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參數(shù)資料
| 型號： | BH6570KV |
| 廠商： | Rohm CO.,LTD. |
| 英文描述： | Power controller+4-channel PWM driver for portable CD |
| 中文描述： | 電源控制器4通道便攜式CD PWM驅(qū)動器 |
| 文件頁數(shù)： | 1/2頁 |
| 文件大?。?/td> | 118K |
| 代理商： | BH6570KV |
Power controller+4-channel PWM driver
for portable CD
BH6570KV
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.
Dimension (Units : mm)
Features
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
Applications
Portable CD
Absolute Maximum Ratings Ta=25°C
Parameter
01W020A
May, 2001
1
0
1
0
48
0.5
36
9
0
7
0
37
9.0
7.0
0.3
0.2
25
0.2
0.1
12
13
0.125
0.1
0
24
0.1
Limits
Unit
V
*
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
V
V
mW
°C
°C
+
+
–
–
~
~
Symbol
PVcc1
SVCC
PVcc2
Pd
Topr
Tstg
*
PVcc1
SVcc
PVcc2
Ta
V
V
V
°C
Min.
Max.
Unit
Typ.
AC
–
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