Datasheet A4975 (Allegro) - 2

A4975 Full-Bridge PWM Microstepping Motor Driver DESCRIPTION (CONTINUED)
Internal circuit protection includes thermal shutdown with hysteresis, For both package styles, the thermally enhanced pins are at ground an undervoltage monitor, and crossover-current protection. Special potential and need no electrical isolation. Both packages are lead power-up sequencing is not required. (Pb) free, with 100% matte tin leadframe plating. The A4975 is supplied in a choice of two power packages; a 16-pin dual in-line plastic package with copper heat-sink tabs (suffix ‘B’), and a 16-lead plastic SOIC with internally fused pins (suffix ‘LB’).
SELECTION GUIDE Part Number Packing Package
A4975SB-T * 16-pin DIP with exposed thermal tabs 25 per tube A4975SLBTR-T 16-pin SOICW with internally fused pins 1000 per reel * A4975SB-T 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 2, 2018. For existing customer transition, and for new customers or new appli- cations, use A4975SLBTR-T.
ABSOLUTE MAXIMUM RATINGS Characteristic Symbol Notes Rating Units
Load Supply Voltage VBB 50 V Logic Supply Voltage VCC 6 V Logic/Reference Input Voltage Range VIN –0.3 to 6 V Sense Voltage VS 0.5 V Output current rating may be limited by duty cycle, ambient Output Current, Continuous I temperature, and heat sinking. Under any set of conditions, do OUT not exceed the specified current rating or a junction tempera- ±1.5 A ture of 150
°
C. Package Power Dissipation PD See graph (p. 3) W Operating Ambient Temperature TA Range S –20 to 85 °C Fault conditions that produce excessive junction temperature Maximum Junction Temperature TJ(max) will activate the device’s thermal shutdown circuitry. These 150 °C conditions can be tolerated but should be avoided. Storage Temperature Tstg –55 to 150 °C Allegro MicroSystems, LLC 2 955 Perimeter Road Manchester, NH 03103-3353 U.S.A. www.allegromicro.com