BD7902CFS ROHM Co. Ltd., BD7902CFS Datasheet - Page 12

• Manufacturer Part Number: BD7902CFS
• Description: 6ch Power Driver For Cd-rom, Dvd-rom
• Manufacturer: ROHM Co. Ltd.

   
   
Designation
Actuator driver block
Loading driver block
CTL1, CTL2
CTL1, CTL2
VOHFT
VOHLD
VOFFT
VOLFT
VOFLD
VOLLD
VMV
VMVC
GVFT
GVLD
VIH
VIL
(Pin22)
(Pin22)
CTL1
CTL1
H
H
CC
L
−
L
Ω
±0.25V
±0.25V
INPUT
(3.3V)
(3.3V)
1.65V
1.65V
1.65V
1.65V
1.65V
1.65V
3.3V
3.3V
(0V)
(0V)
VIN
0V
0V
(Pin23)
(Pin23)
CTL2
CTL2
H
H
H
L
L
H
H
H
H
H
H
H
H
H
H
H
1
L
CTL
Spindle
H
H
H
H
H
H
H
2
L
L
L
L
L
Ω
Forward-rotation mode
Forward-rotation mode
RL SP SL
2
1
1
2
2
1
1
2
2
2
1
1
−
SWITCH
SPIN > VC
1
1
1
1
1
1
1
1
1
1
1
1
Sled
1
1
1
1
1
1
1
1
1
1
1
1
+
IL
1
2
2
1
1
2
2
1
1
1
1
1
IL=500mA
IL=−500mA
20log |(VO − VOFFT) / ±0.25)|
IL=500mA
IL=−500mA
20log |(VO − VOFFT) / ±0.25)|
Check active at "H"=2.0
Check stand-by at "L"=0.5
Check all output at VC=0.7V
Check all output at V
Focus
+
Reverse-rotation braking mode
Short-circuit braking mode
Tracking
+
Ω
SPIN < VC
Conditions
CC
=3.8V
Loading
Ω+ µ
1)
2)
... ON
3)
4)
... OFF
Ω+ µ
12−OUT+ (−)
5−OUT+ (−)
OUT+ (−)
OUT+ (−)
OUTPUT
OUTPUT
Measure
IQVC
IQVC
point
VO
VO
VO
VO