Allegro MicroSystems A5985
The A5985 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. It has an output drive capacity of up to 40 V and ±2 A.| Part No. | A5985 |
|---|---|
| Datasheet | A5985 Download |
| Manufacturer |  Allegro MicroSystems |
| Description | DMOS Microstepping Driver |
| Buy | Stock & Price |
FEATURES AND BENEFITS
● Drop-in replacement for A4988● 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
● Thin profile QFN
● Thermal shutdown circuitry
● Synchronous rectification for low power dissipation
● Internal UVLO
● Crossover-current protection
APPLICATIONS
● Video Security Cameras● Printers
● Scanners
● Robotics
● ATM
● POS PACKAGE: Not to scale 28-contact QFN with exposed thermal pad 5 mm × 5 mm × 0.90 mm (ET package)
DESCRIPTION
Step modes are selectable by MSx logic inputs. The A5985 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.
