I I I I I I I I ± 2 A Continuous Output Current Rating 50 V Output Voltage Rating Internal PWM Current Control Internal Transient Suppression Diodes Under-Voltage Lockout Internal Thermal Shutdown Circuitry Crossover-Current Protection Default Brake Current Limit
Always order by complete part number: Part Number A3951SB A3951SW Package 16-Pin DIP 12-Pin Power-Tab SIP RθJA 43°C/W 36°C/W RθJT 6.0°C/W 2.0°C/W
3951
FULL-BRIDGE PWM MOTOR DRIVER.
OUTA LOAD SUPPLY 16 15 14 13 LOAD SUPPLY OUTB GROUND GROUND FULL-BRIDGE PWM MOTOR DRIVER Designed for bidirectional pulse-width modulated current control of inductive loads, the A3951SB and A3951SW are capable of continuous output currents to ±2 A and operating voltages to 50 V. 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 a userselected external RC timing network.
A3951 Datasheet
