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A5988 Quad DMOS Full-Bridge PWM Motor Driver

Allegro MicroSystems

A5988: Quad DMOS Full-Bridge PWM Motor Driver

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. 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. The EV is a 6 mm × 6 mm, 36-pin QFN package with a nominal overall package height of 0.90 mm. The JP is a 7 mm × 7 mm 48-pin LQFP. Both packages are lead (Pb) free, with 100% matte tin leadframe plating.

Product Number: A5988

Class: Integrated Circuits (ICs), Power Management (PMIC), Motor Drivers, Stepper Motor Drivers, DMOS Microstepping Driver

Tag: Stepper Motor Drivers, Quad DMOS Full-Bridge PWM Motor Driver, Motor, Motion

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

Part Number Type Operating Supply Current Technology Mounting Style Output Current Interface Applications Output Voltage Operating Temperature Operating Supply Voltage Package Type
A5988 Microstepping 4 mA DMOS SMD/SMT 1.6 A PWM General Purpose 40 V -40 °C ~ 150 °C(TJ) 8V ~ 40V Package EV, 36-pin QFN 0.90 mm nominal height with exposed thermal pad
Package JP, 48-pin LQFP with exposed thermal pad

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    Datasheet Download on Jun, 2022

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