SLA7032M - Sanken electric

SLA7032M 2-Phase Stepper Motor Unipolar Driver ICs

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) Chopping OFF timer (12 µ s typ) + − + − Chopping OFF timer (12 µ s typ) 1pin 8pin 11pin 18pin Excitation input Active H Active L O.

Features

of SLA7024M (SLA7026M). The basic function pins are compatible with those of SLA7024M (SLA7026M). the SYNC terminals open because they are for CMOS input. 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 at when the motor is running, the motor torque deteriorates before the coil.