MC34161, MC33161, NCV33161

http://onsemi.com

8

The above figure shows the MC34161 configured as a dual positive overvoltage detector. As the input voltage increases from ground, the LED will turn ‘ON’ when

For known resistor values, the voltage trip points are:

For a specific trip voltage, the required resistor ratio is:

) 1

) 1

+

* 1

+

* 1

Figure 16. Dual Positive Overvoltage Detector

8

+

1.27V

+

1.27V

+

2.8V

+

0.6V

+

-

2.54V

Reference

-

+

-

+

+

-

4

1

7

2

3

5

6

Output

Voltage

Pins 5, 6

GND

LED `ON'

GND

The above figure shows the MC34161 configured as a dual positive undervoltage detector. As the input voltage decreases towards ground, the LED will turn ‘ON’

) 1

) 1

+

* 1

+

* 1

For known resistor values, the voltage trip points are:

For a specific trip voltage, the required resistor ratio is:

Figure 17. Dual Positive Undervoltage Detector

+

1.27V

+

1.27V

+

2.8V

+

0.6V

+

-

8

-

+

-

+

+

-

4

1

7

2

3

5

6

2.54V

Reference

Output

Voltage

Pins 5, 6

GND

LED `ON'

GND