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A3976 Datasheet PDF

Allegro MicroSystems A3976

The A3976 is designed to drive both windings of a bipolar stepper motor or bidirectionally control two DC Motors. Both H-Bridges are capable of continuous output currents of up to +/- 500 mA and operating voltages to 27V. For each bridge the PHASE input controls load current polarity by selecting the appropriate source and sink driver pair.
Part No. A3976
Datasheet A3976 Download
Manufacturer
Allegro MicroSystems
Description Dual Full Bridge Protected Motor Driver
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A3976 datasheet page 1 preview

ABSOLUTE MAXIMUM RATINGS

at TA = +25°C Operating Supply Voltage, VBB .................... 27 V Non-Operating Supply Voltage .................... 35 V Output Current, IOUT ............................±500 mA* Logic Supply Voltage, VCC.......................... 7.0 V Fault Output Voltage ................................... 7.0 V Logic Input Voltage Range, VIN ......................... -0.3 V to VCC + 0.3 V Package Power Dissipation (TA = +25°C), PD A3976KLB.................................. 2.2 W Operating Temperature Range, TA .............................. -40°C to +125°C Junction Temperature, TJ ......................... +150°C Storage Temperature Range, TS .............................. -55°C to +150°C * Output current rating may be limited by duty cycle, ambient temperature, and heat sinking. Under any set of conditions, do not exceed the specified current rating or a junction temperature of 150°C. Free wheeling, substrate isolated diodes are included for output transient suppression when switching motors or other inductive loads.
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