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BD7904FS Datasheet(Hoja de datos) 3 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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 3 page
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BD7904FS
Optical disc ICs
3/18
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!
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Pin descriptions
Pin No.
Pin name
Function
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
HU
+
HU
HV
+
HV
SPVM1
HW
+
HW
CTL1
CTL2
U
V
GND
GND
GND
GND
GND
PGND
W
VC
SPIN
SPRNF
HB
SPVM2
DGND
DVCC
REGOUT
REGNF
Hall amp. U positive input
Hall amp. U negative input
Hall amp. V positive input
Hall amp. V negative input
Spindle driver power supply 1
Hall amp. W positive input
Hall amp. W negative input
Driver logic control input 1
Driver logic control input 2
Spindle driver output U
Spindle driver output V
GND
GND
GND
GND
GND
Spindle driver power ground
Spindle driver output W
Reference voltage input
Spindle driver input
Spindle driver current sense
Hall bias
Spindle driver power supply 2
PWM block pre-ground
PWM block control power supply
Regulator output voltage pin
Regulator return pin
Pin No.
Pin name
Function
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
REGGND
TKOPI
TKOPO
AVM
FCOPI
FCOPO
FCO
FCO
+
TKO
TKO
+
AGND
GND
GND
GND
GND
GND
VCC
LDO
LDO
+
SLO
SLO
+
SLVDD
SLOPO
SLOPI
SLRNF
LDIN
FG
Regulator block ground
Tracking driver OP-AMP-input
Tracking driver OP-AMP output
Actuator driver block power supply
Focus driver OP-AMP-input
Focus driver OP-AMP output
Focus driver negative output
Focus driver positive output
Tracking driver negative output
Tracking driver positive output
Ground
GND
GND
GND
GND
GND
BTL pre and Loading power supply
Loading driver negative output
Loading driver positive output
Sled driver negative output
Sled driver positive output
Sled driver PowerMOS pre-supply
Sled driver OP-AMP output
Sled driver OP-AMP- input
Sled driver current sense
Loading driver input
Frequency generator output
∗ Positive/negative of the output terminals are determined in reference to those of the input terminals.




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