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BD7904FS Datasheet(Hoja de datos) 2 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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 2 page
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BD7904FS
Optical disc ICs
2/18
!
!
!
!
Recommended operating conditions (Ta=25
°C)
(Set the power supply voltage taking allowable dissipation into considering)
Parameter
Symbol
Max.
Typ.
Min.
Unit
SPVM1, 2
SLRNF
VCC∗3
SLVDD∗3
V
V
SLVDD, VCC
VCC
AVM
14
12
AVM
5.0
4.3
V
V
DVCC
2.5∗4
Iosp
6.0
5.0
4.3
1.0
V
A
0.8
Ioo
0.5
A
POWER MOS Power supply voltage 1
POWER MOS Power supply voltage 2
Preblock Power supply voltage
Power block Power supply voltage
PWM control block, REG Power supply voltage
Spindle output current
SL/FO/TR/LO output current
∗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.
!
!
!
!
Block diagram
1
14
15
16
17
18
19
20
21
22
23
24
25
26
27
2
3
10
9
12
13
11
6
4
5
7
8
54
41
40
39
38
37
36
35
34
33
32
31
30
29
28
53
52
45
46
43
42
44
49
51
50
48
47
FF
Current
LIMIT
HALL
BIAS
FG
REVERSE
DETECT
Current
COMP
OSC
Polarity
COMP
PWM
OUT
LIMIT
PRE
LOGIC
FF
OSC
LEVEL
SHIFT
STBY/
BRAKE
CONTROL
LEVEL
SHIFT
LEVEL
SHIFT
TSD
3-phase
MATRIX
VC
BG
(1.3V)
+
+
+
FG
+
+




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