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

Número de pieza

componentes Descripción

Fabricante

BD7904FS

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

ROHM Semiconductor 

Optical disc ICs

!Recommended operating conditions (Ta=25°C)

(Set the power supply voltage taking allowable dissipation into considering)

Parameter

Symbol

Min.

POWER MOS Power supply voltage 1

SPVM1, 2

−

POWER MOS Power supply voltage 2

SLRNF

−

Preblock Power supply voltage

SLVDD, VCC AVM

Power block Power supply voltage

AVM

4.3

PWM control block, REG Power supply voltage DVCC

4.3

Spindle output current

Iosp

−

SL/FO/TR/LO output current

Ioo

−

∗3 Set the same supply voltage to VCC and SPVM1, 2 to SLVDD and SLRNF.

∗4 The current is guaranteed 3.0A in case of the current is turned on/off in a duty-ratio of

less than 1/10 with a maximum on-time of 5msec.

Typ.

VCC∗3

SLVDD∗3

12

5.0

5.0

1.0

0.5

Max.

−

−

14

VCC

6.0

2.5∗4

0.8

BD7904FS

Unit

V

V

V

V

V

A

A

!Block diagram

54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28

FG

−

PRE

LOGIC

LEVEL

SHIFT

−

LEVEL

SHIFT

LEVEL

SHIFT

−

LIMIT

FF

+

OSC

FG

REVERSE

DETECT

TSD

PWM

OUT

Current

COMP

FF

OSC

Polarity

COMP

Current

LIMIT

+

BG

(1.3V)

3-phase

MATRIX

+

−

STBY/

BRAKE

CONTROL

VC

+

HALL

BIAS

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27

2/18

Share Link: