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A
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1
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a
o
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0
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V50017-L1009-A220   seller 


Ripple current, less than 300 m I equivalent series resis-
tance (ESR), and temperature are the major considerations
when selecting input capacitors. Unlike polymer tantalum,
regular tantalum capacitors have a recommended mini-
mum voltage rating of 2 x (maximum DC voltage + AC
ripple). This is standard practice to ensure reliability.
V50017-L1009-A220   datasheet 



Functional Diagram













A0 23

A1 22

A2 21

20
A3






E1 18

E2 19
2
Y1
3
Y2
4
Y3
5
Y4
6
Y5
7
Y6
8
Y7
9
Y8
10
Y9
11
Y10
13
Y11
14
Y12
15
Y13
16
Y14
Y~5 GND=12

vcc = 24

TRUTH TABLE

INPUTS
OUTPUTS

E1
E2
A3
A2
A1
AO
YO
Y1
Y2
Y3
Y4
Y5
Y6
Y7
Y8
Y9
Y10
Y11
Y12
Y13
Y14
Y15

L
L
L
L
L
L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

L
L
L
L
L
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H

L
L
L
L
H
L
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H

L
L
L
L
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H

L
L
L
H
L
L
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H

L
L
L
H
L
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H
H

L
L
L
H
H
L
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H
H

L
L
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H
H

L
L
H
L
L
L
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H
H

L
L
H
L
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H
H

L
L
H
L
H
L
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H
H

L
L
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H
H

L
L
H
H
L
L
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H
H

L
L
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H
H

L
L
H
H
H
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L
H

L
L
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
L

L
H
x
x
x
x
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
L
x
x
x
x
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H
H
x
x
x
x
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H
H

H = High Voltage Level, L = Low Voltage Level, X = Don't Care


V50017-L1009-A220   price 




Cit:

: Ta=250C
__ lc=OA
7 f=lMHz


C
O






1


V50017-L1009-A220   pdf 

Above 150 kHz the performance of aluminum electrolytic capacitors becomes less effective. To further improve
the reflected input ripple current, or the output transient response, multilayer ceramic capacitors must be added.
Ceramic capacitors have low ESR and their resonant frequency is higher than the bandwidth of the regulator.
When placed at the output, their combined ESR is not critical as long as the total value of ceramic capacitance
does not exceed 150 pF. Also, to prevent the formation of local resonances, do not exceed the maximum
number of capacitors specified in the capacitor table.
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