A3950SLP-T Allegro

A3950 DMOS Full-Bridge Motor Driver Features and Benefits Description Low R outputs Designed for PWM (pulse width modulated) control of DC DS(on) Overcurrent protection motors, the A3950 is capable of peak output currents to 2.8 A Motor lead short-to-supply protection and operating voltages to 36 V. Short-to-ground protection PHASE and ENABLE input terminals are provided for use in Sleep function controlling the speed and direction of a DC motor with externally Synchronous rectification applied PWM control signals. Internal synchronous rectification Diagnostic output control circuitry is provided to lower power dissipation during Internal undervoltage lockout (UVLO) PWM operation. Crossover-current protection Internal circuit protection includes motor lead short-to- supply / short-to-ground, thermal shutdown with hysteresis, undervoltage monitoring of V and V , and crossover-current BB CP protection. Packages: The A3950 is supplied in a thin profile (<1.2 mm overall height) 16 pin TSSOP package (LP), and a very thin (0.75 mm nominal Package LP, 16 pin TSSOP Package EU, 16 pin QFN with Exposed Thermal Pad with Exposed Thermal Pad height) QFN package. Both packages provide an exposed pad for enhanced thermal dissipation, and are lead (Pb) free with 100% matte tin leadframe plating. Approximate Scale 1:1 Typical Application Diagrams V BB 0.22 F 25 V 0.1 F 50 V V BB NC 0.22 F NFAULT 25 V PHASE V GND VREG DD MODE V 0.1 F DD 100 F 50 V 50 V PHASE VCP GND CP2 5 k 5 k GND GND A3950 A3950 SLEEP CP1 EU Package LP Package CP2 SLEEP 100 F 0.1 F 50 V 50 V CP1 ENABLE ENABLE OUTB 0.1 F 50 V OUTB OUTA SENSE VBB 0.1 F 50 V 0.1 F 50 V Package EU Package LP A3950DS, Rev. 7 NC MODE OUTA NFAULT SENSE VREG VBB VCPA3950 DMOS Full-Bridge Motor Driver Selection Guide Part Number Packing Package A3950SLPTR-T 13 in. reel, 4000 pieces / reel 16 pin TSSOP with exposed thermal pad A3950SEUTR-T 7 in. reel, 1500 pieces / reel 16 pin QFN with exposed thermal pad Absolute Maximum Ratings Characteristic Symbol Notes Rating Units Load Supply Voltage V 36 V BB Output Current I 2.8 A OUT Transient Output Current I T < 500 ns 6 A OUT W Sense Voltage V 500 mV SENSE VBB to OUTx 36 V OUTx to SENSE 36 V Logic Input Voltage V 0.3 to 7 V IN Operating Ambient Temperature T Range S 20 to 85 C A Maximum Junction Temperature T (max) 150 C J Storage Temperature T 40 to 125 C stg Allegro MicroSystems, LLC 2 115 Northeast Cutoff, Box 15036 Worcester, Massachusetts 01615-0036 (508) 853-5000 www.allegromicro.com