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A3995 Scheda tecnica(PDF) 1 Page - Allegro MicroSystems |
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A3995 Scheda tecnica(HTML) 1 Page - Allegro MicroSystems |
1 / 9 page Description TheA3995 is designed to drive two dc motors at currents up to 2.4 A. Capable of drive voltages up to 36V, theA3995 includes two independent fixed off-time PWM current regulators that operate in either fast or slow decay mode, as determined by the MODE input. Internal synchronous rectification control circuitry is provided to improve power dissipation during PWM operation. Protection features include: thermal shutdown with hysteresis, undervoltagelockout(UVLO)andcrossovercurrentprotection. Special power-up sequencing is not required. The A3995 is supplied in a 36 pin QFN package (suffix EV) with exposed power tab for enhanced thermal performance. It has a 6 mm × 6 mm footprint, with a nominal overall package height of 0.90 mm, and is lead (Pb) free, with 100% matte tin leadframe plating. A3995DS Features and Benefits ▪ 36Voutputrating ▪ 2.4Adcmotordriver ▪ Synchronousrectification ▪ Internalundervoltagelockout(UVLO) ▪ Thermalshutdowncircuitry ▪ Crossover-currentprotection ▪ VerythinprofileQFNpackage DMOS Dual Full Bridge PWM Motor Driver Package: 36 pin QFN 0.90 mm nominal height (suffix EV) A3995 Approximate scale 1:1 Typical Application Diagram Microcontroller or Controller Logic MODE1 PHASE1 ENABLE1 VREF1 MODE2 PHASE2 ENABLE2 VREF2 VDD CP1 CP2 VCP VBB VBB OUT1A OUT1B SENSE1 OUT1B OUT1A SENSE1 OUT2A OUT2B SENSE2 OUT2B OUT2A SENSE2 A3995 |
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