BH6546KV Datasheet, PDF (1/3 Pages) Rohm – One chip driver for slim CD-ROM/RW, DVD-ROM

One chip driver for slim CD-ROM/RW, DVD-ROM
BH6546KV
Description
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.
Features
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: 0.5Ω (Typ.)
Slide/Focus/Tracking driver output: 1.2Ω (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.
Dimension (Units : mm)
9.0 ± 0.2
7.0 ± 0.1
36
37
25
24
48
13
1
12
0.75
0.145
+0.05
-0.03
0.5 ± 0.1
0.22
+0.05
-0.04
4˚ ^+-64˚˚
0.08 S
0.08 M
VQFP48C
Applications
CD-ROM, CD-RW, DVD-ROM
Absolute Maximum Ratings ^(Ta=25˚C)
Parameter
Symbol
Limits
Power MOS supply voltage
PVcc
6
Control circuit supply voltage
Maximum output current
Power dissipation
Operating temperature range
Storage temperature range
Vcc
IoMAX
Pd
Topr
Tstg
6
3 ^∗1
1.18 ^∗2
–30 ~ +85
–55 ~ +150
∗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.
Unit
V
V
A
W
˚C
˚C
Recommended Operating Conditions
Parameter
Symbol
Limits
Unit
Power MOS supply voltage
PVcc
3.0 ~ 5.5
V
Control circuit supply voltage
Vcc
4.0 ~ 5.5
V
Ambient temperature
Ta
–10 ~ +70
˚C