BA6665FM

Optical disc ICs

Motor driver for CD-ROMs

BA6665FM

The BA6665FM is a CD-ROM spindle motor driver supporting reverse-rotation preventing circuit. It incorporates power

save circuit, thermal shut down circuit, FG output, hall bias, etc. The 3-phasefall-wave pseudo linear driving system

achieves high-performance and multi-function.

Applications

CD-ROM / RW, DVD-ROM

Features

1) 3-phase, full-wave pseudo linear driving system

2) Built in power save

3) Built in thermal shut down circuit

4) Built in current limit circuit

5) Built in Hall Bias circuit

6) Built in FG-output ( 3 phase parallel output )

7) With switching function of regular / reverse rotations

Absolute maximum ratings (Ta=25

°C)

Parameter

Symbol

Limits

Unit

Supply voltage

7V

V

Supply voltage

15

mW

Power dissipation

Pd

Topr

−20~+75

˚C

˚C

Strage.temp.range

150

mA

Operate.temp.range

Maximum o.current

Juncition temp.

Tstg

Tjmax

−55~+150

˚C

∗1 Derating in done at 17.6mW / ˚C for operating above Ta=25˚C.

70mm

×70mm×1.6mm glass epoxy board.

∗2 Do not, however exceed Pd, ASO and Tj=150˚C.

Recommended operating conditions (Ta=25

°C)

Parameter

Operating supply voltage

range

4.5

5.5

−

3.0

14.0

V

−

Symbol

Min.

Typ.

Max.

Unit