voltage: 8V
Maximum operating voltage: 35V
Continuous current per phase: 1A (without heatsink)
Maximum current per phase: 2A (with heatsink)
Minimum logic voltage: 3V
Maximum logic voltage: 5.5V
Micro-step Resolutions: 1, 1/2, 1/4, 1/8, 1/16

Features:

Adjustable current limiting
Overcurrent protection
Over-temperature protection
Five different micro-step resolutions (down to 1/16-step)

Applications:

null

Package:

Module size: 0.6″ × 0.8″

Other Motor Drivers

DRV8833 – Texas Instruments, Dual H-Bridge Motor Driver
DRV8876 – Texas Instruments, H-Bridge Motor Driver
TB6612FNG – Toshiba, Driver IC for Dual DC motor
DRV2605YZFR.A – Texas Instruments, Haptic Driver
DRV2605YZFT.A – Texas Instruments, Haptic Driver
DRV8302 – Texas Instruments, Three-Phase Gate Driver with Dual Shunt Amplifiers and Buck Regulator
DRV8302DCA – Texas Instruments, Three-Phase Gate Driver with Dual Shunt Amplifiers and Buck Regulator
DRV8825 – Texas Instruments, Stepper Motor Controller IC

All Motor Drivers datasheets All Allegro MicroSystems datasheets (14)

Data on this page is extracted from publicly available manufacturer datasheets using automated tools including AI. It may contain errors or omissions. Always verify specifications against the official manufacturer datasheet before making design or purchasing decisions. See our Terms of Service. Rights holders can submit a takedown request.

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