BA6668FM

00W003A 3-Phase Motor Driver For CD-ROM/R-RW,DVD-ROM/RAM BA6668FM Description Dim ension (Uni ts:m m) The BA6668FM is a motor driver developed for CD-R RW spindle motors. This IC has a junction temperature alarm pin, a gain switch and a limit switch pin. A power save, thermal shut down, current limit, rotation detector, and a reverse protection circuit are all included. Gain and Limit can be switched by the control pin. Features 1)3-phase, full-wave pseudo linear driving system 2)Built-in power save, thermal shut down circuit 3)Built-in current limit, Hall Bias circuit 4)Built-in FG-output, FG3-phase synthesized output 5)Built-in rotation detector 6)Built-in reverse protection circuit 7)Built-in Limit switch and Gain switch pin 8)Built-in Short Brake pin 9)Built-in junction temperature alarm pin 10)Suitable for 3.3V DSP HSOP-M28 Applications CD-R/RW, DVD-ROM/RAM, CD-ROM Absolute Maximum Ratings (Ta=25˚C) Parameter Supply voltage Supply voltage Power dissipation Operating temperature range Storage temperature range Maximum output current Symbol VCC VM Pd Topr Tstg Iout Limits 7 15 2200 –20 ~ +75 –55 ~ +150 1500 *1 Unit V V mW ˚C *2 *2 ˚C mA *1 Derating : 17.6mW/˚C for operation above Ta=25˚C. 70mm ¥ 70mm ¥ 1.6mm glass epoxy board. *2 Do not, however exceed Pd, ASO and Tj=150˚C January, 2000 Recommended Operating Conditions (Ta=25˚C) Parameter Operating supply voltage range Symbol VCC VM Limits 4.5 ~ 5.5 3.0 ~ 14 Unit V V Electrical characteristics (Unless other...