The A4987 is a dual DMOS full-bridge stepper motor driver with parallel input communication and overcurrent protection. Each full-bridge output is rated up to 35 V and ±1 A. The A4987 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 control.
▪ Low RDS(ON) outputs ▪ Internal mixed current decay mode ▪ Synchronous rectification for low power dissipation ▪ Internal UVLO ▪ Crossover-current protection ▪ 3.3 and 5 V compatible logic supply ▪ Thin profile QFN and TSSOP packages ▪ Thermal shutdown circuitry ▪ Short-to-ground protection ▪ Shorted load protection ▪ Low current Sleep mode, < 10 µA PACKAGES: 24-contact QFN 4 mm × 4 mm × 0.75 mm (ES package) Approximate footprint 24-pin TSSOP with exposed thermal pad (LP Package) DESCRIPTION The A4987 is a dual DMOS full-bridge stepper motor driver with parallel input communication and .
No. | Partie # | Fabricant | Description | Fiche Technique |
---|---|---|---|---|
1 | A4980 |
Allegro |
Automotive Programmable Stepper Driver | |
2 | A4982 |
Allegro |
DMOS Microstepping Driver | |
3 | A4983 |
Allegro MicroSystems |
DMOS Microstepping Driver | |
4 | A4984 |
Allegro |
DMOS Microstepping Driver | |
5 | A4985 |
Allegro |
DMOS Microstepping Driver | |
6 | A4986 |
Allegro MicroSystems |
DMOS Dual Full-Bridge PWM Motor Driver | |
7 | A4988 |
Allegro |
DMOS Microstepping Driver | |
8 | A4988SETTR-T |
Allegro |
DMOS Microstepping Driver | |
9 | A4989 |
Allegro |
Dual Full-Bridge MOSFET Driver | |
10 | A4910 |
Allegro |
Automotive 3-Phase MOSFET Driver | |
11 | A4915 |
Allegro MicroSystems |
3-Phase MOSFET Driver | |
12 | A4919 |
Allegro MicroSystems |
Three-Phase MOSFET Driver |