BD7904FS Ver la hoja de datos (PDF) - ROHM Semiconductor

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BD7904FS

5ch Power Driver for CD-ROM, DVD-ROM

ROHM Semiconductor 

Optical disc ICs

5ch Power Driver for

CD-ROM, DVD-ROM

BD7904FS

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.

!Applications

CD-ROM, DVD-ROM

!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.

!Absolute maximum ratings (Ta=25°C)

Parameter

Symbol

Limits

Unit

POWER MOS

power suuply voltage

SPVM1,2,SLRNF

15∗1

V

Preblock/BTL powerblock

power supply voltage

VCC,SLVDD,AVM

15

V

PWM control block, REG

power supply voltage

DVCC

7

V

Power dissipation

Operating temperature range

Pd

Topr

2.6∗2

W

−35~+85

°C

Storage temperature

Tstg

−55~+150

°C

∗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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