DESCRIPTION
The TEA3717 is a bipolar monolithic integrated circuit intended to control and drive the current in one winding of a bipolar stepper motor. The circuit consists of an LS-TTL compatible logic input, a current sensor, a monostable and an output stage with builtin protection diodes. Two TEA3717 and a few external components form a complete control and drive unit for LS-TTL or microprocessor-controlled stepper motor systems.

■ HALF-STEP AND FULL-STEP MODE
■ BIPOLAR DRIVE OF STEPPER MOTOR FOR MAXIMUM MOTOR PERFORMANCE
■ BUILT-IN PROTECTION DIODES
■ WIDE RANGE OF CURRENT CONTROL 5 TO 1000 mA
■ WIDE VOLTAGE RANGE 10 TO 45 V
■ DESIGNED FOR UNSTABILIZED MOTOR SUPPLY VOLTAGE
■ CURRENT LEVELS CAN BE SELECTED IN STEPS OR VARIED CONTINUOUSLY