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S1F77200Y Series
5–20EPSONS1F70000 Series
Technical Manual
SAMPLE CIRCUITS (S1F77210Y Series)
CR timer circuit
When the S1F77210Y circuit configured as shown in Figure 5-14, it can be used as a CR timer circuit.
Figure 5-14 CR timer circuit
Battery backup circuit
The following is an example of the supply voltage switching circuit for the battery backup supply configured featur-
ing the S1F77210Y series.
Figure 5-15 Battery backup circuit
V
DD
V
DD
V
O
V
SS
OUT
R
C
S1F77210Y
VDD VCC
VBAT
VDD
VO
VSS
PNP transistor
NPN transistor
Enable signal
S1F77210Y