NJU7708/09
VOLTAGE DETECTOR with Delay Function
GENERAL DESCRIPTION
The NJU7708/09 is a low quiescent current voltage
detector with delay function featuring high precision
detection voltage.
The detection voltage is fixed internally with an accuracy
of 1.0%.
NJU7708 is Nch. Open Drain and NJU7709 of output
circuit form is a C-MOS output.
PACKAGE OUTLINE
NJU7708/09F
FEATURES
High Precision detection Voltage
±1.0%
Low Quiescent Current
1.3µA
Detection Voltage Range
1.5
∼
6.0V(0.1V step)
Adjustable Delay Time (D1/D2 2bit control) 0ms/50ms/100ms/200ms
Output Circuit Form
NJU7708: Nch. Open Drain Type
NJU7709: C-MOS Output Type
CMOS Technology
Package Outline
SOT-23-5 (MTP5)
PIN CONFIGURATION
5
4
1 2 3
NJU7708/09F
PIN FUNCTION
1. D1
2. V
SS
3. D2
4. V
OUT
5. V
DD
DETECTION VOLTAGERANK LIST
Device Name
V
DET
NJU7708/09F15
1.5V
NJU7708/09F27
2.7V
NJU7708/09F42
4.2V
NJU7708/09F06
6.0V
Logical Table of Delay Time
D1
D2
DELAY
H
H
0mS
H
L
50mS
L
H
100mS
L
L
200mS
Ver.2004-03-09
-1-
NJU7708/09
EQUIVALENT CIRCUIT
NJU7708
V
DD
NJU7709
Delay Circuit
Vref
V
OUT
Vref
Delay Circuit
V
OUT
V
SS
D1
D2
D1
D2
-2-
Ver.2004-03-09
NJU7708/09
NJU7708
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
DD
Output Voltage
V
OUT
Output Current
I
OUT
Power Dissipation
P
D
Operating Temperature
Topr
Storage Temperature
Tstg
RATINGS
+10
V
SS
-0.3
∼
+10
50
200
-40
∼
+85
-40
∼
+125
(Ta=25°C)
UNIT
V
V
mA
mW
°C
°C
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Detection Voltage
V
DET
Hysterisis Voltage
Quiescent Current
Output Current
Output Leak Current
Detection Voltage
Temperature
Coefficient
Delay Time
V
HYS
I
SS
I
OUT
I
LEAK
TEST CONDITION
MIN.
-1.0%
70
TYP.
−
90
1.0
1.3
2.0
7.0
−
±100
100
50
100
200
−
−
−
(Ta=25°C)
MAX. UNIT
+1.0%
V
130
1.7
2.2
−
−
0.1
−
300
57.5
115
230
V
DD
0.3
9
V
µA
µA
mA
mA
µA
ppm/°C
µS
mS
mS
mS
V
V
V
V
DD
=V
DET
+1V
Nch,V
DS
=0.5V
V
DD
=V
OUT
=9V
V
DET
=1.5V
∼
1.9V Version
V
DET
=2.0V
∼
6.0V Version
V
DD
=1.2V
V
DD
=2.4V (
≥
2.7V Version)
−
−
0.75
4.5
−
−
∆V
DET
/∆Ta Ta=0
∼
+85°C
D1=H, D2=H
D1=H, D2=L
D1=L, D2=H
D1=L, D2=L
td
V
D1_H
/ V
D2_H
V
D1_L
/ V
D2_L
V
DD
V
DD
=V
DET
+1V,
Delay Time control
Voltage
25
42.5
85
170
1.5
0
0.7
Operating Voltage
(*note 1)
R
L
=100kΩ
(*note 1): The minimum Operating Voltage(V
OPL
) indicates the same value of the output voltage(V
OUT
) on
condition that V
OUT
becomes 10% or less of the input voltage(V
DD
).
Ver.2004-03-09
-3-
NJU7708/09
TEST CIRCUIT
Quiescent Current TEST CIRCUIT
Detection Voltage
/Minimum Operating Voltage TEST CIRCUIT
I
SS
A
V
DD
V
DET
/
V
OPL
V
OUT
V
DD
D2
D1
V
V
DD
R
L
V
OUT
V
D2
V
OUT
NJM7708
D1
NJM7708
V
SS
V
SS
Leak Current/Output Current TEST CIRCUIT
Delay Time=0mS TEST CIRCUIT
Oscilloscope
I
OUT
/
I
LEAK
V
DD
V
DD
D1
V
OUT
A
V
DD
V
DD
V
OUT
R
L
ch1
ch2
NJM7708
D2
V
OUT
/
V
DS
NJM7708
D1
D2
V
SS
V
SS
Delay Time=50mS TEST CIRCUIT
Oscilloscope
Delay Time=100mS TEST CIRCUIT
Oscilloscope
R
L
V
DD
V
DD
V
OUT
ch1
ch2
R
L
V
DD
V
DD
V
OUT
ch1
ch2
NJM7708
D1
D2
NJM7708
D1
D2
V
SS
V
SS
-4-
Ver.2004-03-09
NJU7708/09
Delay Time=200mS TEST CIRCUIT
Oscilloscope
R
L
V
DD
V
DD
V
OUT
ch1
ch2
NJM7708
D1
D2
V
SS
TYPICAL APPLICATION
1
Power Supply Voltage Supervisory Circuit
V
DD
R
L
V
DD
V
OUT
NJM7708
D1
D2
Reset Signal
INPUT
Micro-Processor
etc
V
SS
2
Power Supply Voltage Supervisory Circuit
(
Another Power Supply to Micro-Processor
)
V
DD
1
V
DD
2
R
L
V
DD
V
OUT
NJM7708
D1
D2
Reset Signal
INPUT
Micro-Processor
etc
V
SS
Ver.2004-03-09
-5-
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