Product Summary

The A3957SLB-A is a full-bridge pwm microstepping motor driver. It is designed for driving one winding of a bipolar stepper motor in a microstepping mode. The outputs are rated for continuous output currents to ±1.5 A and operating voltages to 50 V.

Parametrics

A3957SLB-A absolute maximum ratings: (1)Load Supply Voltage, VBB: 50 V; (2)Output Current, IOUT (Continuous): ±1.5 A; (3)Logic Supply Voltage, VCC: 7.0 V; (4)Logic/Reference Input Voltage Range, VIN: -0.3 V to VCC + 0.3 V; (5)Sense Voltage, VS: 1.0 V; (6)Package Power Dissipation (TA = 25℃), PD: 2.23 W; (7)Operating Temperature Range, TA: -20℃ to +85℃; (8)Junction Temperature, TJ: +150℃; (9)Storage Temperature Range, TS: -55℃ to +150℃.

Features

A3957SLB-A features: (1)±1.5 A Continuous Output Current; (2)50 V Output Voltage Rating; (3)Internal PWM Current Control; (4)4-Bit Non-Linear DAC for 16-Bit Microstepping; (5)Satlington. Sink Drivers; (6)Fast, Mixed Fast/Slow, and Slow Current-Decay Modes; (7)Internal Transient-Suppression Diodes; (8)Internal Thermal-Shutdown Circuitry; (9)Crossover-Current and UVLO Protection.

Diagrams

A3957SLB-A block diagram

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