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參數資料
| 型號： | MC33063AVPG |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDIP8 |
| 封裝： | LEAD FREE, PLASTIC, DIP-8 |
| 文件頁數： | 7/13頁 |
| 文件大小： | 168K |
| 代理商： | MC33063AVPG |
MC34063A, MC33063A, NCV33063A
http://onsemi.com
7
1.25 V
Ref
Reg
V
out
5.0 V/500 mA
1.0 H
V
out
+100
Optional Filter
8
7
R
sc
0.33
6
V
in
25 V
100
+
R1
1.2 k
R2
3.6 k
S
Q
R
Q2
Q1
I
pk
OSC
C
T
V
CC
+
Comp.
1
2
3
C
T
4
470
pF
470
C
O
+
5
L
1N5819
220 H
Test
Conditions
Results
Line Regulation
V
in
= 15 V to 25 V, I
O
= 500 mA
12 mV =
±
0.12%
Load Regulation
V
in
= 25 V, I
O
= 50 mA to 500 mA
3.0 mV =
±
0.03%
Output Ripple
V
in
= 25 V, I
O
= 500 mA
120 mVpp
Short Circuit Current
V
in
= 25 V, R
L
= 0.1
1.1 A
Efficiency
V
in
= 25 V, I
O
= 500 mA
83.7%
Output Ripple With Optional Filter
V
in
= 25 V, I
O
= 500 mA
40 mVpp
Figure 10. StepDown Converter
11a. External NPN Switch
11b. External PNP Saturated Switch
8
7
6
R
sc
V
in
1
2
V
out
8
7
6
R
sc
V
in
1
2
V
Figure 11. External Current Boost Connections for I
C
Peak Greater than 1.5 A
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