HT1117 Series
·
Digitally selected outputs
V
IN
V IN
H T 1 1 1 7 -A D J
A D J
V O U T
R 1
1 2 5
W
C 2
1 0
m
F
V
O U T
C 1
1 0
m
F
R 2
R 3
R 4
R 5
R n
C o m m o n
In p u ts
N o te : R 2 c a n s e t th e m a x im u m
v o lta g e .
S in g le p o in t
G N D
C o m m o n
·
High output current positive voltage regulator
T r1
V
IN
I
C
1
V IN
R 1
C 1
1 0
m
F
H T 1 1 1 7
S e r ie s
G N D
V O U T
I
R
E G
V
I
O
C 2
1 0
m
F
O U T
C o m m o n
S in g le p o in t G N D
V
=
1
B E 1
C o m m o n
R
I
R
I
O
= I
C
E G
-
+ I
R
I
C
1
E G
,
(1 +
b
)
1
·
Increased Output voltage Circuit
V
IN
V IN
C 1
1 0
m
F
H T 1 1 1 7
S e r ie s
I
S
S
V O U T
C 2
1 0
m
F
V
O U T
G N D
V
X X
R 1
D 1
C o m m o n
S in g le p o in t G N D
C o m m o n
V
OUT
= V
XX
+ V
D1
R
1
=
V
XX
I
SS
Rev. 1.00
5
August 7, 2007
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
