147
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■GENERAL DESCRIPTION
ELM 97xxxxA Series is a CMOS voltage detector IC for battery-operated portable devices. It consists of a
very low-power-consumption reference voltage source, a comparator, an output driver, a hysteresis circuit,
and detection voltage setting resistors. Output logic is positive, therefore output level is low when VDD is
lower than detection voltage.
It can be used as a reset controller in microcomputer-based systems. And it can be widely applied to the
devices, such as battery checkers, switching circuit of back-up power source, power failure detectors, etc.
Two output styles are available, N-ch opendrain and CMOS output.
It is available in SOT-89 and SOT-23.
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■FEATURES
・Low power operation : TYP. 1.0μA (VDD = 1.5V)
・Low voltage operation : Reset operation assured at 0.8V
・High accuracy of detection voltage : ±2.5%
・Low temperature coefficient : TYP. -300ppm/℃ (Detection voltage ＜2.0V)
: TYP. -100ppm/℃ (Detection voltage ≧2.0V)
・Very small package : SOT-89, SOT-23
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■APPLICATION
・Reset for microcomputer
・Battery checker
・Power failure detector
・Switching of back-up power source
Pin No. Pin Name
1OUT
2VDD
3VSS
ELM97xxxxA ELM97xxxxA
ELM97xxxxA ELM97xxxxA
ELM97xxxxA VOLTAGE DETECTOR
Pin No. Pin Name
1OUT
2VSS
3VDD
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■PIN CONFIGURATION
123
( TOP VIEW )
SOT-89
12
3
( TOP VIEW )
SOT-23
148
VOLTAGE DETECTOR ELM97xxxxA
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■SELECTION GUIDE
Symbol
Ex 09 : VDETN = 0.9V
27 : VDETN = 2.7V
45 : VDETN = 4.5V
C : CMOS Output
N : N-ch Opendrain Output
A : SOT-89
B : SOT-23
eProduct Version A : A Version
dPackage
a, b Detection Voltage
cOutput Form
ELM97 x x x x AELM97 x x x x A
ELM97 x x x x AELM97 x x x x A
ELM97 x x x x A
↑↑↑↑↑↑↑↑↑↑
↑↑↑↑↑↑↑↑↑↑
↑↑↑↑↑
a b c d ea b c d e
a b c d ea b c d e
a b c d e
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■SERIES
Detection Output Detection Output
Voltage Form Voltage Form
ELM9709NBA-S(N) 0.9V N-ch SOT-23 ELM9727CAA-S(N) 2.7V CMOS SOT-89
ELM9710NBA-S(N) 1.0V N-ch SOT-23 ELM9730CAA-S(N) 3.0V CMOS SOT-89
ELM9711NBA-S(N) 1.1V N-ch SOT-23 ELM9732CAA-S(N) 3.2V CMOS SOT-89
ELM9722CAA-S(N) 2.2V CMOS SOT-89 ELM9734CAA-S(N) 3.4V CMOS SOT-89
ELM9724CAA-S(N) 2.4V CMOS SOT-89 ELM9745CAA-S(N) 4.5V CMOS SOT-89
ELM9725CAA-S(N) 2.5V CMOS SOT-89 ELM9748CAA-S(N) 4.8V CMOS SOT-89
S type : Standard, N type : Reverse
Model Package Model Package
* Available 0.9V～5.0V detection voltage for N-ch output and 2.0V～5.0V detection voltage for CMOS
output at 0.1V step as semi-custom-made IC.
149
VOLTAGE DETECTOR ELM97xxxxA
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■MARKING
SOT-89
①②
③④
SOT-23
①②③④
Rule 2
①: Represents the ELM97xxxxA series
ELM97xxxxA series = A
②: Represents the integer digit of the detection voltage
③ : Represents the decimal digit of the detection voltage
④ : Represents the assembly lot number
0～9, A～Z repeated (I,O,X excepted)
Symbol Detection Voltage Symbol Detection Voltage
00.*V (N-ch) Y2.*V (CMOS)
11.*V (N-ch) W3.*V (CMOS)
22.*V (N-ch) U4.*V (CMOS)
33.*V (N-ch) V5.*V (CMOS)
44.*V (N-ch)
55.*V (N-ch)
Symbol Detection Voltage Symbol Detection Voltage
0*.0V 5*.5V
1*.1V 6*.6V
2*.2V 7*.7V
3*.3V 8*.8V
4*.4V 9*.9V
Rule 1
①: Represents the integer digit of the detection voltage
②: Represents the decimal digit of the detection voltage
③ : Represents the assembly lot number
A～Z repeated (I,O,X excepted)
④ : Represents the assembly lot number
0～9 repeated
Symbol Detection Voltage Symbol Detection Voltage
A0.*V (N-ch) P2.*V (CMOS)
B1.*V (N-ch) R3.*V (CMOS)
C2.*V (N-ch) S4.*V (CMOS)
D3.*V (N-ch) T5.*V (CMOS)
E4.*V (N-ch)
F5.*V (N-ch)
Symbol Detection Voltage Symbol Detection Voltage
0*.0V 5*.5V
1*.1V 6*.6V
2*.2V 7*.7V
3*.3V 8*.8V
4*.4V 9*.9V
*Remarks --- ELM97xxxxA series have two kind of mraking rules each package.
150
VOLTAGE DETECTOR ELM97xxxxA
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■TIMING CHART
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■BLOCK DIAGRAM
1.CMOS Output 2.N-ch Opendrain Output
VREF
VDD
OUT
VSS
+
-
VDD
VSS
VREF +
-
OUT
VDETN VHYS
VopMin
tPHL tPLH
VSS
VSS
VDETP
VDD
OUT
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■MAXIMUM ABSOLUTE RATINGS
(VSS=0V)
Parameter Limits Units
Power Supply Voltage 10 V
CMOS VSS-0.3～VDD+0.3
N-ch VSS-0.3～+10
Output Current 50 mA
SOT-89 300
SOT-23 200
Operating Temperature -30～+80
Storage Temperature -40～+125
Output Voltage
Power Dissipation
VOUT
Pd
Symbol
VDD
IOUT
Top
Tstg
V
mW
℃
151
VOLTAGE DETECTOR ELM97xxxxA
ELM9709NBA
ELM9709NBAELM9709NBA
ELM9709NBA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 0.878 0.900 0.922 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=1.5V - 1.0 3.0 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
Output Current IOUTN VDD=0.8V, VDS=0.5V 0.02 0.1 - mA 3
Delay Time tPHL 2.0 mS 5
Temperature
Characteristics
of VDETN
Remarks ) Test circuit No.
2
-Top=-30～+80℃- -0.27 -
Hysteresis width VHYS
mV/℃
-V
△VDETN
△Top
ELM9710NBA
ELM9710NBAELM9710NBA
ELM9710NBA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 0.975 1.000 1.025 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=1.5V - 1.0 3.0 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
Output Current IOUTN VDD=0.8V, VDS=0.5V 0.02 0.1 - mA 3
Delay Time tPHL 2.0 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
V2-
Hysteresis width VHYS
△VDETN
△Top -mV/℃-Top=-30～+80℃- -0.30
ELM9711NBA
ELM9711NBAELM9711NBA
ELM9711NBA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 1.073 1.100 1.127 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=1.5V - 1.0 3.0 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
Output Current IOUTN VDD=0.8V, VDS=0.5V 0.02 0.1 - mA 3
Delay Time tPHL 2.0 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
V2
Hysteresis width -
VHYS
△VDETN
△Top mV/℃-Top=-30～+80℃--0.33-
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■ELECTRICAL CHARACTERISTICS
152
VOLTAGE DETECTOR ELM97xxxxA
ELM9722CAA
ELM9722CAAELM9722CAA
ELM9722CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 2.145 2.200 2.255 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=3.0V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=4.5V, VDS=2.1V 0.5 1.5 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
△VDETN
△Top
Output Current
Hysteresis width VHYS -V2
mV/℃-Top=-30～+80℃- -0.22 -
ELM9724CAA
ELM9724CAAELM9724CAA
ELM9724CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 2.340 2.400 2.460 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=3.0V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=4.5V, VDS=2.1V 0.5 1.5 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
V2
-
Hysteresis width VHYS
-mV/℃-
Output Current
Top=-30～+80℃--0.24
△VDETN
△Top
ELM9725CAA
ELM9725CAAELM9725CAA
ELM9725CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 2.438 2.500 2.562 V 2
VDETN - VDETN
×0.02 ×0.08
Current Consumption ISS VDD=3.0V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=4.5V, VDS=2.1V 0.5 1.5 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
-0.25 -
Hysteresis width VHYS
Top=-30～+80℃-
Output Current
△VDETN
△Top mV/℃-
V2
153
VOLTAGE DETECTOR ELM97xxxxA
ELM9727CAA
ELM9727CAAELM9727CAA
ELM9727CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 2.633 2.700 2.767 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=4.5V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=4.5V, VDS=2.1V 0.5 1.5 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
△VDETN
△Top
Hysteresis width VHYS V
Output Current
2
-
Top=-30～+80℃--0.27-mV/℃-
ELM9730CAA
ELM9730CAAELM9730CAA
ELM9730CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 2.925 3.000 3.075 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=4.5V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=4.5V, VDS=2.1V 0.5 1.5 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
△VDETN
△Top
2
-
Top=-30～+80℃-0.30 - -mV/℃-
Hysteresis width VHYS V
Output Current
ELM9732CAA
ELM9732CAAELM9732CAA
ELM9732CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 3.120 3.200 3.280 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=4.5V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=4.5V, VDS=2.1V 0.5 1.5 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
△VDETN
△Top
V2
-
Top=-30～+80℃- -0.32 - mV/℃-
Hysteresis width VHYS
Output Current
154
VOLTAGE DETECTOR ELM97xxxxA
ELM9734CAA
ELM9734CAAELM9734CAA
ELM9734CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 3.315 3.400 3.485 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=4.5V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=4.5V, VDS=2.1V 0.5 1.5 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
-
△VDETN
△Top
Output Current
-
2
Hysteresis width -
Top=-30～+80℃-
VHYS V
-0.34 mV/℃
ELM9745CAA
ELM9745CAAELM9745CAA
ELM9745CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 4.388 4.500 4.612 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=6.0V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=6.0V, VDS=2.1V 0.5 2.0 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
△VDETN
△Top
Output Current
Hysteresis width VHYS -V2
Top=-30～+80℃--0.45- -mV/℃
ELM9748CAA
ELM9748CAAELM9748CAA
ELM9748CAA (Top=25℃)
Parameter Symbol Conditions Min. Typ. Max. Units Remarks
Detection Voltage VDETN 4.680 4.800 4.920 V 2
VDETN VDETN
×0.02 ×0.08
Current Consumption ISS VDD=6.0V - 1.5 4.5 μA1
Operating Voltage VDD 0.8 - 6.0 V 2
IOUTN VDD=1.5V, VDS=0.5V 1.0 2.0 - mA 3
IOUTP VDD=6.0V, VDS=2.1V 0.5 2.0 - mA 4
Delay Time tPHL 0.1 mS 5
Temperature
Characteristic
of VDETN
Remarks ) Test circuit No.
2
-
Top=-30～+80℃--
Hysteresis width VHYS V
-0.48 - mV/℃
Output Current
△VDETN
△Top
155
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■TYPICAL CHARACTERISTICS
● ELM9711NxA
VOLTAGE DETECTOR ELM97xxxxA
0.2 0.4 0.6 0.8
0.2
0.4
0.6
0.8
1
0VDS (V)
IOUT (mA)
IOUT - VDS
VDD=1.0V
VDD=0.8V
123
1
2
3
4
0VDD (V)
ISS (μA)
ISS - VDD
80℃
25℃
-30℃
0.6 0.8 11.2 1.4
0
0.5
1
1.5
2
VDD (V)
IOUT (mA)
IOUT - VDD
-30℃
25℃
80℃
123
1
2
3
4
0VDD (V)
VOUT (V)
VOUT - VDD
-30℃
25℃
80℃
(3V Pullup 1MΩ)
-20 020 40 60 80
1.1
1.2
Top ( ℃)
VDET (V)
VDET - To p
VDETN
VDETP
0.001 0.01 0.1 1
0.1
1
10
100
CL (μF)
tPHL,tPLH (ms)
tPHL,tPLH - VDD
tPHL
tPLH
156
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■TEST CIRCUITS
1. Current Consumption 2. Detection Voltage
* R=1MΩ
ELM97
Series
ELM97
Series
ELM97
ELM97
Series Series
ELM97
Series
3. Output Current (N-ch) 4. Output Current (P-ch)
5. Delay Time Input Pulse
* R=1MΩ
R is unnecessary for CMOS output products.
A
A
A
V
V
V
V
V
P.G.
→
3 or 6V
0.8V
VSS
VSS
VSS VSS
VSS
VSS
VDD VDD
VDD VDD
VDD
VDD VDD
VDD VDD
OUT
OUT
VDETN
3V
R*
OUT VDS VDS
OUT
OUT
R*
CL
3V
VOLTAGE DETECTOR ELM97xxxxA
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