NJM#2078D NJR, NJM#2078D Datasheet - Page 5

• Manufacturer Part Number: NJM#2078D
• Description: Supervisory Circuits _
• Manufacturer: NJR

Specifications of NJM#2078D

• Product Category: Supervisory Circuits
• Rohs: yes
• Number Of Voltages Monitored: 2
• Monitored Voltage: 1.2 V
• Undervoltage Threshold: 1.15 V
• Overvoltage Threshold: 1.25 V
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Supply Voltage - Max: 21 V
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: DIP-8
• Maximum Power Dissipation: 500 mW
• Minimum Operating Temperature: - 40 C
• Factory Pack Quantity: 50
• Supply Current (typ): 600 uA

■ TYPICAL APPLICATION
Ver.2003-12-09
1. Hysterisis
2. Detection of Abnormal Supply Voltage
Each equation is calculated without considering the
saturation voltage. It is necessary to compensate by
the saturation voltage fit to lead conditions, precisely.
Hysterisis ; Positive feedback from pin 2 or pin 7 (ref.1).
V
V
V
V
Note : V
V
V
IN(A)
IL(A)
IN(B)
IL(B)
+
+
H
L
･
･
=
=
･
･
=
=
･
･
=
=
･
･

 


 


 


 

1
1

 


 

1
1
+
1
1
+
+
≥2.5V
+
+
+
+
R
R
R
R
R
R
R
R
R
R
2
3
2
1
2
1
R
1
2
3
4
R

 

+

 

+

 


 

3
1
V
V
R
R
V
V
R
R
R
2
R
3

 


 

V
V
R
R
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