BD7907FS Datasheet, PDF (1/3 Pages) Rohm – 6-channel Combo driver IC

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.
Dimension (Units : mm)
22.0±0.2
54
28
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
1
27
6.0±0.2
0.8
0.36±0.1
0.1
SSOP-A54
0.15±0.1
Applications
CD-ROM, DVD-ROM, and any other equipment driven by optical DISC
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Limits
Unit
Power MOS supply voltage
SPVM1,2,
SLRNF1,2
15
V
Pre/BTL power supply voltage
VCC, SLVDD,
AVM
15
V
PWM control supply voltage
DVCC
7
V
Power dissipation
Pd
2.6 ^*1
W
Operating temperature range
Topr
–35 ~ +85
˚C
Storage temperature range
Tstg
–55 ~ +150
˚C
*Derating : 20.8mW/˚C for operation above Ta=25˚C PCB (70mm ¥ 70mm ¥ 1.6mm glass epoxy board)
January, 2002