01W138A
6-channel Combo driver IC
BD7907FS
Description
BD7907FS is a 6-channel driver IC that integrates all
drivers necessary for CD-ROM, and DVD-ROM systems
into a single chip. The built-in 2-channel sled motor
driver is used for the stepping motor. Low heat operation
can be achieved by applying the PWM driving system for
sled and spindle motor drivers.
Features
1) Motor drivers for spindle, sled (2-channel) and
loading, and actuator drivers for tracking are all
integrated into a single chip.
2) ON/OFF for each driver, brake mode switching of
spindle and stand-by mode switching can be
controlled by 2-wire serial data.
3) Built-in triangular-wave generator
4) SSOP-A54 package
5) Built-in thermal shut-down circuit
<
Spindle driver
>
6) Highly efficient by applying the PWM drive and
Low ON resistance POWER MOSFET
7) Built-in current limit, hall bias, short brake, FG 3-phase
synthesis output, and reverse protection circuit
<
Sled motor driver
>
8) Highly efficient due to the PWM drive
9) Built-in 2-channel for the stepping motor
<
Actuator, loading driver
>
10) Low noise due to the linear BTL driver and smooth spin
Dimension (Units : mm)
22.0
鹵
0.2
54
28
13.4
鹵
0.3
11.4
鹵
0.2
4.0
鹵
0.2
1
2.2
鹵
0.1
6.0
鹵
0.2
27
0.15
鹵
0.1
0.1
0.8
0.36
鹵
0.1
0.1
SSOP-A54
Applications
CD-ROM, DVD-ROM, and any other equipment driven by optical DISC
Absolute Maximum Ratings
(Ta=25藲C)
Parameter
Power MOS supply voltage
Pre/BTL power supply voltage
PWM control supply voltage
Power dissipation
Operating temperature range
Storage temperature range
Symbol
SPVM1,2,
SLRNF1,2
VCC, SLVDD,
AVM
Limits
15
15
7
2.6
鈥?5
鈥?5
~
~
*
1
+
85
+
150
Unit
V
V
V
W
DVCC
Pd
Topr
Tstg
藲C
藲C
*Derating : 20.8mW/藲C for operation above Ta=25藲C PCB (70mm 樓 70mm 樓 1.6mm glass epoxy board)
January, 2002
0.3Min.
1
2
3
