A4987SESTR-T

Stepper Motor Controller, 1A, NMOS, 4 X 4MM, 0.75MM HEIGHT, LEAD FREE, MO-220WGGD, QFN-24

Description

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 controlled in full, half, and quarter steps.

Features and Benefits

▪Low RDSONoutputs

▪ 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