2ChannelVoltageDetectors
Series
169
2
■GeneralDescription ■Features
■Applications
VIN
VIN2
VDET1
VSS
VIN1
VDET2
R
R=100kΩ
VDET1：CMOS,VDET2：N-chOpendrain
■TypicalApplicationCircuit ■TypicalPerformance
Characteristic
SUPPLY CURRENT vs. INPUT VOLTAGE
●Memory battery back-up circuitry
●Microprocessor reset circuits
●Power failure detection
●System power-on reset circuits
●
System battery life monitors and re-charge voltage monitors
●Delay circuitry
◆CMOS Low Power Consumption
◆2 Voltage Detectors Built-in
◆Detect Voltage Accuracy : ± 2%
◆Detect Voltage Range : 1.5V ~ 5.0V
◆SOT-25 Package
The XC612 series consist of 2 voltage detectors, in 1 mini-molded, SOT-
25 package.
The series provides accuracy and low power consumption through
CMOS processing and laser trimming and consists of a highly accurate
voltage reference source, 2 comparators, hysteresis and output driver
circuits.
The input (VIN1) for voltage detector 1 (VD1) dually functions as the power
supply pin for both detector 1 (VD1) and detector 2 (VD2).
Highly accurate : Set-up voltage accuracy ±2%
Low-power consumption :
Typ.2.0µA (VIN1=VIN2=2.0V, quiescent state)
Detect voltage : 1.5V ~ 5.0V programmable in
0.1V steps. Detector’s voltages
can be set-up independently
Conditionaly,
XC612N : VDET1>VDET2
XC612D, XC612E : VDET1≥VDET2,
VDET1<VDET2
Operating Voltage Range : 1.5V ~ 10.0V
Temperature characteristics : ±100ppm/°C
Output configuration : N-channel open drain
Small package : SOT-25 (150mW) mini-mold
* CMOS Output is under development
0
1.0
2.0
3.0
4.0
5.0
6.0
0246810
25℃ Ta=80℃
-30℃
ＸＣ６１２Ｎ３６３２
Supply Current: Iss (µA)
Input Voltage: VIN1 (V)
(V
IN1
＝V
IN2
)
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XC612Series
170
2
■PinConfiguration ■PinAssignment
■ProductClassification
●Selection Guide
●Ordering Information
SOT-25
（TOPVIEW）
5 4
VDET2
VDET1
ＶIN2
VIN1 VSS
1 32
PIN NUMBER
1
PIN NAME FUNCTION
2
4
5
Detector 1 input,
Power Supply.
Voltage Detector 1 output
Voltage Detector 2 Input
Voltage Detector 2 Output
3 Ground
V
DET1
V
IN2
V
DET2
V
IN1
V
SS
Type VDET1 VDET2
XC612N N-chOpendrain N-chOpendrain
XC612D N-chOpendrain CMOS
XC612E CMOS N-chOpendrain
↑
↑
↑
↑↑
a b c de
XC612 x x x x x x x
e.g.33
=
3.3V
50
=
5.0V
DESIGNATOR
a
d
e
b
c
DESCRIPTION DESIGNATOR DESCRIPTION
Output Configuration:
N=N-Channel Open Drain
D=V
DET1
N-ch Open Drain, V
DET2
CMOS
E=V
DET1
CMOS, V
DET2
N-ch Open Drain
Detect Voltage (V
DET1
)
e.g.25
=
2.5V
38
=
3.8V
Detect Voltage (V
DET2
)
Package Type:
M=SOT-25
Device Orientation
R=Embossed Tape (Orientation of Device: Right)
L=Embossed Tape (Orientation of Device: Left)
02S05XC612 02.09.12 14:15 ページ170
XC612
Series
171
2
■Marking
■PackagingInformation
●SOT-25
0.4
（0.95）
1.9±0.2
2.9±0.2
+0.1
-0.05
1.1±0.1
0〜0.1
0.15
0.2min
+0.1
-0.05
2.8±0.2
1.6 +0.2
-0.1
SOT-25
(TOPVIEW)
①②③④
DESIGNATOR
N
D
E
CONFIGURATION
VDET1
N-chOpendrain
N-chOpendrain
CMOS
VDET2
N-chOpendrain
CMOS
N-chOpendrain
PRODUCTNAME
XC612N****M*
XC612D****M*
XC612E****M*
q
Representstheoutputconfiguration
we
Representstheentryorder.
r
Denotestheproductionlotnumber
0to9,AtoZrepeated.(G.I.J.O.Q.Wexcepted)
02S05XC612 02.09.12 14:15 ページ171
XC612Series
172
2
■BlockDiagram
XC612N Series
XC612D Series
XC612E Series
02S05XC612 02.09.12 14:15 ページ172
XC612
Series
173
2
■AbsoluteMaximumRatings
PARAMETER
InputVoltageVIN1
InputVoltageVIN2
OutputVoltageVDET1(N-chOpendrain)
OutputVoltageVDET1(CMOS)
OutputCurrentVDET1
OutputVoltageVDET2(N-chOpendrain)
OutputVoltageVDET2(CMOS)
OutputCurrentVDET2
PowerDissipation
OperatingAmbientTemperature
StorageTemperature
SYMBOL
VIN1
VIN2
VVDET1
VVDET1
IVDET1
VVDET2
VVDET2
IVDET2
Pd
Topr
Tstg
UNITS
V
V
V
V
mA
V
V
mA
mW
℃
℃
CONDITIONS
12
12
VSS−0.3〜12
VSS−0.3〜VIN1＋0.3
50
VSS−0.3〜12
VSS−0.3〜VIN1＋0.3
50
150
−30〜＋80
−40〜＋125
Ta＝25℃
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XC612Series
174
2
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Detect Voltage
V
DET1
V
DF1
Voltage when V
DET1
changes from
H to L following a reduction of V
IN1
V
DF1
x 0.98 V
DF1
V
DF1
x 1.02 V
Detect Voltage
V
DET2
V
DF2
Voltage when V
DET2
changes from
H to L following a reduction of V
IN2
V
DF2
x 0.98
V
DF1
x 1.02
V
DF2
V
Hysteresis Range 1 V
HYS1
Voltage (V
DR1
) - V
DF1
when V
DET1
changes
from L to H following an increase of V
IN1
V
DF1
(T)
x 0.08
V
DF1
(T)
x 0.05
V
DF1
(T)
x 0.02
V
DF2
(T)
x 0.08
V
DF
2(T)
x 0.05
V
DF2
(T)
x 0.02
Hysteresis Range 2 V
HYS2
Voltage (V
DR2
) - V
DF2
when V
DET2
changes
from L to H following an increase of V
IN2
Supply Current
(Input Current V
IN1
)
I
SS
3.90
4.50
5.10
5.70
6.30
1.35
1.50
1.95
2.40
3.00
V
IN1
=1.5V
2.0V
3.0V
4.0V
5.0V
1.30
1.50
1.70
1.90
2.10
0.45
0.50
0.65
0.80
1.00
V
IN1
=1.5V
2.0V
3.0V
4.0V
5.0V
µA
Input Current V
IN2
I
IN2
µA
Operating Voltage V
IN1
V
DF
(T) = 1.5V to 6.0V 101.5 V
Output Current
*
I
VDET
N-ch
P-ch
V
DS
= 0.5V
2.2
7.7
10.1
11.5
13.0
-10.0 -2.0
0.3
3.0
5.0
6.0
7.0
V
IN1
=1.0V
V
IN1
=2.0V
V
IN1
=3.0V
V
IN1
=4.0V
V
IN1
=5.0V
V
DS
= -2.1V
V
IN1
=8.0V
(CMOS)
mA
Temperature Characteristics
*
–30
: ≤
Topr
≤
80
:
±100
-
ppm/
:
Transient Delay Time
*
(Release Voltage
→
Output Conversion)
tDLY 0.2 ms(V
DR→
V
OUT
conversion)
CIRCUIT
1
1
1V
1
2
2
-
3
-
5
∆V
DF
∆Topr
•
V
DF
1. V
DF1
(T), V
DF2
(T) : User specified detect voltage.
2. Release voltage (V
DR
) = V
DF
+V
HYS
3. Those parameters marked with an asterisk apply to both V
DET1
and V
DET2
.
4. Input Voltage : please ensure that V
IN1
> V
IN2
(Input voltage of XC612D and XC612E series : please ensure that V
IN1
≥ V
IN2
, V
IN1
< V
IN2
.)
5. V
IN1
pin serve both I
SS
and power supply pin so that V
IN2
operates V
IN1
as a power supply source. For normal operation of V
IN2
, operating voltage
higher than the minimum is needed to be applied to power supply pin V
IN1
.
6. For CMOS output products, high level output voltage which is generated when the transient response is released becomes input voltage of V
IN
.
■ElectricalCharacteristics
02S05XC612 02.09.12 14:15 ページ174
■OperatingExplanation
●Timing Chart (Pull up voltage =Input voltage VIN1)
●Operational Notes (N-ch Open drain)
TimingChartA(VIN1=voltagesabovereleasevoltage,VIN2=sweepvoltage)
Becauseavoltagehigherthantheminimumoperatingvoltageisappliedtothevoltageinputpin(VIN),groundvoltagewillbeoutputatthe
outputpin(VDET)duringstage3.(Stages1,2,4,5arethesameasinBbelow).
TimingChartB(VIN1=VIN2)
qWhenavoltagegreaterthanthereleasevoltage(VDR)isappliedtothevoltageinputpin(VIN1,VIN2),inputvoltage(VIN1,VIN2)willgradually
fall.
Whenavoltagegreaterthanthedetectvoltage(VDF)isappliedtothevoltageinputpin(VIN1,VIN2),astateofhighimpedancewillexistat
theoutputpin(VDET1,VDET2),soshouldthepinbepulledup,voltagewillbeequaltopullupvoltage.
wWheninputvoltage(VIN1,VIN2)fallsbelowdetectvoltage(VDF),outputvoltage(VDET1,VDET2)willbeequaltogroundlevel(VSS).
eShouldinputvoltage(VIN1,VIN2)fallbelowtheminimumoperationalvoltage(VMIN),outputwillbecomeunstable.ShouldVIN2 fallbelowVMIN,
voltageattheoutputpin(VDET2)willbeequaltogroundlevel(VSS)ifthepowersupply(VIN1)iswithintheoperatingvoltagerange.
*Ingeneraltheoutputpinispulledupsooutputwillbeequaltopullupvoltage.
rShould input voltage (VIN1, VIN2) rise above ground voltage (VSS), output voltage (VDET1, VDET2) will equal ground level until the release
voltagelevel(VDR)isreached.
tWheninputvoltage(VIN1,VIN2)risesabovereleasevoltage,theoutputpin's(VDET1,VDET2)voltagewillbeequaltothevoltagedependenton
pullup.
Note:Thedifferencebetweenreleasevoltage(VDR)anddetectvoltage(VDF)istheHysteresisRangey.
条件A 条件B
InputVoltage（VIN1）
ReleaseVoltage（VDR1）
DetectVoltage（VDF1）
Min.OperatingVoltage（VMIN）
GroundVoltage（VSS）
InputVoltage（VIN2）
ReleaseVoltage（VDR2）
DetectVoltage（VDF2）
Min.OperatingVoltage（VMIN）
GroundVoltage（VSS）
Min.OperatingVoltage（VMIN）
GroundVoltage（VSS）
OutputVoltage（VDET1）
OutputVoltage（VDET2）
Min.OperatingVoltage（VMIN）
GroundVoltage（VSS）
1345
A
21345
B
2
6
6
6
6
XC612
Series
175
2
02S05XC612 02.09.12 14:15 ページ175
XC612Series
176
2
XC612NSeries XC612NSeries
IN
(includesthroughcurrent)
voltagedrop
1. Voltagedetector2'sinputvoltage(VIN2)
Aninputprotectdiodeisconnectedfrominputdetector2'sinput(VIN2)toinputdetector1'sinput.Therefore,should
thevoltageappliedtoVIN2exceedVIN1,currentwillflowthroughVIN1viathediode.(refertodiagram1)
2. Oscillationasaresultofthroughcurrent
SincetheXC612seriesareCMOSICs,throughcurrentwillflowwhentheIC'sinternalcircuitswitchingoperates
(duringreleaseanddetectoperations).Consequently,oscillationisliabletooccurasaresultofdropsinvoltageat
thethroughcurrent'sresistor(RIN)duringreleasevoltageoperations.(refertodiagram2)
Sincehysteresisexistsduringdetectoperations,oscillationisunlikelytooccur.
1. PleaseusethisICwithinthespecifiedmaximumabsoluteratings.
2. PleaseensurethatinputvoltageVIN2islessthanVIN1+0.3V.(refertoN.B.1below)
3. WitharesistorconnectedbetweentheVIN1pinandtheinput,oscillationisliabletooccurasaresultofthroughcurrentat
thetimeofrelease.(refertoN.B.2below)
4. WitharesistorconnectedbetweentheVIN1pinandtheinput,detectandreleasevoltagewillriseasaresultoftheIC'ssup-
plycurrentflowingthroughtheVIN1pin.
5.InordertostabilisetheIC'soperations,pleaseensurethattheVIN1pin'sinputfrequency'sriseandfalltimesaremorethan
5µsec/V.
6.ShouldthepowersupplyvoltageVIN1exceed6V,voltagedetector2'sdetectvoltage(VDF2)andthereleasevoltage(VDR2)
willshiftsomewhat.
7.ForCMOSoutputproducts,highleveloutputvoltagewhichisgeneratedwhenthetransientresponseisreleasedbecomes
inputvoltageofVIN.
■N.B.
Diagram1.Voltagedetector2'sinputvoltageVIN2 Diagram2.Throughcurrentoscillation
VDET1
VDET2
VIN1
VIN2
RIN×ISS*
VIN1
VIN2
RIN
VSS
ISS*
●N.B.
■Directionsforuse
●Notes on Use
02S05XC612 02.09.12 14:15 ページ176
XC612
Series
177
2
■TestCircuits
Circuit 1.
VIN
VDET2
VDET1
VIN1
VSS
VIN2
V
V
R
100kΩ
＊
VDF1,VDF2
VHYS1,VHYS2
VDF1,VDF2
VHYS1,VHYS2
Circuit 2.
VIN
VDET2
VDET1
VIN1
ISS
VSS
VIN2
IIN2
AA
Circuit 3.
VIN
VIN2
VDET1
VSS
VIN1
VDET2
VDS
Ａ
IVDET
* A resistor is not needed if the product is CMOS output type.
XC612NSeries
VIN
VIN2
VDET1
VSS
VIN1
VDET2
VDS
VDS
Ａ
Ａ
IVDET
IVDET
XC612DSeries
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XC612Series
178
2
Circuit 4.
VIN
VDR
VDET
Time
Time
tDLY
VDET2
VDET1
VIN1
VSS
VIN2 100kΩ
＊
R
waveform
measurement
waveform
measurement
VIN
VIN2
VDET1
VSS
VIN1
VDET2
VDS
VDS
Ａ
Ａ
IVDET
IVDET
XC612ESeries
02S05XC612 02.09.12 14:15 ページ178
■TypicalPerformanceCharacteristics
3.4
3.5
3.6
3.7
3.8
3.9
-40 -20 0 20 40 60 80
3.0
3.1
3.2
3.3
3.4
3.5
-40 -20 0 20 40 60 80
0
1.0
2.0
3.0
4.0
5.0
6.0
0246810
25℃ Ta=80℃
-30℃
0
1.0
2.0
3.0
4.0
5.0
6.0
0246810
25℃ Ta=80℃
-30℃
Note : Unless otherwise stated, pull up resistance = 100kΩ with N-ch open drain output types.
(1) SUPPLY CURRENT vs. INPUT VOLTAGE
(2) DETECT & RELEASE VOLTAGE vs. AMBIENT TEMPERATURE
ＸＣ６１２Ｎ３６３２ ＸＣ６１２Ｎ３６３２
ＸＣ６１２Ｎ３６３２ ＸＣ６１２Ｎ３６３２
Input Voltage: VIN2 (V)
Input Current: IIN2 (µA)
Supply Current: Iss (µA)
Input Voltage: VIN1 (V)
V
DR
V
DF
Ambient Temp.: Topr (:)Ambient Temp.: Topr (:)
V
DR
V
DF
(V
IN1
＝10V)
(V
IN1
＝V
IN2
)
(VDF1＝3.6V) (VDF2＝3.2V)
0
1
2
3
4
5
012345
Topr=80℃
25℃
-30℃
0
1
2
3
4
5
012345
Topr=80℃
25℃
-30℃
ＸＣ６１２Ｎ３６３２  ＸＣ６１２Ｎ３６３２
(3) OUTPUT VOLTAGE vs. INPUT VOLTAGE
(VDF1＝3.6V) (VDF2＝3.2V)
Input Voltage: VIN2 (V)
Output Voltage: VDET2(V)
Output Voltage: VDET1 (V)
Input Voltage: VIN1 (V)
Detect, Release Voltage
: VDF1, VDR1 (V)
Detect, Release Voltage
: VDF2, VDR2 (V)
XC612
Series
179
2
02S05XC612 02.09.12 14:15 ページ179
XC612Series
180
2
0
5
10
15
20
25
30
35
40
45
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
2.5V
2.0V
1.5V
VIN=3.5V
3.0
0
100
200
300
400
500
600
700
0 0.2 0.4 0.6 0.8 1.0
0.7V
0
5
10
15
20
25
30
35
40
45
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
VDS(V)
2.5V
2.0V
1.5V
VIN=3.0V
0
100
200
300
400
500
600
700
0 0.2 0.4 0.6 0.8 1.0
0.7V
ＸＣ６１２Ｎ３６３２ＸＣ６１２Ｎ３６３２
(4) N-CH DRIVER OUTPUT CURRENT vs. VDS
ＸＣ６１２Ｎ３６３２ ＸＣ６１２Ｎ３６３２
(VDF2＝3.2V)(VDF1＝3.6V)
(VDF1＝3.6V)
VDS(V)
Output Current: IVDET1 (mA)
Output Current: IVET2 (mA)
Output Current: IVET2 (μA)
VDS(V)
VDS(V)
Output Current: IVET1 (μA)
VIN=0.8V VIN=0.8V
(VDF2＝3.2V)
0
2
4
6
8
10
12
14
16
18
20
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Topr=-30℃
80℃
25℃
0
2
4
6
8
10
12
14
16
18
20
0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Topr=-30℃
80℃
25℃
(5) N-CH DRIVER OUTPUT CURRENT vs. INPUT VOLTAGE
ＸＣ６１２Ｎ３６３２ ＸＣ６１２Ｎ３６３２
(VDF2＝3.2V)(VDF1＝3.6V)
Output Current: IVET1 (mA)
Input Voltage: VIN1 (V)
Output Current: IVDET2 (mA)
Input Voltage: VIN2 (V)
VDS=0.5V VDS=0.5V
02S05XC612 02.09.12 14:15 ページ180
XC612
Series
181
2
■TypicalApplicationCircuits
●Window comparator circuit (Example covers N-channel open drain product's circuits.)
VIN
VOUT
VDF1
VDF2
VSS Time
Time
VSS
VIN1
VOUT
VIN
RR
VSS VSS
VSS
VDET1
VIN2 VDET2
VIN1
VDD
VIN
R
R1
R2
VSS
VOUT
VSS
VSS
VDET1
VIN2 VDET2
NotesonresistorsR1andR2's(1),(2)functions:
Detectvoltage={(R1+R2)÷R2}×VDF2 (1)
N.B.VDF2=detectvoltageVD2
Pleaseset-upsothat
Hysteresis(VHYS2)={(R1+R2)÷ }×VHYS2 (2)
Note:Pleaseensurethatinputvoltage2(VIN2)islessthanVIN1+0.3V
VIN1
VDD
R
RD
D
CD
VSSVSS
VSS
VDET1
VIN2 VDET2
Note:Delayoperatesatbothtimesofrelease
anddetectoperations.
●Detect voltages above respective established voltages circuit (Example covers N-channel open drain product's circuits.)
●Voltage detect circuit with delay built-in (Example covers N-channel open drain product's circuits.)
02S05XC612 02.09.12 14:15 ページ181