NJM#2078D NJR, NJM#2078D Datasheet - Page 6
NJM#2078D
Manufacturer Part Number
NJM#2078D
Description
Supervisory Circuits _
Manufacturer
NJR
Datasheet
1.NJM2078M.pdf
(8 pages)
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
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
- 6 -
3. Detection of Abnormal Operating Voltage
4. Programmable Zener
5. Reset Circuit for Decreased Operating Voltage
V
Can use channel B independently.
R
Z
2
・
=
・
V
+
z
1
R
+
3
R
R
≤V
2
3
V −
V
+
R
Comparate Voltage and hysterisis width can be
adjustabel by R
● Power-on reset time t
● Transistor ; Recommended h
● Rapid Signal Off ; Be care to remained charge
● Reverse polarity output OUT : Open collector.
R
1
t
of C
V
RST
V
V
+
Note : V
+
z
V
V
(
(
H
) L
= -C
1
≤6mA
+
. It affects to t
+
)
H
L
=
=
=
=
1
R
V
R
+
1
+
1
1
4
L
(
+
≥2.5V
) L
I
+
+
n
1
R
R
R
R
R
R
R
to R
2
3
1
3
2
1
4
1
R (
+
−
RST
R
4
R
V
V
. Roughly.
2
3
V
V
R
R
R
RST
3
TH
+
+
4
V
R
(roughly)
TH
3
1
)
+
V
FE
R
TH
2
= 50 to 200
R
+
1
Ver.2003-12-09
R
3