S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 74

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

4-time Booster
Only the booster circuit operates, and it boosts the input
voltage (V
it at the V
S1F70000 Series
Technical Manual
Setup conditions of Figure 2.9
• Internal clock : ON (Low Output mode)
• Booster circuit : ON
• Regulator
Power-off procedure
• Set the P
Ripple voltage
• As the output at V
(V
RP
) increases according to the load current, and it can roughly be calculated by equation (4).
O
I
) four times in negative direction and outputs
pin. As the regulator is not used, the voltage
OFF2
pin to low (V
: OFF
O
V
V
DD
pin is unstable, it can contain ripple components as shown in Figure 2.10. The ripple voltage
V
O
I
Figure 2.9 Wiring example of 4-time booster
I
) to turn off all circuits.
C
I
+
C
+
O
EPSON
appearing at the V
Figure 2.9 gives a wiring example.
1
2
3
4
5
6
7
8
V
V
V
RV
V
FC
TC1
TC2
O
RI
REG
DD
P
P
C2N
C3N
C1N
C2P
C1P
OFF1
OFF2
V
O
I
pin may contain ripple components.
16
15
14
13
12
11
10
9
C1
+
C2
+
+
S1F76540 Series
C3
2–31