One chip driver for slim CD-ROM/RW, DVD-ROM
BH6546KV
Description Dimension (Units : mm)
Features
Applications
Absolute Maximum Ratings
(Ta=25˚C)
VQFP48C
+0.05
-0.03
+0.05
-0.04
0
.
5

–

0
.
1
5
1
.
0

–

0
.
2
0.145
0.22
9
.
0

–

0
.
2
7
.
0

–

0
.
1
9.0 – 0.2
7.0 – 0.1
48
37
1 12
13
24
2536
0.5 – 0.1
1
.
6
M
a
x
.
0
.
1

–

0
.
0
5
0.75
0
.
7
5
1
.
4

–

0
.
0
5
4˚
+6˚
-4˚
0.08 S
0.08 M
Power MOS supply voltage
Control circuit supply voltage
Maximum output current
Power dissipation
Operating temperature range
Storage temperature range
Parameter Symbol Limits Unit
PVcc
Vcc
IoMAX
Pd
Topr
Tstg
6
6
3
1.18
–30 ~ +85
–55 ~ +150
V
V
A
W
˚C
˚C
*1
*2
CD-ROM, CD-RW, DVD-ROM
BH6546KV is a 4-channel PWM driver that drives
spindle/slide motor, and focus/track actuator coil
of optical disc. In high speed and 180˚ PWM
driving slim disc, the spindle driver can achieve
low vibration/low noise.
1) Low vibration/low noise by 180˚ PWM driving
2) Charge-pump circuit is not necessary for output
due to complement power MOSFET.
3) Low power consumption due to low ON resistance
Spindle driver output: 0.5W (Typ.)
Slide/Focus/Tracking driver output: 1.2W (Typ.)
4) 1 phase/3 phase FG output can be switched
by FG switching pin.
5) VQFP48C contributes to make the set smaller and thinner.
*1 Intermittent current at maximum applied time of 5msec, 1/10 duty (Max.)
*2 Derating : 9.5mW/˚C for operation above Ta=25˚C
On less than 3% (percentage occupied by copper foil), 70mmx70mm, t=1.6mm, glass epoxy mounting.
Power MOS supply voltage
Control circuit supply voltage
Ambient temperature
PVcc
Vcc
Ta
3.0 ~ 5.5
4.0 ~ 5.5
–10 ~ +70
V
V
˚C
Recommended Operating Conditions
Parameter UnitLimitsSymbol