Allegro MicroSystems A5988
The A5988 is a quad DMOS full-bridge driver capable of driving up to two stepper motors or four DC motors. Each full-bridge output is rated up to 1.6 A and 40 V. The A5988 includes fixed off-time pulse-width modulation (PWM) current regulators, along with 2- bit nonlinear DACs (digital-to-analog converters) that allow stepper motors to be controlled in full, half, and quarter steps, and DC motors in forward, reverse, and coast modes.- Min Voltage : 8V
- Max Voltage : 40V
- Max Operating Temp : 105°C
- Min Operating Temp : -40°C
Source:
Octopart
| Part No. | A5988 |
|---|---|
| Datasheet | A5988 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | Quad DMOS Full-Bridge PWM Motor Driver |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● 40 V output rating● 4 full bridges
● Dual stepper motor driver
● High-current outputs
● 3.3 and 5 V compatible logic
● Synchronous rectification
● Internal undervoltage lockout (UVLO)
● Thermal shutdown circuitry
● Crossover-current protection
● Overcurrent protection
● Low-power sleep mode
● Low-profile QFN package PACKAGES Package EV, 36-pin QFN 0.90 mm nominal height with exposed thermal pad Package JP, 48-pin LQFP with exposed thermal pad Not to scale
DESCRIPTION
The PWM current regulator uses the Allegro™ patented mixed decay mode for reduced audible motor noise, increased step accuracy, and reduced power dissipation. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Protection features include thermal shutdown with hysteresis, undervoltage lockout (UVLO) and crossover-current protection. Special power-up sequencing is not required. The A5988 is supplied in two packages, EV and JP, with exposed power tabs for enhanced thermal performance.
