BD7904FS Ver la hoja de datos (PDF) - ROHM Semiconductor
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BD7904FS Datasheet PDF : 18 Pages
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Optical disc ICs
BD7904FS
!Electrical characteristics
(unless otherwise noted, Ta=25°C, SLVDD=VCC=12V, DVCC=AVM=5V, VC=1.65V, SPRNF=0.33Ω, SLRNF=0.5Ω)
Parameter
Symbol Min. Typ. Max. Unit
Conditions
Circuit
Circuit current
Quiescent current 1
IQ1
−
11
19
mA VCC (Loading OFF)
Fig1, 2
Quiescent current 2
IQ2
−
9.5
16
mA VCC (Loading ON)
Fig1, 2
Quiescent current 3
IQ3
Standby-on current 1
IST1
Standby-on current 2
IST2
Spindle driver block 〈 Hall bias 〉
−
3.5
6.5
mA DVCC
−
2.2
3.7
mA VCC
−
0.65
1.0
mA DVCC
Fig1, 2
Fig1, 2
Fig1, 2
Hall bias voltage
VHB
0.7
1.2
1.6
V IHB=10mA
Fig1, 2
Spindle driver block 〈 Hall amplifier 〉
Fig1, 2
Input bias current
IHIB
−
1
5
µA
Fig1, 2
Minimum input level
VHIM
50
−
−
mVPP
Fig1, 2
Common mode input Range VHICM
1
−
4
V
Fig1, 2
Spindle driver block 〈 Torque control 〉
Fig1, 2
Input dead zone (one side)
Input output gain
Output ON resistor (upper)
Output ON resistor (lower)
Output limit current
PWM frequency
VDZSP
gmSP
RONUSP
RONLSL
ILIMSL
fosc
20
2.4
(0.8)
−
−
0.74
(0.24)
−
50
3.0
(1.0)
0.6
0.35
0.95
(0.31)
100
90
3.6
(1.2)
1.0
0.7
1.16
(0.38)
−
mV
A/V
(V/V)
Ω
Ω
A
(V)
kHz
SPRNF=0.33Ω
Ip=500mA
Io=500mA
SPRNF=0.33Ω
Fig1, 2
Fig1, 2
Fig1, 2
Fig1, 2
Spindle driver block 〈 FG output 〉
High voltage
VFGH
−
Low voltage
VFGL
−
4.9
−
0.1
−
V 100kΩ pull up to DVCC
V
Fig1, 2
Fig1, 2
Sled driver block
Input dead zone (one side)
Input output gain
Output ON resistor (upper)
Output ON resistor (lower)
Output limit current
PWM frequency
VDZSL
gmSL
RONUSL
RONLSL
ILIMSL
fosc
0
0.8
(0.4)
−
−
0.48
(0.24)
−
10
1.0
(0.5)
1.5
0.9
0.62
(0.31)
100
40
1.2
(0.6)
2.0
1.4
0.76
(0.38)
−
mV
A/V
(V/V)
Ω
Ω
A
(V)
kHz
SLRNF=0.5Ω
Io=500mA
Io=500mA
SLRNF=0.5Ω
Fig1, 2
Fig1, 2
Fig1, 2
Fig1, 2
Fig1, 2
Fig1, 2
Actuator driver block
Output offset voltage
VOFFT −50
0
Output saturation voltage "H" VOHFT
−
0.45
Output saturation voltage "L" VOLFT
−
0.45
Voltage gain
GVFT
16.0
17.5
This product is not designed for protection against redioactive rays.
50
0.8
0.8
19.0
mV
V Io=500mA
V Io=500mA
dB
Fig1, 2
Fig1, 2
Fig1, 2
Fig1, 2
6/18
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