S1F77200Y Series

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.

VDD

VDD

R

VDD

C

S1F77200Y OUT VO

VSS

Figure 5-16 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.

 

 

 

PNP transistor

VDD

 

 

VCC

 

VDD

 

VBAT

 

 

 

 

S1F77200Y

VO

NPN transistor

 

 

 

 

 

 

VSS

 

 

Enable signal

Figure 5-17 Battery backup circuit

S1F77200Y

Series

 

 

S1F70000 Series Technical Manual

EPSON

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