參數(shù)資料
型號: MC33063AVDR2
廠商: ON SEMICONDUCTOR
元件分類: 穩(wěn)壓器
英文描述: DC-to-DC Converter Control Circuits
中文描述: 1.5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8
封裝: SOIC-8
文件頁數(shù): 7/16頁
文件大?。?/td> 149K
代理商: MC33063AVDR2
MC34063A, MC33063A
http://onsemi.com
7
1.25 V
Ref
Reg
V
out
5.0 V/500 mA
1.0
μ
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
μ
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 9. Step–Down Converter
10a. External NPN Switch
10b. 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 10. External Current Boost Connections for I
C
Peak Greater than 1.5 A
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