NJU7704/05
VOLTAGE DETECTOR
GENERAL DESCRIPTION
The NJU7704/05 is a low quiescent current voltage detector
featuring high precision detection voltage.
The detection voltage is internally fixed with an accuracy of
1.0%.
The NJU7704/05 are useful for preventing malfunction of
microcomputer or DSP etc. through detect a drop in voltage of battery
or power supply.
The delay function achieves set wait time when supply voltage
is unstable. Moreover, the delay function can make a sequence
that other devices in application work and stabilize before
microcomputer or DSP works.
Delay time can be set by an external capacitor. Manual reset
function can output reset signal irrespective of detection voltage.
NJU7704 is Nch. Open Drain and NJU7705 is a C-MOS output
type.
Small packaging makes NJU7704 and NJU7705 suitable for
space conscious applications.
FEATURES
High Precision Detection Voltage
±1.0%
Low Quiescent Current
0.9µA typ.
Detection Voltage Range
1.5∼6.0V(0.1V Step)
Adjustable delay time with external capacitor
Manual Reset
Active “L” : NJU770****A
Active "H" : NJU770****B
Output Configuration
NJU7704: Nch. Open Drain type
NJU7705: C-MOS Output type
Package Outline
SOT-23-5: NJU770*F
SC88A : NJU770*F3
PIN CONFIGURATION
5
4
PACKAGE OUTLINE
NJU7704/05F
NJU7704/05F3
1 2 3
NJU770*F/F3
PIN FUNCTION
1.Cd
2.V
SS
3.MR
4.V
OUT
5.V
DD
Ver.2008-07-04
-1-
NJU7704/05
(Ta=25°C)
RATINGS
UNIT
+10
V
V
V
SS
-0.3∼+10
V
V
SS
-0.3∼V
DD
+0.3
V
V
SS
-0.3∼V
DD
+0.3
50
mA
350(*1)
SOT-23-5
Power Dissipation
P
D
mW
200(*2)
SC88A
250(*1)
Operating Temperature
Topr
-40
∼
+85
°C
Storage Temperature
Tstg
-40
∼
+125
°C
(*1) : Mounted on glass epoxy board based on EIA/JEDEC. (114.3x76.2x1.6mm: 2Layers)
(*2) : Device itself
ELECTRICAL CHARACTERISTICS
PARAMETER
SYMBOL
Detection Voltage
V
DET
Hysteresis Voltage
V
HYS
Quiescent Current
Output Current
Output Leak Current
Detection Voltage
Temperature
Coefficient
Delay Time
Input Voltage of
MR pin (Active "L")
Input Voltage of
MR pin (Active "H")
Impedance of
MR pin
Operating Voltage (*3)
I
SS
I
OUT
I
LEAK
∆V
DET
/∆Ta
t
d
V
MR_H
V
MR_L
V
MR_H
V
MR_L
R
MR
V
DD
(Ta=25°C)
MAX.
UNIT
+1.0%
V
130
mV
1.5
µA
2.0
-
mA
-
0.1
µA
-
12
V
DD
0.3
V
DD
V
DD
-1.5
3.0
ppm/°C
ms
V
V
MΩ
NJU7704
ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
Input Voltage
V
DD
Output Voltage
V
OUT
Input Voltage of Cd pin
V
Cd
Input Voltage of MR pin
V
MR
Output Current
I
OUT
TEST CONDITION
V
DD
=V
DET
+1V
Nch,V
DS
=0.5V
V
DD
=V
OUT
=9V
Ta=0∼+85°C
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)
MIN.
-1.0%
70
-
-
0.75
4.5
-
-
8
1.5
0
V
DD
-0.3
0
1.0
TYP.
-
90
0.7
0.9
2.0
7.0
-
±100
10
-
-
-
-
2.0
V
DD
=V
DET
+1V, Cd=4.7nF
0.8
-
9
V
R
L
=100kΩ
(*3): The minimum operating voltage(V
OPL
) indicates the same value of the input voltage(V
DD
) on condition that V
OUT
becomes 10% or less of the input voltage(V
DD
).
-4-
Ver.2008-07-04
NJU7704/05
TEST CIRCUIT
Circuit Operating Current TEST CIRCUIT
I
SS
A
V
DD
Detection voltage/Minimum operating voltage
V
DET
/
V
OPL
R
L
V
DD
V
OUT
V
MR
V
OUT
V
OUT
V
DD
V
NJU7704
V
DD
Cd
V
SS
MR
NJU7704
Cd
V
SS
MR pin Input voltage TEST CIRCUIT
Leak current / Output current TEST CIRCUIT
R
L
V
DD
V
DD
Cd
V
OUT
V
MR
V
MR
V
V
MR
V
OUT
I
LEAK
/
I
OUT
V
DD
V
DD
Cd
V
OUT
A
NJU7704
NJU7704
MR
V
OUT
/
V
DS
V
SS
V
SS
Delay time TEST CIRCUIT
Oscilloscope
R
L
V
DD
V
DD
Cd
Cd
V
OUT
ch1
ch2
NJU7704
MR
V
SS
Ver.2008-07-04
-5-
嵌入式系统
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