BH6541KV Datasheet, PDF (1/3 Pages) Rohm – Power driver for portable CD

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±0.3
7.0±0.2
36 25
37
24
48
1
13
12
0.5 0.2±0.1
0.15±0.1
0.1
VQFP48
Absolute Maximum Ratings (Ta=25˚C)
Parameter
Symbol
Limits
Unit
Control circuit supply voltage
Vcc
7
V
Power block supply voltage
PVCC
7
V
Pre-driver supply voltage
VG (19pin)
9
V
Power dissipation
Pd
1.12 ^*
W
Operating temperature range Topr
–30 ~ +85
˚C
Storage temperature range
Tstg
–55 ~ +150
˚C
*Derating : 9.0mW/˚C for operation above Ta=25˚C
On less than 3% (percentage occupied by copper foil),70mmx70mm, t=1.6mm, glass epoxy mounting.
Recommended Operating Conditions (Ta=25˚C)
Parameter
Symbol Min. Typ. Max. Unit
Control circuit supply voltage VCC
2.2
2.4
4.5
V
Power block supply voltage
PVCC 0.8
1.5
4.5
V
Pre-driver supply voltage
VG (19pin) —
7.2
8.5
V
February, 2001