參數(shù)資料
型號: 78S40
廠商: ON SEMICONDUCTOR
元件分類: 基準電壓源/電流源
英文描述: RADIATION HARDENED HIGH EFFICIENCY, 5 AMP SWITCHING REGULATORS
中文描述: 抗輻射高效,5安培開關(guān)穩(wěn)壓器
文件頁數(shù): 5/8頁
文件大?。?/td> 124K
代理商: 78S40
μ
A78S40
5
MOTOROLA ANALOG IC DEVICE DATA
CT
Ipk
Oscilator
+Comp.
+
Op
Amp
1.25V
Reference
S
R
Q
170
1
2
3
4
5
6
7
8
9
10
11
12
13
VCC
14
15
16
D1
Vout
5.0V/500mA
*
L
470
+
CO
R2
3.6k
R1
1N5822
+
100
CT
* Use external rectifier to increase circuit efficiency
1.2k
Vin
25V
470
pF
RSC
0.33
220
μ
H
Figure 5. Step–Down Converter
CT
Ipk
Oscilator
+Comp.
+
Op
Amp
1.25V
Reference
S
R
Q
170
1
2
3
4
5
6
7
8
9
10
11
12
13
VCC
14
15
16
D1
Vout
28V/175mA
*
150
+
CO
R2
47k
R1
1N5822
+
100
CT
* Use external rectifier to increase circuit efficiency
22k
Vin
12V
1500
pF
RSC
0.22
Figure 6. Step–Up Converter
170
μ
H
L
180
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