S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 165

• Manufacturer Part Number: S1F78100Y2A
• Description: High Precision Voltage Regulators
• Manufacturer: Epson Electronics America, Inc.

S1F76300 Series
Other Applications
Voltage booster
Combining an S1F76310 switching regulator with an
S1F76610C/M DC/DC converter and voltage regulator
Potential levels are shown in the following figure.
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
GND (0 V)
V
V
I
O
(1.5 V)
(5 V)
S1F76310M1A0
GND
L
V
V
I1
I2
S1F76310M
PS
V
S1F76610C/M
SW
PWCR
V
V
V
DD
DD
O
D
V
(–10 V)
O
(5 V)
(0 V)
OFF
on the
C1
V
I
EPSON
= –5 V
creates the voltage booster circuit shown in the follow-
ing figure.
S1F76310M1A0. The input voltage still reaches the
S1F76610C/M through L and D.
10 F
10 F
C1
C2
PS
P
+
+
OFF
GND = 0 V
GND = 0 V
1
2
3
4
5
6
7
V
I
V
= 1.5 V
S1F76610C/M
I
= 5 V
10 F
C3
Boost
Boost
ON
ON
14
13
12
11
10
9
8
R
1 M
Boost
Boost
OSC
OFF
OFF
V
Technical Manual
S1F70000 Series
O
= – 15V
P
OFF