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藲C)
Parameter
Supply voltage
Supply voltage
Power dissipation
Operating temperature range
Storage temperature range
Maximum output current
Symbol
V
CC
V
M
Pd
T
opr
T
stg
Iout
Limits
7
15
2200
鈥?0 ~ +75
鈥?5 ~ +150
1500
*1
Unit
V
V
mW
藲C
*2
*2
藲C
mA
*
1 Derating : 17.6mW/藲C for operation above Ta=25藲C.
70mm
樓
70mm
樓
1.6mm glass epoxy board.
*
2 Do not, however exceed Pd, ASO and Tj=150藲C
January, 2000
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