HT75XX
Circuit for increasing output voltage
V
I
N
V
I
N
V
O
T
V
O
U
T
H
T
7
5
X
X U
S
e
r
i
e
s
C
1
C
2
V
X
X
R
R
1
2
1
m
0
F
1
m
0 F
G
N
D
I
S
S
C
o
m
m
o
n
S
i
n
g
l
e
p
o
i
n
t
G
C
N
o
D
m
m
o
n
R2
R1
VOUT = VXX ( 1 +
) + ISS R2
Circuit for increasing output voltage
V
I
N
V
I
N
V
O
U
T
V
O
U
T
H
T
7
5
X
X
S
e
r
i
e
s
C
1
C
2
V
X
X
R
1
1
m
0
F
1
m
0 F
G
N
D
I
D
S
S
1
C
o
m
m
o
n
S
i
n
g
l
e
p
o
i
n
t
G
C
N
o
D
m
m
o
n
VOUT = VXX + VD1
Constant current regulator
V
I
N
V
I
N
V
O
T
H
T
7
5
X
X U
S
e
r
i
e
s
C
1
C
2
G
N
D
V
m
0 F
X
X
R
A
1
m
0
F
1
I
S
S
I
O
U
T
R
L
C
o
m
m
o
n
VXX
RA
IOUT
=
+ ISS
8
May 2, 2000
HOLTEK [ HOLTEK SEMICONDUCTOR INC ]
