BD7904FS ROHM Co. Ltd., BD7904FS Datasheet - Page 11

• Manufacturer Part Number: BD7904FS
• Description: 5ch Power Driver For Cd-rom, Dvd-rom
• Manufacturer: ROHM Co. Ltd.

   
∗5 Condition of input
〈 Hall bias 〉
〈 Hall amplifier 〉
Designation
Spindle driver block
〈 Torque command 〉
〈 FG 〉
RONUSP
RONLSP
VDZSP
ILIMSP
VFGH
gmSP
VFGL
VHB
IHIB
fosc
HU+
2.4V
2.6V
2.6V
2.6V
2.4V
2.4V
Ω
INPUT
1.65V
1.65V
1.65V
1.65V
3.3V
3.3V
3.3V
1.85
VIN
∗3
∗4
2.6V
2.4V
2.6V
2.4V
2.6V
2.4V
HV+
H
H
H
H
H
H
H
H
1
L
L
CTL
H
H
H
H
H
H
H
H
H
H
2
Ω
HW+
2.6V
2.6V
2.4V
2.4V
2.4V
2.6V
RL SP SL
1
1
2
2
1
1
2
2
1
1
−
1
1
1
1
2
2
1
1
1
1
SWITCH
1
1
1
1
1
1
1
1
1
1
Source
Source
Sink
Hi-Z
Sink
Hi-Z
U
+
IL
1
1
1
1
2
2
1
1
1
1
OP
1
1
1
1
1
1
1
1
1
1
IHB=10mA
Current flowing in each terminal at H−=2.5V,
HW+=2.7V (2.3V), HV=2.5V
∗2 Check VRNF with no output at VIN=VC±20mV
See 10 of 18 previous page
ILSP=500mA
ILSP=−500mA
HU+=2.6V, HV+=2.4V, HW+=2.4V
HU+=2.6V, HV+=2.6V, HW+=2.4V
Source
Source
Hi-Z
Sink
Hi-Z
Sink
+
Check VRNF with output at VIN=VC±90mV
V
+
Ω
Source
Source
Sink
Hi-Z
Hi-Z
Sink
Conditions
W
RON =
RON =
IOSPW=−500mA
IOSPU=−500mA
IOSPV=−500mA
IOSPW=500mA
12V − VOSP
IOSPU=500mA
IOSPV=500mA
Ω+ µ
VOSP
0.5A
Condition
0.5A
Measure point
VOSPW
VOSPW
VOSPU
VOSPU
VOSPV
VOSPV
Ω+ µ
OUTU, V, W
OUTU, V, W
VSPRNF
VSPRNF
VSPRNF
Measure
VOSPU
IU+ (−),
IV+ (−),
IW+ (−)
Pin 22
point
VFG
VFG