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PDF BD7907FS Data sheet ( Hoja de datos )

Número de pieza BD7907FS
Descripción 6-channel Combo driver IC
Fabricantes ROHM Semiconductor 
Logotipo ROHM Semiconductor Logotipo



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

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