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UA78S40PV View Datasheet(PDF) - Motorola => Freescale

Part Name
Description
View to exact match
UA78S40PV
Motorola
Motorola => Freescale Motorola
UA78S40PV Datasheet PDF : 8 Pages
1 2 3 4 5 6 7 8
Vin
25V
+
100
µA78S40
Figure 5. Step–Down Converter
RSC
0.33
CT
470
pF
9
10
11
12
13
14
15
16
VCC
CT
Ipk
Oscilator
SQ
1.25V
Reference
Comp.
+
Op
Amp
+
R
170
D1
8
R2
3.6k
R1 1.2k
7
6
5
4
3
2
1
*
* Use external rectifier to increase circuit efficiency
1N5822
L
220µH
470
Vout
5.0V/500mA
+
CO
Vin
12V
+
100
Figure 6. Step–Up Converter
L
RSC
0.22
CT
1500
pF
170µH
180
9
10
11
12
13
14
15
16
VCC
CT
Ipk
Oscilator
SQ
1.25V
Reference
Comp.
+
Op
+Amp
R
170
D1
8
R2
47k
R1 22k
7
6
5
4
3
2
1
1N5822
*
* Use external rectifier to increase circuit efficiency
Vout
28V/175mA
+
150 CO
MOTOROLA ANALOG IC DEVICE DATA
5
 

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