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8. APPLIED CIRCUIT EXAMPLES
(1) Quadruple boosting, Triple Boosting and Double Boosting
Fig.8.1 shows a connection example for obtaining quadruple boosting output for input voltage by operating
the booster only.
For triple boosting, remove the capacitor C1 and jumper between the CAP1+ (pin No.11) and V
pins; triple boosting (15V) is obtained from V
For double boosting, further remove the capacitor C2 and jumper between the CAP2+ (pin No.13) and
V
(No.9) pins; double boosting (10V) is obtained from V
DD
V
SS
R
OSC
1MΩ
V
DD
Fig.8.1 Quadruple Booster
(2) Quadruple boosting + Stabilizer
Fig.8.3 shows an applied-circuit example for stabilizing the boosting output obtained in Fig.8.1 the
stabilizer and providing the temperature gradient for the V
selection circuit.
This application example can indicate two outputs from V
Triple boosting + stabilizer operation using the triple boosting and double boosting + stabilizer operation is
also available.
#Note 1
R1+R2
V
(=
)･V
REG
RV
R1
R2
C5
＋
10μF
R
- －
RV
1MΩ
R1
V
SS
V
DD
Fig.8.3 Quadruple Boosting + Stabilizer
(Temperature Gradient of C
Note 1: The RV pin (No.1) has high input impedance. If the wire is long, use a shield wire or the like to prevent
noise. To reduce the influence of noise, it is effective to reduce the R
current consumption will increase.)
S1F76640 Technical Manual (Rev.1.5)
1
16
VRI
RV
V
15
2
V
REG
O
3
CAP3+
14
TC1
CAP2+
13
4
TC2
5
CAP2−
12
XP
OFF
CAP1+
11
6
V
SS
CAP1−
10
OSC1
7
V
8
OSC2
9
DD
1
RV
VRI
2
V
V
REG
OUT
3
TC1
CAP3+
4
TC2
CAP2+
5
XP
CAP2−
OFF
V
CAP1+
6
SS
R
OSC
OSC1
CAP1−
7
1MΩ
8
OSC2
V
DD
T1
8. APPLIED CIRCUIT EXAMPLES
.
OUT
.
OUT
×4)
V
(=V
OUT
DD
+
C4
10μF
−
+
C2
10μF
−
+
C3
10μF
−
+
C1
10μF
−
Fig.8.2 Diagram of Voltage Relations
REG
and V
O
16
V
(=V
OUT
DD
15
14
C4
+
10μF
13
－
−
C2
+
10μF
− －
12
C3
+
10μF
－
−
11
C1
+
10μF
－
−
10
9
Fig.8.4 Diagram of Voltage Relations
)
EPSON
( + 20V)
V
OUT
( + 5V)
V
DD
V
(0V)
SS
for Quadruple Boosting
output through the temperature gradient
at the same time.
REG
×4)
V
(+20V)
OUT
V
(+5V)
DD
V
(0V)
SS
for Quadruple Boosting +
Stabilizer
value. (However, the R
RV
(No.9)
DD
4 $ V
DD
V
REG
4 $ V
DD
RV
17
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