bh6570kv ROHM Co. Ltd., bh6570kv Datasheet
bh6570kv
Manufacturer Part Number
bh6570kv
Description
Power Controller+4-channel Pwm Driver For Portable Cd
Manufacturer
ROHM Co. Ltd.
Datasheet
1.BH6570KV.pdf
(2 pages)
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
Portable CD
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.
*
Bat t er y suppl y vol t age
Syst em suppl y vol t age
AC adapt er vol t age
Pow er di ssi pat i on
O per at i ng t em per at ur e r ange
St or age t em per at ur e r ange
B a t t e r y s u p p l y v o l t a g e
Syst em suppl y vol t age
AC adapt er suppl y vol t age
Am beni ent t em per at ur e
Derating : 9.5mW/°C for operation above Ta=25°C * PCB (70mmx70mm, t=1.6mm) glass epoxy mounting.
Description
Features
Applications
Absolute Maximum Ratings ( Ta=25°C)
Recommended Operating Conditions (Ta=25°C)
Parameter
Parameter
Power controller+4-channel PWM driver
Symbol
Symbol
PVcc1
PVcc2
SVCC
PVcc1
PVcc2
Topr
Tstg
SVcc
Pd
Ta
BH6570KV
for portable CD
–10
Min.
1. 5
2. 0
2. 0
–30
–55
Limits
1180
~
~
7
7
7
Typ.
2. 4
2. 5
4. 5
25
+85
+150
*
Max.
4. 5
4. 5
6. 5
70
Dimension (Units : mm)
mW
Unit
Unit
°C
°C
°C
V
V
V
V
V
V
37
48
0.5
VQ FP48C
9.0•} 0.3
7.0•} 0.2
36
1
25
12
0.2•} 0.1
0.1
24
13
0.125•} 0.1
May, 2001
01W020A
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bh6570kv Summary of contents
Page 1
... Power controller+4-channel PWM driver Description 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 ...
Page 2
Electrical characteristics (Unless otherwise noted; Parameter Symbol <Whole circuit> I PVCC1 current consumption PVCC1 <H bridge driver> Output ON resistance R ON <Power> SVCC pin threshold voltage 1 SVCC SVCC pin threshold voltage 2 SVCC <Power supply for micro controller> ...