Product Summary

The A2919SLBTR-T motor driver is designed to drive both windings of a bipolar stepper motor or bidirectionally control two dc motors. The bridges include both ground clamp and flyback diodes for protection against inductive transients. Internally generated delays prevent crossover currents when switching current direction. Special power-up sequencing is not required. Thermal protection circuitry disables the outputs if the chip temperature exceeds safe operating limits. The A2919SLBTR-T is supplied in a 24-lead surface-mountable SOIC. Their batwing construction provides for maximum package power dissipation in the smallest possible construction.

Parametrics

A2919SLBTR-T absolute maximum ratings: (1)Motor Supply Voltage, VBB : 45 V; (2)Output Current, IOUT (Peak, tw ≤ 20 μs): ±1.0 A; (3)(Continuous): ±750 mA; (4)Logic Supply Voltage, VCC : 7.0 V; (5)Logic Input Voltage Range, VIN : -0.3 V to VCC+0.3 V; (6)Output Emitter Voltage, VE : 1.5 V; (7)Package Power Dissipation, PD : See Graph; (8)Operating Temperature Range, TA : -20°C to +85°C; (9)Storage Temperature Range, TS : -55°C to +150°C.

Features

A2919SLBTR-T features: (1)750 mA Continuous Output Current; (2)45 V Output Sustaining Voltage; (3)Internal Clamp Diodes; (4)Internal PWM Current Control; (5)Low Output Saturation Voltage; (6)Internal Thermal Shutdown Circuitry; (7)Half- or Quarter-Step Operation of Bipolar Stepper Motors.

Diagrams

A2919SLBTR-T pin connection

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A2919SLBTR-T
A2919SLBTR-T


IC MOTOR DRIVER PWM DUAL 24-SOIC

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A2919
A2919

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