00W149A
Power driver for portable CD
BH6541KV
Description
BH6541KV is a 3chPWM driver + 1ch sensorless
spindle driver developed for driving motor and
actuator of portable CD,MD. Lower power
consumption can be achieved in the set by
applying the power MOSFET. In addition,
the size reduction in the set can be accomplished
by using the VQFP48 package.
Features
<PWM driver: 3ch>
1) Digital input, Direct PWM driving system
<Spindle driver>
1) 3-phase full-wave sensorless driving system
2) Built-in start and brake function
3) Built-in half-bridge driver for power supply
Applications
Portable CD, MD
Dimension (Units : mm)
9.0鹵0.3
7.0鹵0.2
36
9.0鹵0.3
7.0鹵0.2
37
48
1
1.425鹵0.1
0.1鹵0.1
25
24
13
12
0.4
0.15鹵0.1
0.1
0.5
0.2鹵0.1
VQFP48
Absolute Maximum Ratings (Ta=25藲C)
Parameter
Control circuit supply voltage
Power block supply voltage
Pre-driver supply voltage
Power dissipation
Operating temperature range
Storage temperature range
*Derating : 9.0mW/藲C for operation above Ta=25藲C
On less than 3% (percentage occupied by copper foil),70mmx70mm, t=1.6mm, glass epoxy mounting.
Symbol
Vcc
PVCC
VG (19pin)
Pd
Topr
Tstg
Limits
7
7
9
1.12
*
鈥?0 ~ +85
鈥?5 ~ +150
Unit
V
V
V
W
藲C
藲C
Recommended Operating Conditions (Ta=25藲C)
Parameter
Control circuit supply voltage
Power block supply voltage
Pre-driver supply voltage
Symbol
VCC
PVCC
VG (19pin)
Min.
2.2
0.8
鈥?/div>
Typ.
2.4
1.5
7.2
Max.
4.5
4.5
8.5
Unit
V
V
V
February, 2001
1
2
3
