TA7774F

The TA7774F is 2 phase bipolar stepping motor driver IC designed especially for 3.5 or 5.25 inches FDD head actuator drives.It consists of TTL compatible input circuit,dual bridge driver outputs with flyback diodes,changing circuit of motor coil drive voltage(power saving circuit)and stand by circuit.

Features of the TA7774F are:(1)on chip 2 phase bipolar stepping motor driver; (2)power saving and stand-by operation are available; (3)build-in punch through current restriction circuit for system reliability and noise suppression; (4)TTL compatible inputs; (5)surface mount is available with F Type; (6)output current up to 0.4A(peak).

The absolute maximum ratings of the TA7774F can be summarized as:(1)supply voltage:7.0V (VCC) 17.0V(VS1) ~VCCV (VS2); (2)output current:±400mA(IO(PEAK));±350mA(IO(START));±100mA(IO(HOLD)); (3)input voltage:~VCC V; (4)power dissiipation:1.4W; (5)operating temperature:-30~75; (6)storage temperature:-55~150.If you want to know more information such as the electrical characteristics ,please download the datasheet in www.seekdatasheet.com .