A4973SLBTR-T

The A4973SLBTR-T is a full-bridge PWM Motor Driver designed for bidirectional pulse width modulated (PWM) current control of inductive loads, the A4973 is capable of continuous output currents to ±1.5A and operating voltages to 50V. Internal fixed off-time PWM current-control circuitry can be used to regulate the maximum load current to a desired value. The peak load current limit is set by the user's selection of an input reference voltage and external sensing resistor. The fixed off-time pulse duration is set by user-selected external RC timing network. Internal circuit protection includes thermal shutdown with hysteresis, transient-suppression diodes and crossover-current protection. Special power-up sequencing is not required. With the ENABLE input held low, the PHASE input controls load current polarity by selecting the appropriate source and sink driver pair.

• Internal PWM current control
• Fast and slow current-decay modes
• Sleep (low current consumption) mode
• Internal transient-suppression diodes
• Internal thermal shutdown circuitry
• Crossover-current and UVLO protection
• -0.3 to 6V Logic/reference input voltage range
• 0.5V Sense voltage
• 6A Transient output current (<lt/>2μs)

Applications

Motor Drive & Control