SMA7036M - Sanken electric

SMA7036M 2-Phase Stepper Motor Unipolar Driver IC

of pins Reg. Oscillator MOSFET gate drive circuit Synchronous chopping circuit Reg. Chopping blanking timer (5 µ s typ) + − Oscillator MOSFET gate drive circuit Synchronous chopping circuit Chopping blanking timer (5 µ s typ) + − 1pin 6pin 10pin 15pin Excitation input Active H Active L OUT A OUT A OUT A OUT A OUT B OUT B OUT B OUT B Chopping OFF timer (.

Features

of SMA7029M. The basic function pins are compatible with those of SMA7029M. Connect TTL or similar to the SYNC terminals and switch the SYNC terminal level high or low. When the motor is not running, set the TTL signal high (SYNC terminal voltage: 4 V or more) to make chopping synchronous. When the motor is running, set the TTL signal low (SYNC terminal voltage: 0.8 V or less) to make chopping asynchronous. If chopping is set to synchronous when the motor is running, the motor torque deteriorates before the coil current reaches the set value. If no abnormal noise occurs when the motor is not .