S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 78

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

Positive Voltage Conversion
The S1F76540 can also boost up a voltage to the posi-
tive potential using external diodes. In such case, how-
ever, the regulator function is unavailable. Figure 2.14
S1F70000 Series
Technical Manual
Setup conditions of Figure 2.14
• Internal clock : ON (Low Output mode)
• Booster circuit : ON
• Regulator
Power-off procedure
• Set the P
Two-time boosting
• To boost up a voltage two times, remove capacitor C1 and diode D1 of Figure 2.14, and connect the anode of
diode D2 to the V
Figure 2.15 Potential relationship during positive voltage conversion (3-time boosting)
Figure 2.14 Wiring example of positive voltage conversion (3-time boosting)
OFF2
V
V
pin to low (V
DD
I
: OFF
DD
pin.
I
) to turn off all circuits.
C
I
+
V
DD
V
I
V
EPSON
I
1
2
3
4
5
6
7
8
3V
V
V
V
RV
V
FC
TC1
TC2
I
O
RI
REG
DD
gives a wiring example for three-time positive boosting,
and Figure 2.15 provides its electrical potential rela-
tionship.
D1
P
P
3 V
C2N
C3N
C1N
C2P
C1P
OFF1
OFF2
V
3V
F
I
16
15
14
13
12
11
10
I
9
– (3 V
C1 +
V
O'
F
D2
C2
)
+
D3
S1F76540 Series
+
C
O
V
O
'
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