A3995 DMOS Dual Full Bridge PWM Motor Driver Features and Benefits Description 36 V output rating The A3995 is designed to drive two DC motors at currents up to 2.4 A, DC motor driver 2.4 A. Capable of drive voltages up to 36 V, the A3995 includes Synchronous rectification two independent fixed off-time PWM current regulators that Internal undervoltage lockout (UVLO) operate in either fast or slow decay mode, as determined by Thermal shutdown circuitry the MODE input. Internal synchronous rectification control Crossover-current protection circuitry is provided to improve power dissipation during Very thin profile QFN package PWM operation. Protection features include: thermal shutdown with hysteresis, undervoltage lockout (UVLO) and crossover current protection. 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 Package: 36 pin QFN height of 0.90 mm, and is lead (Pb) free, with 100% matte tin 0.90 mm nominal height (suffix EV) leadframe plating. Approximate scale 1:1 Typical Application Diagram CP1 CP2 VCP VBB VBB VDD OUT1A OUT1A OUT1B MODE1 OUT1B A3995 PHASE1 SENSE1 ENABLE1 Microcontroller or SENSE1 Controller Logic VREF1 MODE2 PHASE2 OUT2A OUT2A ENABLE2 VREF2 OUT2B OUT2B SENSE2 SENSE2 A3995DS Rev. 2 GND GND GND GNDEV Package 4-layer PCB (R = 27 C/W) JA A3995 DMOS Dual Full Bridge PWM Motor Driver Selection Guide Part Number Packing A3995SEVTR-T 1500 pieces per reel Absolute Maximum Ratings Characteristic Symbol Notes Rating Units -0.5 to 36 V Load Supply Voltage V BB Pulsed t < 1 s38V w Logic Supply Voltage V 0.4 to 7 V DD Continuous 2.4 A * Output Current I OUT Pulsed t < 1s 3.5 A w Logic Input Voltage Range V 0.3 to 7 V IN 0.5 V SENSEx Pin Voltage V SENSEx Pulsed t < 1s 2.5 V w VREFx Pin Voltage V 2.5 V REFx Operating Temperature Range T Range S 20 to 85 C A Junction Temperature T (max) 150 C J Storage Temperature Range T 55 to 150 C stg * 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 150C. Thermal Characteristics (may require derating at maximum conditions) Characteristic Symbol Test Conditions Min. Units Package Thermal Resistance R EV package, 4 layer PCB based on JEDEC standard 27 C/W JA Power Dissipation versus Ambient Temperature 5500 5000 4500 4000 3500 3000 2500 2000 Q 1500 1000 500 0 25 50 75 100 125 150 175 Temperature (C) Allegro MicroSystems, LLC 2 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com Power Dissipation, P (mW) D