BH6570KV Datasheet, PDF (1/2 Pages) Rohm – Power controller+4-channel PWM driver for portable CD

01W020A
Power controller+4-channel PWM driver
for portable CD
BH6570KV
Description
Dimension (Units : mm)
BH6570KV incorporates 4-channel DC/DC converter,
1-channel series regulator and 4-channel PWM drivers
on a single chip for a portable CD. Four lines for external
power supply are able to drive efficiently and to reduce
power consumption in the set. In addition, due to the small
VQFP48C package, the size of the set can be reduced.
Features
9.0 0.3
7.0 0.2
36 25
37
24
48
13
1) Low power consumption
2) Low ON resistance
3) VQFP48C package
<Power control>
- Step-up DC/DC converter for micro controller
- Main step-up/step-down DC/DC converter
- Sub step-up DC/DC converter
- VG step-up circuit for power MOS driving
- Built-in ripple filter
- Built-in series regulator circuit
<Driver>
- Built-in 4-channel H bridge driver using power MOS
- Digital input available
- Direct PWM driving
1
12
0.125 0.1
0.5
0.2 0.1
0.1
Applications
Portable CD
Absolute Maximum Ratings Ta=25°C
Parameter
Symbol
Limits
Unit
PVcc1
V
SVCC
V
PVcc2
Pd
V
*
mW
Topr
– ~+
°C
Tstg
– ~+
°C
*Derating : 9.5mW/°C for operation above Ta=25°C *PCB (70mmx70mm, t=1.6mm) glass epoxy mounting.
Recommended Operating Conditions (Ta=25°C)
Parameter
Symbol Min. Typ. Max. Unit
PVcc1
V
SVcc
V
AC
PVcc2
V
Ta
–
°C
May, 2001