By Allegro MicroSystems, LLC 63
Allegro MicroSystems' A3916 is designed for pulse-width-modulated (PWM) control of low voltage stepper motors and single and dual DC motors. The A3916 is capable of output currents up to 1 A per channel and operating voltages from 2.7 V to 15 V. The A3916 has an internal fixed off-time PWM timer that sets a peak current based on the selection of a current sense resistor. An output fault flag is provided that notifies the user of a TSD or overcurrent protection event. The A3916 is supplied in a low-profile 3 mm x 3 mm 16-terminal QFN and in a low-profile 4 mm x 4 mm 20-terminal QFN, both with exposed power tab for enhanced thermal dissipation. The A3916 replaces the A3906 with additional needed features to remain competitive with parts from other manufacturers.
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