S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 177

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

S1F76300 Series
Other Applications
Voltage booster
Combining an S1F76330M1B0 switching regulator
with an S1F76610C/M DC/DC converter and voltage
Potential levels are shown in the following figure.
4–32
GND (0 V)
V
V
I
O
(1.5 V)
(5 V)
S1F76330M1B0
GND
L
V
I1
S1F76330M
PS
C
G
V
SW
S1F76610C/M
R
C
D
D
V
V
V
D
DD
DD
O
V
O
(–10 V)
(5 V)
(0 V)
C
V
I
= –5 V
EPSON
10 F
10 F
regulator creates the voltage booster circuit shown in
the following figure.
Although the circuit appears to have two ON/OFF con-
trol points, PS on the S1F76330M1B0 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
S1F76330M1B0. The input voltage still reaches the
S1F76610C/M through L and D.
C1
C2
+
+
PS
P
OFF
1
2
3
4
5
6
7
GND = 0 V
GND = 0 V
V
I
S1F76610C/M
= 1.5 V
V
I
= 5V
10 F
C3
Boost
Boost
ON
ON
14
13
12
11
10
9
8
R
1 M
OSC
Boost
Boost
OFF
OFF
V
O
Technical Manual
S1F70000 Series
= –15 V
OFF
P
OFF
on the