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BD7904FS Datasheet(Hoja de datos) 1 Page - Rohm

No. de Pieza. BD7904FS
Descripción  5ch Power Driver for CD-ROM, DVD-ROM
Descarga  18 Pages
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Fabricante  ROHM [Rohm]
Página de inicio  http://www.rohm.com
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BD7904FS
Optical disc ICs
1/18
5ch Power Driver for
CD-ROM, DVD-ROM
BD7904FS
BD7904FS is a 5-channel driver IC that integrates all drivers and 3.3V regulator necessary for CD-ROM, and DVD-ROM
systems into a single chip. Low head operation can be achieved by applying the PWM driving system for sled and
spindle motor drivers.
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Applications
CD-ROM, DVD-ROM
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Features
1) 3channel BTL driver, 1channel PWM driver and 3phase motor driver.
- ALL of the motor and actuator for CD-ROM, DVD-ROM etc.
2) ON/OFF for each driver, brake mode switching of spindle, and stand-by mode switching can be controlled by the two
control terminals.
3) Built-in triangular-wave generator.
4) SSOP-A54 for strong head radiation.
5) Built in thermal-shut-down circuit.
6) FG 3phase synthetic output.
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Absolute maximum ratings (Ta=25
°C)
Parameter
Symbol
Unit
SPVM1,2,SLRNF
VCC,SLVDD,AVM
DVCC
Pd
Topr
Tstg
Limits
−55~+150
15∗1
15
7
2.6∗2
−35~+85
V
V
V
W
°C
°C
POWER MOS
power suuply voltage
Preblock/BTL powerblock
power supply voltage
PWM control block, REG
power supply voltage
Power dissipation
Operating temperature range
Storage temperature
∗1 POWER MOS output terminals (10, 11, 18, 47, 48pin) is contained.
∗2 PCB (70mm×70mm×1.6mm glass epoxy) mounting.
Reduced by 20.8mW for each increase in Ta of 1
°C over 25°C.




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