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FAN8742MTFX Datasheet

  • FAN8742MTFX

  • Spindle Motor and 6-CH Driver

  • 543.13KB

  • 23頁

  • FAIRCHILD

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FAN8741/FAN8742 Spindle motor and 6-CH actuator driver
April 2005
FAN8741/FAN8742
Spindle Motor and 6-CH Driver
[Spindle(PWM), Sled 2-CH(PWM) 4-CH(Linear)]
Features
Common
鈥?Built-in thermal shutdown circuit (TSD)
鈥?8 Independent voltage sources
鈥?Corresponds to 3.3V or 5V DSP
鈥?4 selectable mute inputs
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鈥檚 power stage is created by
D-MOS transistors which have extremely low RDS
ON
. This
enables less heat generation and guarantees improved reliability.
Spindle
鈥?Output PWM mode control
鈥?FG output: open collector type
鈥?Selectable brake(short & reverse brake)
鈥?Built-in hall bias
鈥?180 commutation(compatible with conventional BLDC spindle
motor)
鈥?Built in short-through protection function
o
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.
BTL(Sled 2-channels)
鈥?Output PWM mode control
鈥?Built in short-through protection function
BTL(Other 4-channels)
鈥?Output linear mode control
Ordering Information
Device
Package
56-SSOP-HS
56-SSOP-HS
56-SSOP-HS
56-SSOP-HS
56-TSSOP-EP
56-TSSOP-EP
Operating Temp.
鈭?5擄C
to +75擄C
鈭?5擄C
to +75擄C
鈭?5擄C
to +75擄C
鈭?5擄C
to +75擄C
鈭?5擄C
to +75擄C
鈭?5擄C
to +75擄C
鈭?5擄C
to +75擄C
鈭?5擄C
to +75擄C
FAN8741G
FAN8741GX
FAN8742G
FAN8742GX
FAN8741MTF
Typical Applications
鈥?CD-ROM
鈥?CD-RW
鈥?DVD-ROM
鈥?DVD-RAM
鈥?DVD Player (DVDP)
鈥?Other compact disk media
鈥?Game consoles
FAN8741MTFX
56-TSSOP-EP
FAN8742MTF
FAN8742MTFX
56-TSSOP-EP
HS=HeatSlug, EP=ExposedPad
X:Tape & Reel type
FAN8741:FG3X
FAN8742:FG1X
漏2005 Fairchild Semiconductor Corporation
1
www.fairchildsemi.com
FAN8741/FAN8742 Rev. 1.0.1

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