VOLTAGE DETECTOR
WITH OUTPUT DELAY
RN5VD SERIES
APPLICATION MANUAL
NO.EA-027-0006
VOLTAGE DETECTOR
WITH OUTPUT DELAY
RN5VD SERIES
1
OUTLINE
The RN5VD Series are voltage detector ICs with output delay functions and high detector threshold
accuracy and ultra-low supply current by CMOS process, which can be operated at an extremely low volt-
age and is used,for instance, for system reset.
Each of these ICs consists of a voltage reference unit, a comparator, resistors for voltage detection, an
output driver, a hysteresis circuit and an output delay generator. The detector threshold is fixed with high
accuracy in the IC and requires no adjustment.
The RN5VD Series are operable by a lower voltage than that for the R×5VL Series, and can be driven
by a single battery.
Two output types, Nch open drain type and CMOS type, are available. Since the package for these ICs
are SOT-23-5(Mini-mold)package, high density mounting of the ICs on board is possible.
• Output Delay ......................................................TYP. 100ms with external capacitor : 0.15µF
• Ultra-low supply current...................................TYP. 1.0µA (RN5VD15×: VDD=3.5V)
• Broad Operating Voltage Range.......................0.7V to 10.0V
• Detector Threshold ............................................Stepwise setting with a step of 0.1V in the range of 0.9V to 6.0V is
................................................................................possible. (refer to Selection Guide) .
• High accuracy detector threshold.....................±2.5%
• Low Temperature-Drift Coefficient of Detector Threshold ...........TYP. ±100ppm/˚C
• Two Output Types..............................................Nch Open Drain and CMOS
• Small Package ....................................................SOT-23-5(Mini-mold)
FEATURES
APPLICATIONS
• CPU & Logic Circuit Reset
• Battery Checker
• Window Comparator
• Wave Shaping Circuit
• Battery Back-Up Circuit
• Power Failure Detector
RN5VD
2
BLOCK DIAGRAMS
2
3
Vref
OUT
GND
VDD
CD
RD
–
+
1
5
2
3
Vref
OUT
GND
VDD
CD
RD
–
+1
5
• Nch Open Drain Output (RN5VD××A)
• CMOS Output (RN5VD××C)
RN5VD××××–×× ←Part Number
↑↑↑ ↑
abc d
SELECTION GUIDE
The detector threshold, the output type, the packing type, and the taping type of RN5VD Series can be desig-
nating at the user's request by specifying the part number as follows :
For example, the Product with Detector Threshold 3.5V, Output Type Nch Open Drain and Taping Type TR,
is designated by Part Number RN5VD35AA-TR.
Code
aSetting Detector Threshold (–VDET) :
Stepwise setting with a step of 0.1V in the range of 0.9V to 6.0V is possible.
b
Designation of Output Type
A: Nch Open Drain
C: CMOS
c
Designation of Packing Type
A: Taping
C: Antistatic bag for samples
d
Designation of Taping Type:
Ex. SOT-23-5: TR, TL
(refer to Taping Specification)
“TR” is prescribed as a standard.
Contents
RN5VD
3
}
}
PIN DESCRIPTION
Pin No. Symbol Description
1OUT Output Pin
Input and power source for device itself
Ground Pin
No Connection
Pin for external capacitor (for setting output delay)
2 VDD
3GND
4NC
5 CD
RN5VD
4
PIN CONFIGURATION • SOT-23-5
123
54
(mark side)
ABSOLUTE MAXIMUM RATINGS
Symbol Item Rating Unit
VDD Supply Voltage 12
VOUT Output Voltage
IOUT Output Current
Power Dissipation
CNOS VSS–0.3 to VDD+0.3
Nch
70
PD150
VSS–0.3 to 12
V
V
mA
mW
Operating Temperature Range
Topt –40 to +85 ˚C
Storage Temperature RangeTstg –55 to +125 ˚C
Lead Temperature (Soldering) Tsolder 260˚C, 10s
Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any
conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above
these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress
ratings only and do not necessarily imply functional operation below these limits.
ABSOLUTE MAXIMUM RATINGS
RN5VD
5
RN5VD
6
VDD=0.8V
VDD=2.9V
∆–VDET
∆Topt
ELECTRICAL CHARACTERISTICS
• RN5VD09A/C
Topt=25˚C
Symbol Item Conditions MIN. TYP. MAX. Unit.
–VDET
VHYS
ISS
Detector Threshold
Detector Threshold Hysteresis
Supply Current
0.878 0.900 0.922 V
0.027 0.045 0.063 V
1.5
0.9
3.7
2.7
µA
VDDH Maximum Operating Voltage 10 V
VDDL Minimum Operating Voltage
(Note 1)
Topt=25˚C
–30˚C≤Topt≤85˚C
0.55
0.65
0.70
0.80
V
IOUT Output Current
Nch
Pch
VDS=0.05V, VDD=0.7V
VDS=0.5V, VDD=0.85V
VDS=–2.1V, VDD=4.5V
0.01
0.05
1.0
0.05
0.50
2.0
mA
VTCD CDpin Threshold Voltage VDD=0.99V 0.297 0.495 0.693 V
mA
RDDelay Resistance 0.5 1.0 2.0 MΩ
Detector Threshold
Temperature Coefficient –30˚C≤Topt≤85˚C ±100 ppm/˚C
ICD CDpin Sink Current
VDS=0.1V, VDD=0.7V
VDS=0.5V, VDD=0.85V
2.0
10.0
30
100.0
µA
(Note 1) Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less, provided that in the case of Nch
Open Drain Type Products, the pull-up resistance is set at 470kΩ, and the pull-up voltage is set at 5.0V.
RN5VD
7
• RN5VD18A/C
Topt=25˚C
Symbol Item Conditions MIN. TYP. MAX. Unit.
–VDET
VHYS
ISS
VDDH
Detector Threshold
Detector Threshold Hysteresis
Supply Current
Maximum Operating Voltage
VDD=1.7V
VDD=3.8V
1.755 1.800 1.845 V
0.054 0.090 0.126 V
2.5
1.0
5.0
3.0
µA
10 V
VDDL Minimum Operating Voltage
(Note 1)
Topt=25˚C
–30˚C≤Topt≤85˚C
0.55
0.65
0.70
0.80 V
IOUT Output Current
Nch
Pch VDS=–2.1V, VDD=4.5V
VDS=0.05V, VDD=0.7V
VDS=0.5V, VDD=1.5V
0.01
1.0
0.05
2.0
1.0 2.0
mA
mA
VTCD CDpin Threshold Voltage VDD=1.98V 0.693 0.990 1.287 V
ICD CDpin Sink Current
VDS=0.1V, VDD=0.7V
VDS=0.5V, VDD=1.5V
2.0
200.0
30
800.0
µA
RDDelay Resistance 0.5 1.0 2.0 MΩ
∆–VDET
∆Topt
Detector Threshold
Temperature Coefficient –30˚C≤Topt≤85˚C ±100 ppm/˚C
(Note 1) Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less, provided that in the case of Nch
Open Drain Type Products, the pull-up resistance is set at 470kΩ, and the pull-up voltage is set at 5.0V.
RN5VD
8
• RN5VD27A/C Topt=25˚C
Symbol Item Conditions MIN. TYP. MAX. Unit.
–VDET
VHYS
ISS
VDDH
Detector Threshold
Detector Threshold Hysteresis
Supply Current
Maximum Operating Voltage
VDD=2.6V
VDD=4.7V
2.633 2.700 2.767 V
0.081 0.135 0.189 V
3.5
1.1
7.0
3.3
µA
10 V
VDDL Minimum Operating Voltage
(Note 1)
Topt=25˚C
–30˚C≤Topt≤85˚C
0.55
0.65
0.70
0.80 V
IOUT Output Current
Nch
Pch VDS=–2.1V, VDD=4.5V
VDS=0.05V, VDD=0.7V
VDS=0.5V, VDD=1.5V
0.01
1.0
0.05
2.0
1.0 2.0
mA
mA
VTCD CDpin Threshold Voltage VDD=2.97V 1.188 1.485 1.782 V
ICD CDpin Sink Current
VDS=0.1V, VDD=0.7V
VDS=0.5V, VDD=1.5V
2.0
200.0
30
800.0
µA
RDDelay Resistance 0.5 1.0 2.0 MΩ
∆–VDET
∆Topt
Detector Threshold
Temperature Coefficient –30˚C≤Topt≤85˚C ±100 ppm/˚C
( Note 1) Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less, provided that in the case of Nch
Open Drain Type Products, the pull-up resistance is set at 470kΩ, and the pull-up voltage is set at 5.0V.
RN5VD
9
• RN5VD36A/C
Topt=25˚C
Symbol Item Conditions MIN. TYP. MAX. Unit.
–VDET
VHYS
Detector Threshold
Detector Threshold Hysteresis
3.510 3.600 3.690 V
0.108 0.180 0.252 V
ISS Supply Current
VDD=3.47V
VDD=5.6V
4.5
1.2
9.0
3.6
µA
VDDH Maximum Operating Voltage 10 V
VDDL Minimum Operating Voltage
(Note 1)
Topt=25˚C
–30˚C≤Topt≤85˚C
0.55
0.65
0.70
0.80 V
IOUT Output Current
Nch
Pch
VDS=0.05V, VDD=0.7V
VDS=0.5V, VDD=1.5V
VDS=–2.1V, VDD=4.5V
0.01
1.0 2.0
1.0 2.0
0.05
mA
mA
VTCD CDpin Threshold Voltage VDD=3.96V 1.584 1.980 2.376 V
ICD CDpin Sink Current
VDS=0.1V, VDD=0.7V
VDS=0.5V, VDD=1.5V
2.0
200.0
30
800.0
µA
RDDelay Resistance 0.5 1.0 2.0 MΩ
∆–VDET
∆Topt
Detector Threshold
Temperature Coefficient –30˚C≤Topt≤85˚C ±100 ppm/˚C
(Note 1) Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less, provided that in the case of Nch
Open Drain Type Products, the pull-up resistance is set at 470kΩ, and the pull-up voltage is set at 5.0V.
RN5VD
10
• RN5VD45A/C
Topt=25˚C
Symbol Item Conditions MIN. TYP. MAX. Unit.
–VDET
VHYS
Detector Threshold
Detector Threshold Hysteresis
4.388 4.500 4.612 V
0.135 0.225 0.315 V
ISS Supply Current
VDD=4.34V
VDD=6.5V
5.5
1.3
11.0
3.9
µA
VDDL Minimum Operating Voltage
(Note 1)
Topt=25˚C
–30˚C≤Topt≤85˚C
0.55
0.65
0.70
0.80 V
IOUT Output Current
VTCD CDpin Threshold Voltage
Nch
VDS=0.05V, VDD=0.7V
VDS=0.5V, VDD=1.5V
VDS=–2.1V, VDD=8.0VPch
0.01
1.0
0.05
2.0
1.5 3.0
VDD=4.95V 1.980 2.475 2.970 V
ICD CDpin Sink Current
VDS=0.1V, VDD=0.7V
VDS=0.5V, VDD=1.5V
2.0
200.0
30
800.0
µA
RDDelay Resistance 0.5 1.0 2.0 MΩ
∆–VDET
∆Topt
Detector Threshold
Temperature Coefficient –30˚C≤Topt≤85˚C ±100 ppm/˚C
mA
mA
VDDH Maximum Operating Voltage 10 V
(Note 1) Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less, provided that in the case of Nch
Open Drain Type Products, the pull-up resistance is set at 470kΩ, and the pull-up voltage is set at 5.0V.
RN5VD
11
• RN5VD54A/C
Topt=25˚C
Symbol Item Conditions MIN. TYP. MAX. Unit.
–VDET Detector Threshold 5.265 5.400 5.535
0.378
V
VHYS Detector Threshold Hysteresis 0.162 0.270 V
12.0
4.2
ISS Supply Current
VDD=5.2V
VDD=7.4V
6.0
1.4
µA
10VDDH Maximum Operating Voltage V
0.70
0.80
VDDL Minimum Operating Voltage
(Note 1)
Topt=25˚C
–30˚C≤Topt≤85˚C
0.55
0.65 V
0.05
2.0
3.564VTCD CDpin Threshold Voltage VDD=5.94V 2.376 2.970 V
2.0RDDelay Resistance 0.5 1.0 MΩ
∆–VDET
∆Topt
Detector Threshold
Temperature Coefficient –30˚C≤Topt≤85˚C ±100 ppm/˚C
ICD CDpin Sink Current
VDS=0.1V, VDD=0.7V
VDS=0.5V, VDD=1.5V
2.0
200.0
30
800.0
µA
IOUT Output Current
Nch
VDS=0.05V, VDD=0.7V
VDS=0.5V, VDD=1.5V
0.01
1.0
mA
mA3.0Pch VDS=–2.1V, VDD=8.0V 1.5
(Note 1) Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less, provided that in the case of Nch
Open Drain Type Products, the pull-up resistance is set at 470kΩ, and the pull-up voltage is set at 5.0V.
RN5VD
12
Part Number.
RN5VD09A/C
RN5VD10A/C
RN5VD11A/C
RN5VD12A/C
RN5VD13A/C
RN5VD14A/C
RN5VD15A/C
RN5VD16A/C
RN5VD17A/C
RN5VD18A/C
RN5VD19A/C
RN5VD20A/C
RN5VD21A/C
RN5VD22A/C
RN5VD23A/C
RN5VD24A/C
RN5VD25A/C
RN5VD26A/C
RN5VD27A/C
RN5VD28A/C
RN5VD29A/C
RN5VD30A/C
RN5VD31A/C
RN5VD32A/C
RN5VD33A/C
RN5VD34A/C
RN5VD35A/C
RN5VD36A/C
RN5VD37A/C
RN5VD38A/C
RN5VD39A/C
Detector Threshold
–VDET (V)
MIN
.
TYP. MAX.
0.878 0.900 0.922 0.027 0.045 0.063
0.975 1.000 1.025 0.030 0.050 0.070
1.073 1.100 1.127 0.033 0.055 0.077
1.170 1.200 1.230 0.036 0.060 0.084
1.268 1.300 1.332 0.039 0.065 0.091
1.365 1.400 1.435 0.042 0.070 0.098
1.463 1.500 1.537 0.045 0.075 0.105
1.560 1.600 1.640 0.048 0.080 0.112
1.658 1.700 1.742 0.051 0.085 0.119
1.755 1.800 1.845 0.054 0.090 0.126
1.853 1.900 1.947 0.057 0.095 0.133
1.950 2.000 2.050 0.060 0.100 0.140
2.048 2.100 2.152 0.063 0.105 0.147
2.145 2.200 2.255 0.066 0.110 0.154
2.243 2.300 2.357 0.069 0.115 0.161
2.340 2.400 2.460 0.072 0.120 0.168
2.438 2.500 2.562 0.075 0.125 0.175
2.535 2.600 2.665 0.078 0.130 0.182
2.633 2.700 2.767 0.081 0.135 0.189
2.730 2.800 2.870 0.084 0.140 0.196
2.828 2.900 2.972 0.087 0.145 0.203
2.925 3.000 3.075 0.090 0.150 0.210
3.023 3.100 3.177 0.093 0.155 0.217
3.120 3.200 3.280 0.096 0.160 0.224
3.218 3.300 3.382 0.099 0.165 0.231
3.315 3.400 3.485 0.102 0.170 0.238
3.413 3.500 3.587 0.105 0.175 0.245
3.510 3.600 3.690 0.108 0.180 0.252
3.608 3.700 3.792 0.111 0.185 0.259
3.705 3.800 3.895 0.114 0.190 0.266
3.803 3.900 3.997 0.117 0.195 0.273
V
DD
=
(–V
DET
)
–
0.10V
V
DD
=
(–V
DET
)
–0.13V
1.5
1.8
3.7
4.5
2.0 5.0
2.5 5.0
3.0 6.0
3.5 7.0
4.0 8.0
4.5 9.0
V
DD
=
(
–V
DET
)
+
2.0V
0.9 2.7
1.0 3.0
1.1 3.3
1.2 3.6
Nch
V
DS
=
0.05V
V
DD
=
0.7V
0.01 0.05
Nch
V
DS
=
0.5V
V
DD
=
0.85V 0.05 0.5
V
DD
=
1.0V 0.2 1.0
V
DD
=
1.5V 1.0 2.0
MIN
.
TYP. MAX.
condi-
tions
TYP. MAX.
condi-
tions
TYP. MAX.
condi-
tions
MIN. TYP.
conditions
MIN. TYP.
VHYS (V) Iss1(µA) Iss2(µA) IOUT1(mA) IOUT2(mA)
Hysteresis
Supply Current 1 Supply Current 2 Output Current 1 Output Current 2
ELECTRICAL CHARACTERISTICS BY DETECTOR THRESHOLD
• RN5VD09A/C to RN5VD39A/C
(Note) Refer to the previously defined “Minimum Operating Voltage”.
Condition 1 : Topt=25˚C
Condition 2 : –30˚C≤Topt≤85˚C
RN5VD
13
P
ch
V
DS
=
–
2.1V
V
DD
=
4.5V
1.0 2.0
(Note1)
Condition1
0.55
Condition2
0.65
(Note1)
Condition1
0.70
Condition2
0.80
V
DD
=
(
–V
DET
)
×
1.1V
V
DS
=
0.1V
V
DD
=
0.7V
2.0 30
V
DS
=
0.5V
V
DD
=
0.85V
V
DD
=
1.0V
V
DD
=
1.5V
10
50
200
100
200
800
0.5 1.0 2.0
Output Current 3
IOUT3 (mA)
condi-
tions
MIN. TYP. TYP. MAX.
condi-
tions
V
DD
×
0.3
V
DD
×
0.35
V
DD
×
0.4
V
DD
×
0.5
V
DD
×
0.5
V
DD
×
0.5
V
DD
×
0.7
V
DD
×
0.65
V
DD
×
0.6
MIN. TYP. MAX.
condi-
tions
MIN. TYP.
conditions
MIN. TYP. MIN. TYP. MAX.
VDDL (V) VTCD (V) ICD1(µA) ICD2(µA) RD(MΩ)
Minimum Oper-
ating Voltage C
D
Pin Threshold Voltage
C
D
Pin Output
Current 1 C
D
Pin Output Current 2 Delay
Resistance
–
30˚C≤
Topt
≤85˚C
±100
condi-
tions
TYP.
∆–V
DET
∆Topt (ppm/˚C)
Detector
Threshold
Tempco.
Topt=25˚C
RN5VD
14
Part Number.
RN5VD40A/C
RN5VD41A/C
RN5VD42A/C
RN5VD43A/C
RN5VD44A/C
RN5VD45A/C
RN5VD46A/C
RN5VD47A/C
RN5VD48A/C
RN5VD49A/C
RN5VD50A/C
RN5VD51A/C
RN5VD52A/C
RN5VD53A/C
RN5VD54A/C
RN5VD55A/C
RN5VD56A/C
RN5VD57A/C
RN5VD58A/C
RN5VD59A/C
RN5VD60A/C
Detector Threshold
–VDET (V)
MIN. TYP. MAX. MIN. TYP. MAX.
condi-
tions
TYP. MAX.
condi-
tions
TYP. MAX.
condi-
tions
MIN. TYP. MIN. TYP.
3.900 4.000 4.100 0.120 0.200 0.280
3.998 4.100 4.202 0.123 0.205 0.287
4.095 4.200 4.305 0.126 0.210 0.294
4.193 4.300 4.407 0.129 0.215 0.301
4.290 4.400 4.510 0.132 0.220 0.308
4.388 4.500 4.612 0.135 0.225 0.315
4.485 4.600 4.715 0.138 0.230 0.322
4.583 4.700 4.817 0.141 0.235 0.329
4.680 4.800 4.920 0.144 0.240 0.336
4.778 4.900 5.022 0.147 0.245 0.343
4.875 5.000 5.125 0.150 0.250 0.350
4.973 5.100 5.227 0.153 0.255 0.357
5.070 5.200 5.330 0.156 0.260 0.364
5.168 5.300 5.432 0.159 0.265 0.371
5.265 5.400 5.535 0.162 0.270 0.378
5.363 5.500 5.637 0.165 0.275 0.385
5.460 5.600 5.740 0.168 0.280 0.392
5.558 5.700 5.842 0.171 0.285 0.399
5.655 5.800 5.945 0.174 0.290 0.406
5.753 5.900 6.047 0.177 0.295 0.413
5.850 6.000 6.150 0.180 0.300 0.420
V
DD
=
(–V
DET
)
–
0.16V
V
DD
=
(–V
DET
)
–
0.20V
5.0 10.0
5.5 11.0
6.0 12.0
6.5 13.0
V
DD
=
(–V
DET
)
+
2.0V
1.3 3.9
1.4 4.2
N
ch
V
DS
=
0.05V
V
DD
=
0.7V
0.01 0.05
N
ch
V
DS
=
0.5V
V
DD
=
1.5V 1.0 2.0
conditions
VHYS (V) Iss1(µA) Iss2(µA) IOUT1(mA) IOUT2(mA)
Hysteresis
Supply Current 1 Supply Current 2 Output Current 1
Output Current 2
• RN5VD40A/C to RN5VD60A/C
(Note) Refer to the previously defined “Minimum Operating Voltage”.
Condition 1 : Topt=25˚C
Condition 2 : –30˚C≤Topt≤85˚C
RN5VD
15
P
ch
V
DS
=
–
2.1V
V
DD
=
8.0V
1.5 3.0
(Note1)
Condition1
0.55
Condition2
0.65
(Note1)
Condition1
0.70
Condition2
0.80
V
DD
=
(–V
DET
)
×
1.1V
V
DS
=
0.1V
V
DD
=
0.7V
2.0 30
V
DS
=
0.5V
V
DD
=
1.5V
200 800 0.5 1.0 2.0
Output Current 3
IOUT3(mA)
condi-
tions
MIN. TYP.
TYP.
MAX.
condi-
tions
V
DD
×
0.4
V
DD
×
0.5
V
DD
×
0.6V
MIN. TYP. MAX.
condi-
tions
MIN. TYP.
conditions
MIN. TYP.
condi-
tions
TYP. MAX.
VDDL (V) VTCD (V) ICD1(µA) IOUT1(mA) IOUT2(mA)
Minimum Oper-
ating Voltage C
D
Pin Threshold Voltage
C
D
Pin Output
Current 1 C
D
Pin Output Current 2 Delay
Resistance
–30˚C≤
Topt
≤85˚C
±100
condi-
tions
TYP.
Detector
Threshold
Tempco.
Topt=25˚C
∆–V
DET
∆Topt (ppm/˚C)
RN5VD
16
AB
1 2 3 4 5
Detector Threshold Hysteresis
Released Voltage +VDET
Detected Voltage –VDET
Minimum Operaing Voltage
Delay Time
GND
GND
Supply Voltage
(VDD)
Output Voltage
(OUT)
OPERATION
FIG. 2 Operation Diagram
FIG. 1 Block Diagram
Step 1. Output Voltage is equal to Pull-up Voltage.
Step 2. When Input Voltage(VDD) reaches the state of Vref≥VDD · (Rb+Rc) /(Ra+Rb+Rc) at Point A (Detected Voltage –VDET) , the output of Comparator is
reversed, so that Output Voltage becomes GND. Discharging is performed from CDpin connected to External Capacitor. No delay time is generated.
Step3. Output Voltage becomes indefinite when Power Source Voltage(VDD) is smaller than Minimum Operating Voltage. When the output is pulled up, VDD is
output.
Step 4. Output Voltage becomes equal to GND.
Step 5. When Input Voltage(VDD) reaches the state of Vref≤VDD · Rb/(Ra+Rb) at Point B (Released Voltage +VDET) , the output of Comparator is reversed,
and the External Capacitor is charged through CDpin, so that Output Voltage becomes equal to Pulled-up Voltage after a delay time tD(=0.69×106×CD) .
Step Step 1 Step 2 Step 3 Step 4 Step 5
Comparator (–) Pin
Input Voltage
III II II I
Comparator Output
LH
Indefinite
HL
Tr. 1, 2 OFF ON
Indefinite
ON OFF
Output Tr.
Nch OFF ON
Indefinite
ON OFF
Pch ON OFF
Indefinite
OFF ON
I. Rb + Rc
Ra + Rb + Rc · VDD
II. Rb
Ra + Rb · VDD
GND
OUT
CD
VDD
Ra
Current Source
Output Capacitor
RD
Rb
Rc
Tr.1 Tr.2
Vref
–
+
Comparator
Schmitt Trigger
Nch
Pch
RN5VD
17
• Output Delay Operation
When the Supply Voltage crosses the Released Voltage (+VDET) from a low value to a value higher
than the Released Voltage (+VDET) , the CDpin Voltage starts to increase (starts to charge the external
capacitor).
The Output Voltage is maintained at
“
L
”
level until the CDpin Voltage reaches to VTCD (CDpin Threshold
Voltage) after that the Output Voltage is reversed to
“
H
”
state.
The time period from beginning of charging capacitor to Output Voltage reversing represents the
Output Delay (tD) .
Supply Voltage
(VDD)
CD pin Voltage
Output Voltage
(OUT)
Output Delay Time (tD)
GND
CD pin Threshold Voltage (VTCD)
Released Voltage (+VDET)
GND
Delay time (tD) can be set accordance with the capacitance CDof external capacitor as below
tD=0.69×10 6×CD(s)
• Output Delay Time
RN5VD
18
TEST CIRCUITS
FIG. 3 Supply Current test Circuit FIG. 4 Detector Threshold Test Circuit
FIG. 5 Nch Driver Output Current Test Circuit FIG. 6 Pch Driver Output Current Test Circuit
FIG. 7 CDpin Threshold Voltage Test Circuit FIG. 8 CDpin Sink Current Test Circuit
FIG. 9 Output Delay Time Test Circuit
VIN
ISS
VDD
GND
RN5VD
SERIES
VIN VDD
+5V or VDD
GND
OUT
470kΩ
RN5VD
SERIES
VIN VDD
GND
OUT
RN5VD
SERIES VDS
IOUT
VIN VDD
GND
OUT
RN5VD
××
C
SERIES
VDD+VDS
IOUT
VIN VDD
CD
VDS
+5V or VDD
GND
OUT OUT
470kΩ
RN5VD
SERIES
VIN VDD
CD
VDS GND
RN5VD
SERIES
ICD
tPHL tD
+VDET+2.0V
100%
50%
GND
0.7V
GND
Input Voltage
Output Voltage
CD
CD
VDD
+5V
GND
OUT
470kΩ
RN5VD
SERIES
VIN
*) at FIG.4,7,9. CMOS Output Type does not
need a pull-up resistor.
RN5VD
19
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
0246810
0
0.5
1.0
1.5
2.0
2.5
3.0
Supply Current Iss(µA)
RN5VD09×
Input Voltage VIN(V)
Topt=80˚C
25˚C
–30˚C
0
1
2
3
4
5
0246810
Supply Current Iss(µA)
Input Voltage VIN(V)
RN5VD27×
Topt=80˚C
25˚C
–30˚C
0
3
4
5
6
7
8
Supply Current Iss(µA)
0246810
Input Voltage VIN(V)
RN5VD45×
Topt=80˚C
25˚C
–30˚C
2
1
2) Detector Threshold vs. Temperature
–40 –20 0 20 40 60 80
0.86
0.88
0.90
0.92
0.94
0.96
0.98
Detector Threshold VDET(V)
RN5VD09×
Temperature Topt(˚C)
+VDET
–VDET
2.60
2.65
2.70
2.75
2.80
2.85
2.90
Detector Threshold VDET(V)
RN5VD27×
–40 –20 0 20 40 60 80
Temperature Topt(˚C)
–VDET
+VDET
RN5VD
20
3) Output Voltage vs. Input Voltage
0 0.2 0.4 0.6 0.8 1
0
0.2
0.4
0.6
0.8
1.0
Output Voltage VOUT(V)
RN5VD09A
Input Voltage VIN(V)
25˚C
–30˚C
Topt=80˚C
VDD Pull-up
470kΩ
0 0.2 0.4 0.6 0.8 1.0
0
1
2
3
4
5
6
Output Voltage VOUT(V)
RN5VD09A
Input Voltage VIN(V)
Topt=80˚C
25˚C
–30˚C
5V Pull-up
470kΩ
0 0.5 1.0 1.5 2.0 2.5 3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
Output Voltage VOUT(V)
RN5VD27A
Input Voltage VIN(V)
Topt= –30˚C
25˚C
80˚C
VDD Pull-up
470kΩ
0 0.5 1.0 1.5 2.0 2.5 3.0
0
1
2
3
4
5
6
Output Voltage VOUT(V)
RN5VD27A
Input Voltage VIN(V)
25˚C
Topt=–30˚C
80˚C
5V Pull-up
470kΩ
–40 –20 0 20 40 60 80
4.4
4.5
4.6
4.7
4.8
4.9
Detector Threshold VDET(V)
RN5VD45×
Temperature Topt(˚C)
+VDET
–VDET
RN5VD
21
012345
0
1
2
3
4
5
Output Voltage VOUT(V)
RN5VD45A
Input Voltage VIN(V)
Topt=–30˚C
25˚C
80˚C
VDD Pull-up
470kΩ
0
1
2
3
4
6
5
Output Voltage VOUT(V)
RN5VD45A
012345
Input Voltage VIN(V)
Topt=–30˚C
25˚C
80˚C
5V Pull-up
470kΩ
4) Nch Driver Output Current vs. VDS
0 0.2 0.4 0.6 0.8 1.0
0
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
0.45
Output Currert IOUT(mA)
RN5VD09×
VDS(V)
VDD=0.85V
0.7V
0
5
10
15
20
25
30
35
40
Output Currert IOUT(mA)
01234
RN5VD45×
VDS(V)
1.5V
2.0V
2.5V
3.0V
3.5V
VDD=4.0V
RN5VD27×
0 0.5 1.0 1.5 2.0 2.5
VDS(V)
0
2
4
6
8
10
12
14
16
Output Currert IOUT(mA)
VDD=2.5V
2.0V
1.5V
RN5VD
22
5) Nch Driver Output Current vs. Input Voltage
0 0.2 0.4 0.6 0.8 1.0
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
Output Current IOUT(mA)
RN5VD09×
Input Voltage VIN(V)
VDS=0.5V
Topt = 80˚C
25˚C
–30˚C
Output Current IOUT(mA)
Input Voltage VIN(V)
0 0.5 1.0 1.5 2.0 2.5 3.0
0
2
4
6
8
10
12 RN5VD27×VDS=0.5V
Topt = –30˚C 25˚C
80˚C
6) Pch Driver Output Current vs. Input Voltage
0246810
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Output Current IOUT(mA)
RN5VD09C
Input Voltage VIN(V)
–0.5V
–1.0V
–1.5V
VDS = –2.1V
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Output Current IOUT(mA)
0246810
RN5VD27C
Input Voltage VIN(V)
VDS = –2.1V
–1.5V
–1.0V
–0.5V
RN5VD
23
0246810
0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
Output Current IOUT(mA)
RN5VD45C
Input Voltage VIN(V)
–0.5V
–1.5V
VDS =–2.1V
–1.0V
7) CDpin Threshold Voltage vs. Temperature
–40 –20 0 20 40 60 80
0.2
0.3
0.4
0.5
0.6
0.7
0.8
CD pin Threshold Voltage VTCD(V)
RN5VD09×
Temperature Topt(˚C)
VDD=0.99V
–40 –20 0 20 40 60 80
1.2
1.3
1.4
1.5
1.6
1.7
1.8
CD pin Threshold Voltage VTCD(V)
RN5VD27×
Temperature Topt(˚C)
VDD=2.97V
–40 –20 0 20 40 60 80
2.2
2.3
2.4
2.5
2.6
2.7
2.8
CD pin Threshold Voltage VTCD(V)
RN5VD45×
Temperature Topt(˚C)
VDD=4.95V
RN5VD
24
9) Cd pin Sink Current vs. Cd pin Voltage
0 0.2 0.4 0.6 0.8 1.0
0
0.02
0.04
0.06
0.08
0.10
0.12
CD pin Sink Current ICD(mA)
RN5VD09×
CD pin Voltage VCD(V)
0.7V
VDD = 0.85V
0 0.5 1.0 1.5 2.0 2.5
0
1.5
1.0
0.5
2.0
2.5
3.0
3.5
4.0
CD pin Sink Current ICD(mA)
RN5VD27×
CD pin Voltage VDS(V)
2.0V
1.5V
VDD = 2.5V
8) Cd pin Sink Current vs. Input Voltage
0 0.2 0.4 0.6 0.8 1.0
0
0.02
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
CD pin Sink Current ICD(mA)
RN5VD09×
Input Voltage VIN(V)
25˚C
Topt = 80˚C
–30˚C
VDS=0.5V
012345
0
1
2
3
4
5
CD pin Sink Current ICD(mA)
RN5VD45×
Input Voltage VIN(V)
Topt =–30˚C 25˚C
80˚C
VDS=0.5V
0 0.5 1.0 1.5 2.0 2.5 3.0
0
0.5
1.0
1.5
2.0
2.5
3.0
CD pin Sink Current ICD(mA)
RN5VD27×
Input Voltage VIN(V)
Topt =–30˚C
25˚C
80˚C
VDS=0.5V
RN5VD
25
01234
0
2
4
6
8
10
CD pin Sink Current ICD(mA)
RN5VD45×
CD pin Voltage VDS(V)
VDD = 4.0V
3.5V
3.0V
2.5V
2.0V
1.5V
10) Output delay Time vs. External Capacitance
11) Delay Resistance vs. Temperature
0.0001 0.001 0.01 0.1 1
0.01
0.1
1
10
100
1000
Output Delay Time tP(ms)
RN5VD09A
External Capacitance CD(µF)
tD
tPHL
0.0001 0.001 0.01 0.1 1
0.01
0.1
1
10
100
1000
Output Delay Time tP(ms)
RN5VD27A
External Capacitance CD(µF)
tD
tPHL
0.0001 0.001 0.01 0.1 1
0.01
0.1
1
10
100
1000
Output Delay Time tP(ms)
RN5VD45A
External Capacitance CD(µF)
tD
tPHL
–40 –20 0 20 40 60 80
0.4
0.6
0.8
1.0
1.2
1.4
1.6
Delay Resistance RD(MΩ)
RN5VD×××
Temperature Topt(˚C)
RN5VD
26
TYPICAL APPLICATIONS
• RN5VD××A CPU Reset Circuit (Nch Open Drain Output)
• RN5VD××C CPU Reset Circuit (CMOS Output)
• Memory Back-up Circuit
(1) Input Voltage to RN5VD××A is
the same as the input voltage to CPU. (2) Input Voltage to RN5VD××A is
different from the input voltage to CPU.
R
VDD
GND
OUT
CD
CD
RN5VD
××
A
SERIES
VDD
VDD
CPU
RESET
GND
VDD
VDD1 VDD2
GND
OUT
R
RN5VD
××
A
SERIES
VDD
CPU
RESET
GND
CD
CD
VDD
VDD
OUT
GND
RN5VD
××
C
SERIES
VDD
CPU
RESET
GND
CD
CD
OUT
D2
D1
A
B
G
Y1
Y2
Y3
Y4
VCC
RAM1
GND CS
VCC
RAM2
GND CS
VCC
RAM3
GND CS
VCC
RAM4
GND CS
GND
VDD
VDD
GND
VCC
RN5VD
××
C
SERIES
CD
CD
RN5VD
27
1. When RN5VD××C (CMOS Output) is used in FIG.10,this IC may oscillate by the through-type current at the detec-
tion when impedance is connected between Power Source VDD and RN5VD VDD Pin.When RN5VD××A (Nch Open
Drain Output) is used in FIG.10, and R becomes excessively large, Detector Threshold may be varied because of the
voltage drop of the supply current in the IC itself.
2. The connection as shown in FIG. 11 may cause the oscillation in both RN5VD××C (CMOS Output) and RN5VD××A
(Nch Open Drain Output)
APPLICATION HINTS
SERIES
VDD
VDD
OUTCD
GND
RN5VD
FIG.10
SERIES
RN5VD
VDD
VDD
GND
OUT R2
R1
CD
FIG.11
• Manual Reset Circuit
VDD R
VDD VDD
CD
GND
OUT
CD
VDD
RN5VD
××
C
SERIES
VDD
CD
GND
OUT
CD
RN5VD
××
A
SERIES