This product complies with the RoHS Directive (EU 2002/95/EC).
Volyage Detector IC
MN1382S
CMOS IC for Voltage Detection
Overview
The MN1382S are elements that monitor the power supply voltage supplied
to microcomputers and other LSI systems and issue reset signals for initializing
the system after the power is
first
applied or for preventing runaway operation
when the supply voltage
fluctuates.
This is a CMOS output, choose the ideal element for your application from
the series' wide selection of detection ranks (16 ranks 2.0 V to 4.7 V).
There is other output type, N-channel open drain output (MN13821S) and
inverted CMOS output (MN13822S).
Package
Code
MINI-3DC
name
Pin
1: Out Reset signal output pin
2: V
SS
Ground pin
3: V
DD
Power supply pin
3
SC
1
2
Features
Three-pin element requiring no adjustment
Wide selection of detection ranks (16 ranks 2.0 V to 4.7 V)
Highly precise detection voltage
Detection voltage with hysteresis characteristic
∆VD
= 50 mV for ranks C to K
∆VD
= 100 mV for ranks L to T
current consumption: I
DD
= 1
µA
(typ.) for V
DD
= 5 V
Low
fluctuation
in detection voltage with tempera-ture (1 mV/°C (typ.))
Low
Note) Rank symbol will be marked on the
package in the
area.
Applications
Battery checkers
Power outage detectors
Level discriminators
Memory backup systems
Microcomputer reset circuits
Reset circuits for other electronic circuits
Block Diagram
3
Voltage
Reference 1
Level Converter
Voltage
Reference 2
Comparator
V
DD
Comparator
+
−
+
−
*1
Output Circuit
1
OUT
2
V
SS
Note) *1 : Circuits vary slightly depending on the output type (CMOS output, N-channel open drain output, or inverted CMOSoutput)
Publication date: November 2007
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This product complies with the RoHS Directive (EU 2002/95/EC).
MN1382S
Detection Ranks (on Voltage)
Rank
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
Detection Voltage for Drop in Power Supply Voltage V
DL
Min
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.8
3.0
3.2
3.4
3.6
3.8
4.0
4.2
4.4
Max
2.2
2.3
2.4
2.5
2.6
2.7
2.9
3.1
3.3
3.5
3.7
3.9
4.1
4.3
4.5
4.7
100
V
300
mV
50
Unit
Detection Voltage Hysteresis Width
∆VD
Min
max
Unit
Absolute Maximum Ratings
V
SS
= 0 V, T
a
= 25°C
Parameter
Power supply voltage
Output voltage
Operating ambient temperature
Storage temperature
Symbol
V
DD
V
O
T
opr
T
stg
Rating
7.0
– 0.3 to V
DD
+ 0.3
–20 to +70
–55 to +125
Unit
V
V
°C
°C
Recommended Operating Conditions
V
SS
= 0 V, T
a
= 25°C
Parameter
Power supply voltage
Symbol
V
DD
Conditions
See Figures 1 and 4
Min
1.5
Typ
Max
6.0
Unit
V
Application Circuit Example
Sample Circuit 1
V
DD
OUT
C
Sample Circuit 2
V
DD
R
OUT
C
MN1382S
MN1382S
Note) Connect resistors, capacitors, and the like only to the output pin on the MN1382S element.
Note that connect-ing them to the power source pins changes V
DH
, V
DL
, and
∆
VD. Select the values of R and C to match the application.
2
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This product complies with the RoHS Directive (EU 2002/95/EC).
MN1382S
Electrical Characteristics
Characteristics V
SS
= 0 V, T
a
= –20°C to +70°C
DC
Parameter
Power supply current
Detection voltage for drop in power supply voltage
Detection voltage hysteresis width
High level output voitage
Low level output voitage
Symbol
I
DD
V
DL
∆VD
V
OH
V
OL
Conditions
V
DD
= 5 V
*
, Load resistor 10 kΩ
T
a
= 25°C
See Figures 1 and 4
I
OH
=
–40
µA
V
DD
= 1.8 V, I
OH
= 0.7 mA
Min
Typ
1
Max
5
Unit
µA
V
mV
V
V
For particulars, see the detection
voltage rank table.
0.8 V
DD
V
SS
V
DD
0.4
Note) *: This includes the output pin's leakage current.
Characteristics V
SS
= 0 V, T
a
= 25°C
AC
Parameter
Symbol
Conditions
Rank
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
C
D
E
F
G
H
J
K
L
M
N
P
Q
R
S
T
Allowable Value (typ)
Unit
3.0
Reset release time
t
OH
See Figures 2 and 3
µs
4.0
250.0
115.0
70.0
µs
Reset time
t
OL
See Figures 2 and 3
15.0
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This product complies with the RoHS Directive (EU 2002/95/EC).
MN1382S
Reference Data
V
DD
V
DH
V
DL
1.5 V
0V
CMOS output
MN1382S
t
V
OUT
t
OH
t
OH
t
OL
0V
t
OL
t
Figure 1. Description of Operation
Note) 1. Output cannot be specified for power supply voltages under 1.5 V because operation is not guaranteed for that range.
2. V
DL
: Detection voltage for drop in power supply voltage
V
DH
: Detection voltage for rise in power supply voltage
t
OL
: Time lag between the time that the power supply voltage reaches the detection voltage (V
DL
or V
DH
) and the time that theoutput pin (OUT) goes to Low level.
t
OH
: Time lag between the time that the power supply voltage reaches the detection voltage (V
DL
or V
DH
) and the time that theoutput pin (OUT) goes to High level.
V
DD
6.0 V
1.6 V
0V
6.0 V
CMOS output
MN1382S
t
1.5 V
1.0 V
0V
t
OH
t
OL
t
Figure 2. Description chart of Measuring the Output Characteristics
4
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This product complies with the RoHS Directive (EU 2002/95/EC).
MN1382S
Reference Data (Continued)
V
DD
MN1382S
100 pF
V
OUT
Figure 3. Circuit for Measuring the Output Characteristics
V
OUT
CMOS output
MN1382S
∆VD
Operation
indeterminate
0
0
1.5 V
V
DL
V
DH
V
DD
Figure 4. Description chart for Measuring the I/O Characteristics
Note) 1. Output cannot be specified for power supply voltages under 1.5 V because operation is not guaranteed for that range.
2. V
DL
: Detection voltage for drop in power supply voltage
V
DH
: Detection voltage for rise in power supply voltage
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