S1F78100Y2A Epson Electronics America, Inc., S1F78100Y2A Datasheet - Page 236

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

SAMPLE CIRCUITS (S1F77200Y Series)
CR timer circuit
When the S1F77200Y circuit is configured as shown in Figure 5-16, it can be used as a CR timer circuit.
Battery backup circuit
The following is an example of the supply voltage switching circuit for the battery backup configured featuring the
S1F77200Y series.
S1F70000 Series
Technical Manual
V
DD
S1F77200Y
V
DD
R
C
Figure 5-17 Battery backup circuit
V
V
SS
DD
Figure 5-16 CR timer circuit
V
O
V
DD
EPSON
S1F77200Y
PNP transistor
V
SS
V
V
O
DD
NPN transistor
OUT
V
BAT
V
Enable signal
CC
S1F77200Y Series
6–21