Power controller+4-channel PWM driver
for portable CD
BH6570KV
Description Dimension (Units : mm)
Features
Applications
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.
01W020A
1) Low power consumption
2) Low ON resistance
3) VQFP48C package

- 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

- Built-in 4-channel H bridge driver using power MOS
- Digital input available
- Direct PWM driving
Portable CD
May, 2001
VQFP48C
1
0.11.4
±
0.1
48
0.5
36
9.0
±
0.3
7.0
±
0.2
37
9.0±0.3
7.0±0.2
0.2±0.1
12
13
0.125±0.1
0.5
25
24
0.1
Absolute Maximum Ratings (Ta=25°C)
Battery supply voltage
System supply voltage
AC adapter voltage
Power dissipation
Parameter Limits Unit
*Derating : 9.5mW/°C for operation above Ta=25°C *PCB (70mmx70mm, t=1.6mm) glass epoxy mounting.
7
7
7
1180
V
V
mW
Operating temperature range+85–30~
°C
Storage temperature range
Symbol
PVcc1
SVCC
PVcc2
Pd
Topr
Tstg +150–55~ °C
V
*
Battery supply voltagePVcc12.41.54.5V
System supply voltageSVcc2.52.04.5V
Recommended Operating Conditions (Ta=25°C)
Parameter Min. Max. UnitTyp.Symbol
AC adapter supply voltagePVcc24.52.06.5V
Ambenient temperatureTa25–1070°C