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S1F76300 Series
Other Applications
Voltage booster
Combining an S1F76310 switching regulator with an
S1F76610C/M DC/DC converter and voltage regulator
L
V
V
GND
Potential levels are shown in the following figure.
S1F76310M1A0
V
(5 V)
O
V
(1.5 V)
I
GND (0 V)
Although the circuit appears to have two ON/OFF con-
trol points, PS on the S1F76310M1A0 and P
S 1 F 7 6 6 1 0 C / M , P S o n l y s h u t s d o w n t h e
4–20
D
V
SW
V
O
I1
I2
S1F76310M
PS
PWCR
S1F76610C/M
V
(5 V)
DD
V
(0 V)
DD
V
(–10 V)
O
OFF
creates the voltage booster circuit shown in the follow-
ing figure.
1
+
C1
10 F
2
3
+
C2
10 F
4
S1F76610C/M
5
C1
6
7
V
= –5 V
I
S1F76310M1A0. The input voltage still reaches the
S1F76610C/M through L and D.
V
= 1.5 V
I
PS
GND = 0 V
V
P
OFF
GND = 0 V
on the
EPSON
14
13
R
OSC
1 M
12
11
10
9
8
C3
10 F
Boost
Boost
ON
OFF
= 5 V
I
Boost
Boost
ON
OFF
P
OFF
V
= – 15V
O
S1F70000 Series
Technical Manual
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