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參數(shù)資料
| 型號： | MC34063ACN |
| 廠商： | 意法半導體 |
| 元件分類： | DC/DC變換器 |
| 英文描述： | DC-DC CONVERTER CONTROL CIRCUITS |
| 中文描述： | DC - DC變換器控制電路 |
| 文件頁數(shù)： | 9/15頁 |
| 文件大?。?/td> | 130K |
| 代理商： | MC34063ACN |
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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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MC34063ACS | 制造商:AIC 制造商全稱:Analog Intergrations Corporation 功能描述:DC/DC CONVERTER CONTROL CIRCUIT |
| MC34063AD | 功能描述:直流/直流開關調(diào)節(jié)器 1.5-A Boost/Buck Inverting Swtch Reg RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34063A-D08-T | 制造商:Unisonic Technologies Co Ltd 功能描述:ELECTRONIC COMPONENT |
| MC34063ADE4 | 功能描述:直流/直流開關調(diào)節(jié)器 1.5-A Boost/Buck Inverting Swtch Reg RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| MC34063ADG | 功能描述:直流/直流開關調(diào)節(jié)器 40V 1.5A Buck/Boost/Inverting RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
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