TP2021/TP2025

SC70, 1.8V, Nano-power Comparators with Voltage Reference

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r

V

R2

2

1

tr

V

R

R 



DD

V

R2

1

r

V

R2

2

1

tf

V

R

R

R







DD

V

R2

1

tf

V

tr

V

hyst

V

R







As for the TP2025/TP2025U, a pull-up resistor should be placed between output and the supply. The formula for

tf

V

2

1

1

)

tf

V

DD

(V

r

V











R PU

R

R

R

 

DD

V

2

1

r

V

2

2

1

tf

V

R PU

R

R

R PU

R

R PU

R

R













 

DD

V

2

1

hyst

V

R PU

R

R





Inverting Comparator with Hysteresis

The inverting comparator with hysteresis requires a two-resistor network that is referenced to the comparator supply

 

Figure 5. Inverting Configuration with Hysteresis

ref

ref

V

)

V

DD

(V

1

2

1

tr

V









R

R

R

ref

V

2

1

2

tf

V

R

R

R



