A3995SEVTR-T

A3995 DMOS Dual Full Bridge PWM Motor Driver Discontinued Product This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available. Date of status change: July 1, 2019 Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the A5995GEVTR-T. NOTE: For detailed information on purchasing options, contact your local Allegro field applications engineer or sales representative. Allegro MicroSystems reserves the right to make, from time to time, revisions to the anticipated product life cycle plan for a product to accommodate changes in production capabilities, alternative product availabilities, or market demand. The information included herein is believed to be accurate and reliable. However, Allegro MicroSystems assumes no responsibility for its use; nor for any infringements of patents or other rights of third parties which may result from its use. A3995 DMOS Dual Full Bridge PWM Motor Driver FEATURES AND BENEFITS ▪ ▪ ▪ ▪ ▪ ▪ ▪ DESCRIPTION 36 V output rating 2.4 A, DC motor driver Synchronous rectification Internal undervoltage lockout (UVLO) Thermal shutdown circuitry Crossover-current protection Very thin profile QFN package The A3995 is designed to drive two DC motors at currents up to 2.4 A. Capable of drive voltages up to 36 V, the A3995 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, 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 height of 0.90 mm, and is lead (Pb) free, with 100% matte tin leadframe plating. PACKAGE: 36-pin QFN 0.90 mm nominal height (suffix EV) Not to scale Typical Application Diagram CP1 CP2 VCP VDD VBB OUT1A OUT1A MODE1 A3995 PHASE1 Microcontroller or Controller Logic VBB OUT1B OUT1B SENSE1 SENSE1 ENABLE1 VREF1 MODE2 PHASE2 OUT2A OUT2A ENABLE2 A3995DS Rev. 4 MCO-0000501 GND GND OUT2B OUT2B GND GND VREF2 SENSE2 SENSE2 July 1, 2019 A3995 DMOS Dual Full Bridge PWM Motor Driver SELECTION GUIDE Part Number Packing A3995SEVTR-T 1500 pieces per reel ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Load Supply Voltage VBB Logic Supply Voltage VDD Output Current* IOUT Logic Input Voltage Range VIN SENSEx Pin Voltage VREFx Pin Voltage Operating Temperature Range Junction Temperature Storage Temperature Range VSENSEx Notes Pulsed tw < 1 µs Rating Units –0.5 to 36 V 38 V –0.4 to 7 V Continuous 2.4 A Pulsed tw < 1µs 3.5 A Pulsed tw < 1µs VREFx –0.3 to 7 V 0.5 V 2.5 V 2.5 V –20 to 85 °C TJ(max) 150 °C Tstg –55 to 150 °C TA Range S * 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. THERMAL CHARACTERISTICS: May require derating at maximum conditions Package Thermal Resistance Symbol RθJA Test Conditions EV package, 4-layer PCB based on JEDEC standard Min. Units 27 °C/W Power Dissipation versus Ambient Temperature 5500 5000 4500 4000 Power Dissipation, PD (mW) Characteristic 3500 3000 2500 2000 1500 EV Package 4-layer PCB (RθJA = 27 ºC/W) 1000 500 0 25 50 75 100 125 Temperature (°C) 150 175 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 2 A3995 DMOS Dual Full Bridge PWM Motor Driver VDD CHARGE PUMP OSC VBB VBB VCP CP1 CP1 Functional Block Diagram DMOS Full Bridge 1 VCP MODE1 OUT1A CONTROL LOGIC PHASE1 OUT1A OUT1B GATE DRIVE VREF1 3 OUT1B PWM Latch BLANKING SENSE1 SENSE1 + Sense1 - ENABLE1 RS1 DMOS Full Bridge 2 VCP MODE2 OUT2A CONTROL LOGIC PHASE2 OUT2A GATE DRIVE ENABLE2 VREF2 + Sense2 OUT2B PWM Latch BLANKING - 3 OUT2B Sense2 SENSE2 GND GND GND GND NC NC NC NC NC NC SENSE2 RS2 Allegro MicroSystems 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com 3 A3995 DMOS Dual Full Bridge PWM Motor Driver ELECTRICAL CHARACTERISTICS [1]: Valid at TA = 25°C, VBB = 36 V, unless otherwise noted Characteristics Symbol Test Conditions Min. Typ. [2] Max. Units V Load Supply Voltage Range VBB Operating 8.0 – 36 Logic Supply Voltage Range VDD Operating 3.0 – 5.5 V VDD Supply Current IDD – 7 10 mA Output On Resistance RDS(on) Vf , Outputs Source driver, IOUT = –1.2 A, TJ = 25°C – 350 450 mΩ Sink driver, IOUT = 1.2 A, TJ = 25°C – 350 450 mΩ IOUT = 1.2 A Output Leakage IDSS Outputs, VOUT = 0 to VBB VBB Supply Current IBB IOUT = 0 mA, outputs on, fPWM = 50 kHz, DC = 50% – – 1.3 V –20 – 20 µA – – 8 mA CONTROL LOGIC Logic Input Voltage Logic Input Current VIN(1) 0.7 × VDD – – V VIN(0) – – 0.3 × VDD V –20