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参数资料
| 型号： | MC34063ABN |
| 厂商： | 意法半导体 |
| 元件分类： | DC/DC变换器 |
| 英文描述： | DC-DC CONVERTER CONTROL CIRCUITS |
| 中文描述： | DC - DC变换器控制电路 |
| 文件页数： | 9/15页 |
| 文件大小： | 130K |
| 代理商： | MC34063ABN |
Calculation
Parameter
Step-Up
(Discontinuos mode)
Step-Down
(Continuos mode)
Voltage Inverting
(Discontinuos mode)
|
V
out
|
+
V
F
V
in
V
sat
t
on
/t
off
V
out
+
V
F
V
in
(
min
)
V
in
(
min
)
V
sat
1/f
min
4.5x10
-5
t
on
2I
out(max)
[(t
on
/t
off
)+1]
0.3/I
PK(switch)
I
out
t
on
V
ripple
(
p
p
)
V
in
(
min
)
V
sat
I
PK
(
switch
)
V
out
+
V
F
V
in
(
min
)
V
sat
V
out
1/f
min
4.5x10
-5
t
on
2I
out(max)
0.3/I
PK(switch)
I
PK
(
switch
)
(
t
on
+
t
off
)
8V
ripple
(
p
p
)
V
in
(
min
)
V
sat
V
out
I
PK
(
switch
)
(t
on
+ t
off
)max
C
T
I
PK(switch)
R
SC
C
O
1/f
min
4.5x10
-5
t
on
2I
out(max)
[(t
on
/t
off
)+1]
0.3/I
PK(switch)
I
out
t
on
V
ripple
(
p
p
)
V
in
(
min
)
V
sat
I
PK
(
switch
)
L(min)
t
on
(
max
)
t
on
(
max
)
t
on
(
max
)
NOTES:
V
sat
= Saturationvoltage of the output switch
V
F
= Foward voltagedrop of the output rectifier
THE FOLLOWING POWER SUPPLY CHARACTERISTICS MUST BE CHOSEN:
V
in
= Nominal input voltage
V
out
= Desired output voltage, |V
out
| = 1.25(1+R
2
/R
1
)
I
out
= Desired output current
f
min
= Minimum desired output switching frequency at the selected values ofVin and Io
V
ripple
= Desired peak to peak output ripple voltage. In practice, the calculaed capacitor value will and to be increased due to its equivalent
series resistance and board layout. The ripple voltage should be kept to a low valuesince it will directly affect the line and load regulation.
Step-upWith ExternalNPN Switch
MC34063A
9/15
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PDF描述 |
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| MC34063AC | DC-DC CONVERTER CONTROL CIRCUITS |
| MC34063ACD | DC-DC CONVERTER CONTROL CIRCUITS |
| MC34063ACD-TR | DC-DC CONVERTER CONTROL CIRCUITS |
| MC34063ACN | DC-DC CONVERTER CONTROL CIRCUITS |
| MC34063 | DC-DC CONVERTER CONTROL CIRCUITS |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MC34063AC | 制造商:STMICROELECTRONICS 制造商全称:STMicroelectronics 功能描述:DC/DC converter control circuits |
| MC34063ACD | 功能描述:直流/直流开关转换器 3.0 to 40V DC-DC Cnv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MC34063ACD-TR | 功能描述:直流/直流开关转换器 3.0 to 40V DC-DC Cnv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MC34063ACN | 功能描述:直流/直流开关转换器 3.0 to 40V DC-DC Cnv RoHS:否 制造商:STMicroelectronics 最大输入电压:4.5 V 开关频率:1.5 MHz 输出电压:4.6 V 输出电流:250 mA 输出端数量:2 最大工作温度:+ 85 C 安装风格:SMD/SMT |
| MC34063ACS | 制造商:AIC 制造商全称:Analog Intergrations Corporation 功能描述:DC/DC CONVERTER CONTROL CIRCUIT |
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