NJM2078D NJR, NJM2078D Datasheet - Page 5

• Manufacturer Part Number: NJM2078D
• Description: Supervisory Circuits _
• Manufacturer: NJR

Specifications of NJM2078D

• Number Of Voltages Monitored: 2
• Monitored Voltage: 1.2 V
• Manual Reset: Not Resettable
• Watchdog: No Watchdog
• Supply Voltage (max): 21 V
• Supply Current (typ): 600 uA
• Maximum Power Dissipation: 500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: Through Hole
• Package / Case: DIP-8
• Minimum Operating Temperature: - 40 C
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

■ 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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