
2005 Fairchild Semiconductor Corporation
FAN8741/FAN8742 Rev. 1.0.1
1
www.fairchildsemi.com
April 2005
F
FAN8741/FAN8742
S pindle Motor and 6-CH Driver
[S pindle(PWM), S led 2-CH(PWM) 4-CH(Linear)]
Features
Common
Built-in thermal shutdown circuit (TSD)
8 Independent voltage sources
Corresponds to 3.3V or 5V DSP
4 selectable mute inputs
Spindle
Output PWM mode control
FG output: open collector type
Selectable brake(short & reverse brake)
Built-in hall bias
180
o
commutation(compatible with conventional BLDC spindle
motor)
Built in short-through protection function
BTL(Sled 2-channels)
Output PWM mode control
Built in short-through protection function
BTL(Other 4-channels)
Output linear mode control
Typical Applications
CD-ROM
CD-RW
DVD-ROM
DVD-RAM
DVD Player (DVDP)
Other compact disk media
Game consoles
Description
Suitable for a 3-phase BLDC (Brush-Less Direct Current) spindle
motor driver with PWM, the monolithic FAN8741/FAN8742 IC also
includes 2-ch motor drivers with PWM for sled motors and 4-ch
linear drivers which drive the focus actuator, tracking actuator, tilt
actuator, and loading motor in optical media applications.
Designed specifically for high-speed/high-density optical media
applications, the FAN8741/FAN8742’s power stage is created by
D-MOS transistors which have extremely low RDS
ON
. This
enables less heat generation and guarantees improved reliability.
The
FAN8741G/FAN8742G is available in a 56-SSOP-HS pack-
age, which has high-power dissipation and the leadframe is
exposed to the top side.
The FAN8741MTF/FAN8742MTF is available in a 56-TSSOP-EP
package, which is very thin and the leadframe is exposed to
the bottom side.
Ordering Information
HS=HeatSlug, EP=ExposedPad
X:Tape & Reel type
FAN8741:FG3X
FAN8742:FG1X
Device
FAN8741G
Package
56-SSOP-HS
56-SSOP-HS
56-SSOP-HS
56-SSOP-HS
56-TSSOP-EP
Operating Temp.
25
°
C to +75
°
C
25
°
C to +75
°
C
25
°
C to +75
°
C
25
°
C to +75
°
C
25
°
C to +75
°
C
25
°
C to +75
°
C
25
°
C to +75
°
C
25
°
C to +75
°
C
FAN8741GX
FAN8742G
FAN8742GX
FAN8741MTF
FAN8741MTFX
56-TSSOP-EP
FAN8742MTF
56-TSSOP-EP
FAN8742MTFX
56-TSSOP-EP