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HT77S11 Datasheet(PDF) 11 Page - Holtek Semiconductor Inc

Part # HT77S11
Description  High Efficiency Synchronous Step-Up DC/DC Converter
Download  16 Pages
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Manufacturer  HOLTEK [Holtek Semiconductor Inc]
Direct Link  http://www.holtek.com
Logo HOLTEK - Holtek Semiconductor Inc

HT77S11 Datasheet(HTML) 11 Page - Holtek Semiconductor Inc

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Application Circuits
VOUT=3.3V
VOUT=5.0V
VOUT=1.8V~5.5V
HT77S10/HT77S11
Rev. 1.00
11
February 3, 2010
L : T D K S L F 7 0 4 5 T - 2 2 0 M R 9 0 - P F
C 1 , C 2 : V i s h a y 5 9 3 D 4 7 6 X 9 0 1 6 C 2
L X
L B I
R E F
G N D
F B
L B O
S H D N
O U T
0 . 1 m F
2 2 m H
C 2
4 7 m H
V O U T
O u t p u t 3 . 3 V
V I N
L
C 1
4 7 m F
R 4
R 3
R 5
Figure 1
L : T D K S L F 7 0 4 5 T - 2 2 0 M R 9 0 - P F
C 1 , C 2 : V i s h a y 5 9 3 D 4 7 6 X 9 0 1 6 C 2
L X
L B I
R E F
G N D
F B
L B O
S H D N
O U T
0 . 1 m F
2 2 m H
C 2
4 7 m H
V O U T
O u t p u t 5 . 0 V
V I N
L
C 1
4 7 m F
R 4
R 3
R 5
Figure 2
L : T D K S L F 7 0 4 5 T - 2 2 0 M R 9 0 - P F
C 1 , C 2 : V i s h a y 5 9 3 D 4 7 6 X 9 0 1 6 C 2
L X
L B I
R E F
G N D
F B
L B O
S H D N
O U T
0 . 1 m F
2 2 m H
C 2
4 7 m H
O u t p u t A d j .
( 1 . 8 V ~ 5 . 5 V )
V I N
L
C 1
4 7 m F
V O U T = V R E F x ( 1 +
)
R 1
R 2
R 4
R 3
R 5
R 1
R 2
Figure 3


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