S1F77200Y Series

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.

VDD

R

VDD S1F77210Y VO OUT

C

VSS

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 featuring the S1F77210Y series.

 

 

PNP transistor

VDD

 

VCC

VDD

 

VBAT

S1F77210Y

VO

NPN transistor

 

 

 

VSS

 

 

Enable signal

Figure 5-15 Battery backup circuit

5–20

EPSON

S1F70000 Series Technical Manual