BA6668FM Datasheet, PDF (1/3 Pages) Rohm – 3-Phase Motor Driver For CD-ROM/R-RW,DVD-ROM/RAM

00W003A
3-Phase Motor Driver For CD-ROM/R-RW,DVD-ROM/RAM
BA6668FM
Description
Dim ension (Uni ts:mm)
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
Applications
CD-R/RW, DVD-ROM/RAM, CD-ROM
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Limits
Supply voltage
Supply voltage
Power dissipation
V_CC
7
V_M
15
Pd
2200
*1
Operating temperature range Topr
–20 ~ ⁺⁷⁵
Storage temperature range
Tstg
–55 ~ +150 ^*2
Maximum output current
Iout
1500
*2
*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
Unit
V
V
mW
˚C
˚C
mA
HSOP-M28
January, 2000