ELECTRONIC DEVICES DIVISION
LOW VOLTAGE DETECTOR
RN5VS SERIES
APPLICATION MANUAL
NO.EA-037-9701
NOTICE
1. The products and the product specifications described in this application manual are subject to change or dis-
continuation of production without notice for reasons such as improvement. Therefore, before deciding to use
the products, please refer to Ricoh sales representatives for the latest information thereon.
2. This application manual may not be copied or otherwise reproduced in whole or in part without prior written con-
sent of Ricoh.
3. Please be sure to take any necessary formalities under relevant laws or regulations before exporting or other-
wise taking out of your country the products or the technical information described herein.
4. The technical information described in this application manual shows typical characteristics of and example
application circuits for the products. The release of such information is not to be construed as a warranty of or a
grant of license under Ricoh's or any third party's intellectual property rights or any other rights.
5. The products listed in this document are intended and designed for use as general electronic components in
standard applications (office equipment, computer equipment, measuring instruments, consumer electronic
products, amusement equipment etc.). Those customers intending to use a product in an application requiring
extreme quality and reliability, for example, in a highly specific application where the failure or misoperation of
the product could result in human injury or death (aircraft, spacevehicle, nuclear reactor control system, traffic
control system, automotive and transportation equipment, combustion equipment, safety devices, life support
system etc.) should first contact us.
6. We are making our continuous effort to improve the quality and reliability of our products, but semiconductor
products are likely to fail with certain probability. In order prevent any injury to persons or damages to property
resulting from such failure, customers should be careful enough to incorporate safety measures in their design,
such as redundancy feature, fire-containment feature and fail-safe feature. We do not assume any liability or
responsibility for any loss or damage arising from misuse or inappropriate use of the products.
7. Anti-radiation design is not implemented in the products described in this application manual.
8. Please contact Ricoh sales representatives should you have any questions or comments concerning the prod-
ucts or the technical information.
June 1995
OUTLINE
......................................................................................................
1
FEATURES
....................................................................................................
1
APPLICATIONS
.............................................................................................
1
BLOCK DIAGRAMS
.......................................................................................
2
TIME CHART
.................................................................................................
2
DEFINITION OF OUTPUT DELAY TIME tplh
....................................................
2
SELECTION GUIDE
.......................................................................................
4
PIN CONFIGURATION
...................................................................................
5
PIN DESCRIPTION
........................................................................................
5
ABSOLUTE MAXIMUM RATINGS
...................................................................
6
ELECTRICAL CHARACTERISTICS
.................................................................
7
ELECTRICAL CHARACTERITICS BY DETECTOR THRESHOLD
....................
10
OPERATION
................................................................................................
14
TEST CIRCUITS
...........................................................................................
15
TYPICAL CHARACTERISTICS
......................................................................
16
1) Supply Current vs. Input Voltage
...........................................................................
16
2) Detector Threshold vs. Temperature
.......................................................................
16
3) Output Voltage vs. Input Voltage
...........................................................................
17
4) Nch Driver Output Current vs. V
DS
.........................................................................
18
5) Nch Driver Output Current vs. Input Voltage
................................................................
19
6) Pch Driver Output Current vs. Input Voltage
................................................................
20
7) Output Delay Time vs. Load Capacitance
..................................................................
20
8) Output Delay Time vs. Input Pin Capacitance
..............................................................
21
TYPICAL APPLICATIONS
............................................................................
22
RN5VS
A CPU Reset Circuit(Nch Open Drain Output)
....................................................
22
RN5VS
C CPU Reset Circuit(CMOS Output)
.............................................................
22
RN5VS
A Output delay Time Circuit 1
.....................................................................
22
RN5VS
A Output delay Time Circuit 2
.....................................................................
22
Memory Back-up Circuit
.....................................................................................
22
Voltage Level Indicator Circuit (lighted when the power runs out)
............................................
23
Detector Threshold Changing Circuit
........................................................................
23
Window Comparator Circuit
.................................................................................
23
Excessive Charge Preventing Circuit
........................................................................
23
RN5VS SERIES
APPLICATION MANUAL
CONTENTS
PACKAGE DIMENSIONS
..............................................................................
25
TAPING SPECIFICATIONS
...........................................................................
25
LOW VOLTAGE DETECTOR
R N5VS SERIES
OUTLINE
The RN5VS Series are voltage detector ICs with high detector threshold accuracy and ultra-low supply current
by CMOS process, which can be operated at an extremely low voltage 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 and a hysteresis circuit. The detector threshold is fixed with high accuracy.
The RN5VS Series are operable by a lower voltage than that for the R
5VL Series, and can be driven by a sin-
gle 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.
Ultra-low Supply Current ............................TYP. 0.8A (V
DD
=1.5V)
Broad Operating Voltage Range .................. 0.7V to 10.0V (Topt =25C)
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..............3.0%
Low Temperature-Drift Coefficien of Detector Threshold..............TYP. 100ppm/C
Two Output Types.........................................Nch Open Drain and CMOS
Packages.........................................................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
RN5VS
BLOCK DIAGRAMS
Nch Open Drain Output (RN5VS
A)
CMOS Output (RN5VS
C)
TIME CHART
DEFINITION OF OUTPUT DELAY TIME tplh
2
3
Vref
OUT
GND
V
DD
+
1
V
DD
2
1
3
Vref
OUT
GND
+
Detector Threshold Hysteresis
t
PLH
Released Voltage +V
DET
Detected Voltage V
DET
Supply Voltage
(V
DD
)
Output Voltage
(OUT)
Minimum Operating Voltage
GND
GND
t
PLH
t
PHL
Input Voltage
(V
DD
)
Output Voltage
Nch Open Drain Output
GND
GND
2.5V
5.0V
0.7V
+V
DET
+ 2.0V
t
PLH
t
PHL
CMOS Output
GND
GND
0.7V
+V
DET
+ 2.0V
+V
DET
+2.0V
+V
DET
+ 2.0V
2
Input Voltage
(V
DD
)
Output Voltage
RN5VS
Output Delay Time
t
PLH
is defined as follows:
1. In the case of Nch Open Drain Output:
When the time at which a pulse voltage which increases from 0.7V to +V
DET
+2.0V is applied to V
DD
is Time A, and
the time at which the output voltage reaches 2.5V under the conditions that the output pin (OUT) is pulled up
to 5V by a resistor of 470k
is Time B, the time period from Time A through Time B.
2. In the case of CMOS Output:
When the time at which a pulse voltage which increases from 0.7V to +V
DET
+2.0V is applied to V
DD
is Time A, and
the time at which the output voltage reaches the voltage of (+V
DET
+2.0V)/2 is Time B, the time period from
Time A through Time B.
RN5VS
RN5VS
Part Number
a b c d
}
SELECTION GUIDE
The detector threshold, the output type, the packing type, and the taping type of RN5VS 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 RN5VS35AA-TR.
Code
Contents
a
Setting Detector Threshold (V
DET
):
Stepwise setting with a step of 0.1V in the range of 0.9V to 6.0V is possible.
Designation of Output Type:
b
A: Nch Open Drain
C: CMOS
Designation of Packing Type:
c
A: Taping
C: Antistatic bag for samples
Designation of Taping Type:
d
Ex. TR, TL
(refer to Taping Specifications, the standard direction is TR.)
RN5VS
PIN CONFIGURATION
SOT-23-5
PIN DESCRIPTION
SOT-23-5
Pin No.
Symbol
1
OUT
2
V
DD
3
GND
4
NC
5
NC
1
2
3
(mark side)
5
4
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.
RN5VS
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
V
DD
Supply Voltage
V
OUT
Output Voltage
I
OUT
Output Current
P
D
Power Dissipation
Topt
Operating Temperature Range
Tstg
Storage Temperature Range
Tsolder
Lead Temperature (Soldering)
Rating
Unit
+12
V
CMOS
V
SS
0.3 to V
DD
+0.3
V
Nch
V
SS
0.3 to +12
70
mA
150
mW
40 to +85
C
55 to +125
C
260C,10s
Topt=25C
ABSOLUTE MAXIMUM RATINGS
RN5VS
RN5VS18A/C
Topt=25C
ELECTRICAL CHARACTERISTICS
RN5VS09A/C
Symbol
Item
V
DET
Detector Threshold
V
HYS
Detector Threshold Hysteresis
I
SS
Supply Current
V
DDH
Maximum Operating Voltage
V
DDL
Minimum Operating Voltage
I
OUT
Output Current
t
PLH
Output Delay Time
V
DET
Detector Threshold
Topt
Temperature Coefficient
Conditions MIN.
TYP.
MAX.
Unit
Note
0.873
0.900
0.927
V
0.018
0.045
0.072
V
V
DD
=0.80V
0.8
2.4
V
DD
=2.90V
0.9
2.7
A
10
V
Topt=25C
0.55
0.70
V
Note 1
40C
Topt
85C
0.65
0.80
Nch
V
DS
=0.05V,V
DD
=0.70V
0.01
0.05
mA
V
DS
=0.50V,V
DD
=0.85V
0.05
0.50
Pch
V
DS
=2.1V,V
DD
=4.5V
1.0
2.0
mA
100
s
Note 2
40C
Topt
85C
100
ppm/C
Topt=25C
Symbol
Item
V
DET
Detector Threshold
V
HYS
Detector Threshold Hysteresis
I
SS
Supply Current
V
DDH
Maximum Operating Voltage
V
DDL
Minimum Operating Voltage
I
OUT
Output Current
t
PLH
Output Delay Time
V
DET
Detector Threshold
Topt
Temperature Coefficient
Conditions MIN.
TYP.
MAX.
Unit
Note
1.746
1.800
1.854
V
0.036
0.090
0.144
V
V
DD
=1.70V
0.8
2.4
V
DD
=3.80V
1.0
3.0
A
10
V
Topt=25C
0.55
0.70
V
Note 1
40C
Topt
85C
0.65
0.80
Nch
V
DS
=0.05V,V
DD
=0.70V
0.01
0.05
mA
V
DS
=0.50V,V
DD
=1.50V
1.00
2.00
Pch V
DS
=2.1V,V
DD
=4.5V
1.0
2.0
mA
100
s
Note 2
40C
Topt
85C
100
ppm/C
RN5VS
RN5VS36A/C
Topt=25C
RN5VS27A/C
Topt=25C
Symbol
Item
V
DET
Detector Threshold
V
HYS
Detector Threshold Hysteresis
I
SS
Supply Current
V
DDH
Maximum Operating Voltage
V
DDL
Minimum Operating Voltage
I
OUT
Output Current
t
PLH
Output Delay Time
V
DET
Detector Threshold
Topt
Temperature Coefficient
Conditions MIN.
TYP.
MAX.
Unit
Note
2.619
2.700
2.781
V
0.054
0.135
0.216
V
V
DD
=2.60V
0.9
2.7
V
DD
=4.70V
1.1
3.3
A
10
V
Topt=25C
0.55
0.70
V
Note 1
40C
Topt
85C
0.65
0.80
Nch
V
DS
=0.05V,V
DD
=0.70V
0.01
0.05
mA
V
DS
=0.50V,V
DD
=1.50V
1.00
2.00
Pch V
DS
=2.1V,V
DD
=4.5V
1.0
2.0
mA
100
s
Note 2
40C
Topt
85C
100
ppm/C
Symbol
Item
V
DET
Detector Threshold
V
HYS
Detector Threshold Hysteresis
I
SS
Supply Current
V
DDH
Maximum Operating Voltage
V
DDL
Minimum Operating Voltage
I
OUT
Output Current
t
PLH
Output Delay Time
V
DET
Detector Threshold
Topt
Temperature Coefficient
Conditions MIN.
TYP.
MAX.
Unit
Note
3.492
3.600
3.708
V
0.072
0.180
0.288
V
V
DD
=3.47V
1.0
3.0
V
DD
=5.60V
1.2
3.6
A
10
V
Topt=25C
0.55
0.70
V
Note 1
40C
Topt
85C
0.65
0.80
Nch
V
DS
=0.05V,V
DD
=0.70V
0.01
0.05
mA
V
DS
=0.50V,V
DD
=1.50V
1.00
2.00
Pch V
DS
=2.1V,V
DD
=4.5V
1.0
2.0
mA
100
s
Note 2
40C
Topt
85C
100
ppm/C
RN5VS
RN5VS54A/C
Topt=25C
(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 470k
, and the pull-up voltage is set at 5.0V.
(Note 2) Refer to the previously defined "Output Delay Time
t
PLH
".
RN5VS45A/C
Topt=25C
Symbol
Item
V
DET
Detector Threshold
V
HYS
Detector Threshold Hysteresis
I
SS
Supply Current
V
DDH
Maximum Operating Voltage
V
DDL
Minimum Operating Voltage
I
OUT
Output Current
t
PLH
Output Delay Time
V
DET
Detector Threshold
Topt
Temperature Coefficient
Conditions MIN.
TYP.
MAX.
Unit
Note
4.365
4.500
4.635
V
0.090
0.225
0.360
V
V
DD
=4.34V
1.1
3.3
V
DD
=6.50V
1.3
3.9
A
10
V
Topt=25C
0.55
0.70
V
Note 1
40C
Topt
85C
0.65
0.80
Nch
V
DS
=0.05V,V
DD
=0.70V
0.01
0.05
mA
V
DS
=0.50V,V
DD
=1.50V
1.00
2.00
Pch V
DS
=2.1V,V
DD
=8.0V
1.5
3.0
mA
100
s
Note 2
40C
Topt
85C
100
ppm/C
Symbol
Item
V
DET
Detector Threshold
V
HYS
Detector Threshold Hysteresis
I
SS
Supply Current
V
DDH
Maximum Operating Voltage
V
DDL
Minimum Operating Voltage
I
OUT
Output Current
t
PLH
Output Delay Time
V
DET
Detector Threshold
Topt
Temperature Coefficient
Conditions MIN.
TYP.
MAX.
Unit
Note
5.238
5.400
5.562
V
0.108
0.270
0.432
V
V
DD
=5.20V
1.2
3.6
V
DD
=7.40V
1.4
4.2
A
10
V
Topt=25C
0.55
0.70
V
Note 1
40C
Topt
85C
0.65
0.80
Nch
V
DS
=0.05V,V
DD
=0.70V
0.01
0.05
mA
V
DS
=0.50V,V
DD
=1.50V
1.00
2.00
Pch V
DS
=2.1V,V
DD
=8.0V
1.5
3.0
mA
100
s
Note 2
40C
Topt
85C
100
ppm/C
RN5VS
Supply Current 1
Supply Current 2
Iss(A)
Iss(A)
Conditions
TYP.
MAX.
Conditions
TYP.
MAX.
0.9
2.7
0.8
2.4
1.0
3.0
V
DD
=
(V
DET
)
0.10V
V
DD
=
0.9
2.7
(V
DET
)
1.1
3.3
+2.0V
V
DD
=
(V
DET
)
1.0
3.0
1.2
3.6
0.13V
RN5VS09A/C to RN5VS39A/C
Detector Threshold
Detector Threshold
Part Number
Vdet(V)
Vhys(V)
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
RN5VS09A/C 0.873
0.900
0.927
0.018
0.045
0.072
RN5VS10A/C 0.970
1.000
1.030
0.020
0.050
0.080
RN5VS11A/C 1.067
1.100
1.133
0.022
0.055
0.088
RN5VS12A/C 1.164
1.200
1.236
0.024
0.060
0.096
RN5VS13A/C 1.261
1.300
1.339
0.026
0.065
0.104
RN5VS14A/C 1.358
1.400
1.442
0.028
0.070
0.112
RN5VS15A/C 1.455
1.500
1.545
0.030
0.075
0.120
RN5VS16A/C 1.552
1.600
1.648
0.032
0.080
0.128
RN5VS17A/C 1.649
1.700
1.751
0.034
0.085
0.136
RN5VS18A/C 1.746
1.800
1.854
0.036
0.090
0.144
RN5VS19A/C 1.843
1.900
1.957
0.038
0.095
0.152
RN5VS20A/C 1.940
2.000
2.060
0.040
0.100
0.160
RN5VS21A/C 2.037
2.100
2.163
0.042
0.105
0.168
RN5VS22A/C 2.134
2.200
2.266
0.044
0.110
0.176
RN5VS23A/C 2.231
2.300
2.369
0.046
0.115
0.184
RN5VS24A/C 2.328
2.400
2.472
0.048
0.120
0.192
RN5VS25A/C 2.425
2.500
2.575
0.050
0.125
0.200
RN5VS26A/C 2.522
2.600
2.678
0.052
0.130
0.208
RN5VS27A/C 2.619
2.700
2.781
0.054
0.135
0.216
RN5VS28A/C 2.716
2.800
2.884
0.056
0.140
0.224
RN5VS29A/C 2.813
2.900
2.987
0.058
0.145
0.232
RN5VS30A/C 2.910
3.000
3.090
0.060
0.150
0.240
RN5VS31A/C 3.007
3.100
3.193
0.062
0.155
0.248
RN5VS32A/C 3.104
3.200
3.296
0.064
0.160
0.256
RN5VS33A/C 3.201
3.300
3.399
0.066
0.165
0.264
RN5VS34A/C 3.298
3.400
3.502
0.068
0.170
0.272
RN5VS35A/C 3.395
3.500
3.605
0.070
0.175
0.280
RN5VS36A/C 3.492
3.600
3.708
0.072
0.180
0.288
RN5VS37A/C 3.589
3.700
3.811
0.074
0.185
0.296
RN5VS38A/C 3.686
3.800
3.914
0.076
0.190
0.304
RN5VS39A/C 3.783
3.900
4.017
0.078
0.195
0.312
Hysteresis
ELECTRICAL CHARACTEISTICS BY DETECTOR THRESHOLD
(Note 1) Refer to the previously defined "Output Delay Time
t
PLH
".
(Note 2) Refer to the previously defined "Minimum Operating Voltage".
Condition 1 :Topt =25C
Condition 2 :40C
Topt
85C
RN5VS
Output Current 1
Output Current 2
Iout(mA)
Iout(mA)
Conditions
MIN.
TYP.
Conditions
MIN.
TYP.
V
DD
=
0.05
0.50
0.85V
V
DD
=
0.2
1.0
1.0V
Nch
V
DS
=
V
DS
=
0.05V
0.01
0.05
0.50V
V
DD
=
1.5V
1.0
2.0
V
DD
=
0.7V
Output Current 3
Output Delay
Minimum
Iout(mA)
tplh(s)
Vddl(V)
Conditions
MIN.
TYP.
MAX. TYP.
MAX.
Pch
Note 2 Note 2
V
DS
=
Note 1
Condition 1 Condition 1
2.1V
1.0
2.0
100
0.55
0.70
V
DD
=
Condition 2 Condition 2
4.5V
0.65
0.80
Detector Threshold
Conditions
TYP.
40C
Topt
100
85C
Time
Operating Voltage
Tempco.
Vdet/
Topt
(ppm/C)
Topt=25C
RN5VS
Supply Current 1
Supply Current 2
Iss(A)
Iss(A)
Conditions
TYP.
MAX.
Conditions
TYP.
MAX.
V
DD
=
(V
DET
)
1.1
3.3
1.3
3.9
0.16V
V
DD
=
(V
DET
)
+2.0V
V
DD
=
(V
DET
)
1.2
3.6
1.4
4.2
0.20V
Detector Threshold
Detector Threshold
Part Number
Vdet(V)
Vhys(V)
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
RN5VS40A/C 3.880
4.000
4.120
0.080
0.200
0.320
RN5VS41A/C 3.977
4.100
4.223
0.082
0.205
0.328
RN5VS42A/C 4.074
4.200
4.326
0.084
0.210
0.336
RN5VS43A/C 4.171
4.300
4.429
0.086
0.215
0.344
RN5VS44A/C 4.268
4.400
4.532
0.088
0.220
0.352
RN5VS45A/C 4.365
4.500
4.635
0.090
0.225
0.360
RN5VS46A/C 4.462
4.600
4.738
0.092
0.230
0.368
RN5VS47A/C 4.559
4.700
4.841
0.094
0.235
0.376
RN5VS48A/C 4.656
4.800
4.944
0.096
0.240
0.384
RN5VS49A/C 4.753
4.900
5.047
0.098
0.245
0.392
RN5VS50A/C 4.850
5.000
5.150
0.100
0.250
0.400
RN5VS51A/C 4.947
5.100
5.253
0.102
0.255
0.408
RN5VS52A/C 5.044
5.200
5.356
0.104
0.260
0.416
RN5VS53A/C 5.141
5.300
5.459
0.106
0.265
0.424
RN5VS54A/C 5.238
5.400
5.562
0.108
0.270
0.432
RN5VS55A/C 5.335
5.500
5.665
0.110
0.275
0.440
RN5VS56A/C 5.432
5.600
5.768
0.112
0.280
0.448
RN5VS57A/C 5.529
5.700
5.871
0.114
0.285
0.456
RN5VS58A/C 5.626
5.800
5.974
0.116
0.290
0.464
RN5VS59A/C 5.723
5.900
6.077
0.118
0.295
0.472
RN5VS60A/C 5.820
6.000
6.180
0.120
0.300
0.480
Hysteresis
(Note 1) Refer to the previously defined "Output Delay Time t
PLH
".
(Note 2) Refer to the previously defined "Minimum Operating Voltage".
Condition 1 :Topt =25C
Condition 2 :40C
Topt
85C
RN5VS40A/C to RN5VS60A/C
Output Current 1
Output Current 2
Iout(mA)
Iout(mA)
Conditions
MIN.
TYP.
Conditions
MIN.
TYP.
Nch
V
DS
=
V
DS
=
V
DD
=
0.05V
0.01
0.05
0.50V
1.5V
1.0
2.0
V
DD
=
0.7V
Output Current 3
Output Delay
Minimum
Iout(mA)
tplh(s)
Vddl(V)
Conditions
MIN.
TYP.
MAX. TYP.
MAX.
Pch
Note 2 Note 2
V
DS
=
Note 1
Condition 1 Condition 1
2.1V
1.5
3.0
100
0.55
0.70
V
DD
=
Condition 2 Condition 2
8.0V
0.65
0.80
Detector Threshold
Conditions
TYP.
40C
Topt
100
85C
Time
Operating Voltage
Tempco.
Vdet/
Topt
(ppm/C)
RN5VS
Topt=25C
RN5VS
OPERATION
FIG. 1 Block Diagram
Operation Diagram
Step 1. Output Voltage is equal to Power Source Voltage (V
DD
).
Step 2. When Input Voltage to Comparator reaches the state of Vref
V
DD
(Rb+Rc)/(Ra+Rb+Rc)at Point A (Detected Voltage V
DET
), the output of Com-
parator is reserved, so that Output Voltage becomes GND.
Step 3. In the case of CMOS Output, Output Voltage becomes unstable when Supply Voltage (V
DD
) is smaller than Minimum Operating Voltage. In the
case of Nch Open Drain Output, a pulled-up voltage is output.
Step 4. Output Voltage becomes equal to GND.
Step 5. When Input Voltage to Comparator reaches the state of Vref
V
DD
(Rb)/(Ra+ Rb) at Point B (Released Voltage +V
DET
), the output of Comparator is
reversed, so that Output Voltage becomes equal to Supply Voltage (V
DD
).
FIG. 2 Operation Diagram
Step
Step 1
Step 2
Step 3
Step 4
Step 5
Comparator(+) Pin
Input Voltage
I
II
II
II
I
Comparator Output
H
L
Indefinite
L
H
Tr. 1
OFF
ON
Indefinite
ON
OFF
Output Tr.
Pch
ON
OFF
Indefinite
OFF
ON
Nch
OFF
ON
Indefinite
ON
OFF
I
.
Rb + Rc
Ra + Rb + Rc
V
DD
II.
Rb
Ra + Rb
V
DD
GND
OUT
V
DD
Ra
Rb
Rc
Tr.1
Vref
Pch
Nch
+
A
B
Detector Threshold Hysteresis
t
PLH
1
2
3
4
5
In
RN5VS
A, Nch Tr. drain is
connected to OUT pin.
In RN5VS
C, Nch Tr. drain
and Pch Tr. drain are connected
to OUT pin.
Released Volage +V
DET
Supply Volage
Detected Volage V
DET
(V
DD
)
Minimum Operating Volage
GND
Output Volage
(OUT)
GND
RN5VS
TEST CIRCUITS
FIG. 3 Supply Current Test Circuit
FIG. 5 Nch Driver Output Current Test Circuit
FIG. 4 Detector Threshold Test Circuit
FIG. 6 Pch Driver Output Current Test Circuit
FIG. 7 Output Delay Time Test Circuit (1)
FIG. 8 Output Delay Time Test Circuit (2)
In Output Delay Time Test Circuits (1) and (2) in FIG. 7 and FIG. 8, their respective Output Voltage Fall Times
(
t
PHL
) and Rise Times (
t
PLH
) are defined as shown below.
V
DD
VSS
I
SS
V
DD
GND
OUT
RN5VS
SERIES
VDD
VSS
V
DD
GND
OUT
RN5VS
SERIES
Rn
VSS
V
DET
Rn:RN5VS
A:470k
RN5VS
C:None
V
DD
VSS
V
DD
GND
OUT
RN5VS
SERIES
I
OUT
VSS
+V
DS
V
DD
RN5VS
C
SERIES
VSS
V
DD
GND
OUT
I
OUT
VSS
V
DD
V
DS
P.G.
RN5VS
A
SERIES
V
DD
GND
OUT
OUT
VSS
C
OUT
+5.0V
R
OUT
470k
+V
DET
+2.0V
0.7V
VSS
RN5VS
A
SERIES
V
DD
GND
OUT
OUT
VSS
+5.0V
+V
DET
+2.0V
R
OUT
470k
100k
0.7V
VSS
P.G.
R
IN
C
IN
t
PHL
t
PLH
+V
DET
+2.0V
Input Voltage
Output Voltage
0.7V
GND
5.0V
2.5V
GND
Nch Open Drain Output
t
PHL
t
PLH
+V
DET
+2.0V
+V
DET
+2.0V
+V
DET
+2.0V
GND
0.7V
GND
2
CMOS Output
Input Voltage
Output Voltage
Input Voltage V
IN
(V)
Supply Current I
SS
(A)
RN5VS27C
0
2
4
6
8
10
2.5
2.0
1.5
1.0
0.5
0.0
40C
25C
Topt=85C
0
2.5
2.0
1.5
1.0
0.5
0.0
2
4
6
8
10
Input Voltage V
IN
(V)
Supply Current I
SS
(A)
40C
25C
RN5VS09C
Topt=85C
RN5VS
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
2) Detector Threshold vs. Temperature
Input Voltage V
IN
(V)
Supply Current I
SS
(A)
RN5VS45C
40C
0
0.0
0.5
1.0
1.5
2.0
2
4
6
8
10
25C
Topt=85C
Temperature Topt(C)
Detector Threshold V
DET
(V)
RN5VS09C
60
0.84
0.86
0.88
0.90
0.92
0.94
0.96
0.98
1.00
40 20
0
20
40
80
60
100
+V
DET
V
DET
Temperature Topt(C)
Detector Threshold V
DET
(V)
RN5VS27C
60
2.5
2.6
2.7
2.8
2.9
40 20
0
20
40
60
80 100
+V
DET
V
DET
RN5VS
3) Output Voltage vs. Input Voltage
Temperature Topt(C)
Detector Threshold V
DET
(V)
RN5VS45C
60
4.4
4.5
4.6
4.7
4.8
40 20
0
20
40
60
80
100
+V
DET
V
DET
0
0.2
0.4
0.6 0.8
1
1.2
1.4
1.6
0
0.2
0.4
0.6
0.8
1
1.2
1.4
1.6
Input Voltage V
IN
(V)
V
DD
Pull-up 470k
Output Voltage V
OUT
(V)
85C
25C
Topt=40C
RN5VS09A
0
0.2
0.4
0.6 0.8
1
1.2
1.4
1.6
0
1
2
3
4
5
6
Input Voltage V
IN
(V)
5V Pull-up 470k
Output Voltage V
OUT
(V)
25C
Topt=40C
RN5VS09A
85C
0
0.5
1
1.5
2
2.5
3
3.5
4
0
2
1
3
4
Input Voltage V
IN
(V)
V
DD
Pull-up 470k
Output Voltage V
OUT
(V)
85C
Topt=40C
RN5VS27A
25C
0
0.5
1
1.5
2
2.5
3
3.5
4
0
1
2
3
4
5
6
Input Voltage V
IN
(V)
5V Pull-up 470k
Output Voltage V
OUT
(V)
RN5VS27A
Topt=40C
85C
25C
RN5VS
4) Nch Driver Output Current vs. V
DS
0
0
1
2
3
4
5
6
1
2
3
4
5
6
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
Topt=40C
25C
85C
V
DD
Pull-up 470k
RN5VS45A
0
0
1
2
3
4
5
6
1
2
3
4
5
6
Input Voltage V
IN
(V)
Output Voltage V
OUT
(V)
Topt=40C
5V Pull-up 470k
RN5VS45A
85C
25C
V
DS
(V)
Output Current I
OUT
(A)
RN5VS09C
0
700
600
500
400
300
200
100
0
0.2
0.4
0.6
0.8
Topt=25C
V
DD
=0.85V
0.7V
Output Current I
OUT
(A)
RN5VS09C
V
DS
(V)
0
300
250
200
150
100
50
0
0.02
0.04
0.06
0.08
0.1
Topt=25C
V
DD
=0.8V
0.7V
2.0V
1.5V
0.0
0.5
1.0
1.5
2.0
2.5
V
DS
(V)
Output Current I
OUT
(mA)
Topt=25C
RN5VS27C
0
2
4
6
8
10
12
14
16
18
20
V
DD
=2.5V
300
250
200
150
100
50
0
V
DD
=0.8V
0.7V
Output Current I
OUT
(A)
RN5VS27C
0
0.02
0.04
0.06
0.08
0.1
V
DS
(V)
Topt=25C
5) Nch Driver Output Current vs. Input Voltage
RN5VS
Output Current I
OUT
(mA)
RN5VS45C
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
4.5
4.0
V
DS
(V)
1.5V
Topt=25C
V
DD
=4.5V
60
50
40
30
20
10
0
3.0V
3.5V
4.0V
2.5V
2.0V
300
250
200
150
100
50
0
V
DD
=0.8V
0.7V
Output Current I
OUT
(A)
RN5VS45C
0
0.02
0.04
0.06
0.08
0.1
V
DS
(V)
Topt=25C
Input Voltage V
IN
(V)
Output Current I
OUT
(A)
RN5VS09C
0
0.2
0.4
0.6
0.8
1
1.2
25C
Topt=40C
85C
900
800
700
600
500
400
300
200
100
0
14
12
10
8
6
4
2
0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Input Voltage V
IN
(V)
Output Current I
OUT
(mA)
25C
85C
Topt=40C
RN5VS27C
25
20
15
10
5
0
0
1
2
3
4
5
6
Input Voltage V
IN
(V)
Output Current I
OUT
(mA)
85C
25C
RN5VS45C
Topt=40C
RN5VS
6) Pch Driver Output Current vs. Input Voltage
7) Output Delay Time vs. Load Capacitance
Input Voltage V
IN
(V)
Output Current I
OUT
(mA)
RN5VS09C
0
2
4
6
8
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
0.5V
Topt=25C
V
DS
=0.7V
Input Voltage V
IN
(V)
Output Current I
OUT
(mA)
RN5VS27C
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
0
1
2
3
4
5
6
7
Topt=25C
1.5V
1.0V
0.5V
V
DS
=2.1V
Input Voltage V
IN
(V)
Output Current I
OUT
(mA)
RN5VS45C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
0
2
4
6
8
10
Topt=25C
1.5V
1.0V
0.5V
V
DS
=2.1V
0.0001
0.001
0.01
0.1
100
10
1
0.1
0.01
0.001
Load Capacitance C
OUT
(F)
Output Delay Time tp(ms)
t
PHL
t
PLH
RN5VS09A
0.0001
0.001
0.01
0.1
100
10
1
0.1
0.01
0.001
Load Capacitance C
OUT
(F)
Output Delay Time tp(ms)
t
PHL
t
PLH
RN5VS27A
2
8) Output Delay Time vs. Input Pin Capacitance
RN5VS
0.0001
0.001
0.01
0.1
100
10
1
0.1
0.01
0.001
Load Capacitance C
OUT
(F)
Output Delay Time tp(ms)
t
PHL
t
PLH
RN5VS45A
0.0001
0.001
0.01
0.1
100
10
1
0.1
0.01
0.001
Input Pin Capacitance C
IN
(F)
Output Delay Time tp(ms)
t
PHL
t
PLH
RN5VS09A
Input Pin Capacitance C
IN
(F)
Output Delay Time tp(ms)
RN5VS27A
0.0001
0.001
0.01
0.1
100
10
1
0.1
0.01
0.001
t
PHL
t
PLH
0.001
0.01
0.1
1
100
10
1
0.1
0.01
0.001
Input Pin Capacitance C
IN
(F)
Output Delay Time tp(ms)
t
PHL
t
PLH
RN5VS45A
RN5VS
TYPICAL APPLICATIONS
RN5VS
A CPU Reset Circuit (Nch Open Drain Output)
(1) Input Voltage to RN5VS
A is the same as
the input voltage to CPU.
(2) Input Voltage to RN5VS
A is different
from the input voltage to CPU.
RN5VS
A Output delay Time Circuit 2
Memory Back-up Circuit
RN5VS
A Output delay Time Circuit 1
RN5VS
C CPU Reset Circuit (CMOS Output)
R
V
DD
GND
OUT
470k
RN5VS
A
SERIES
V
DD
V
DD
CPU
RESET
GND
V
DD
V
DD1
V
DD2
GND
OUT
470k
R
RN5VS
A
SERIES
V
DD
CPU
RESET
GND
V
DD
V
DD
OUT
GND
RN5VS
C
SERIES
V
DD
CPU
RESET
GND
V
DD
V
DD
OUT
470k
R
GND
RN5VS
A
SERIES
V
DD
CPU
RESET
GND
V
DD
V
DD
GND
OUT
470k
100k
R2
R1
RN5VS
A
SERIES
V
DD
CPU
RESET
GND
OUT
D2
A
B
G
Y1
Y2
Y3
Y4
D1
V
CC
RAM1
GND CS
V
CC
RAM2
GND CS
V
CC
RAM3
GND CS
V
CC
RAM4
GND CS
GND
V
DD
V
DD
GND
V
CC
RN5VS
C
SERIES
RN5VS
2
Voltage Level Indicator Circuit (lighted when the power runs out)
( Nch Open Drain Output)
Detector Threshold Changing Circuit
(Nch Open Drain Output)
Window Comparator Circuit
(Nch Open Drain Output)
Changed Detector Threshold =
(V
DET
)
Hysteresis Voltage =
V
HYS
(Note) Please note that when the value of Ra becomes excessively large, the detector
threshold detected may differ from the value calculated by use of the above for-
mula.
Ra + Rb
Rb
Ra + Rb
Rb
V
DD
V
DD
GND
OUT
RN5VS
A
SERIES
C
V
DD
V
DD
OUT
GND
Ra
Rb
RN5VS
A
SERIES
V
DD
V
DD
V
DD
GND
GND
OUT
OUT
OUT
V
DET
2
V
DET
1
RN5VS
A
SERIES
RN5VS
A
SERIES
V
DD
V
DET
1
V
DET
2
VSS
OUT
VSS
Excessive Charge Preventing Circuit
OUT
R2
R1
R3
R4
V
DD
V
SS
Load
D1
Solar Battery
Light
RN5VS
C
SERIES
1. When RN5VS
C (CMOS Output) is used in FIG. 9, this IC may oscillate by the through-type current at
the detection when impedance is connected between Power Source V
DD
and RN5VS V
DD
Pin.When
RN5VS
A (Nch Open Drain Output) is used in FIG. 9, 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. 10 may cause the oscillation in both RN5VS
C (CMOS Output) and
RN5VS
A (Nch Open Drain Output).
RN5VS
FIG.9
SERIES
RN5VS
V
DD
V
DD
GND
OUT
R2
R1
FIG.10
APPLICATION HINTS
SERIES
V
DD
V
DD
OUT
R
GND
RN5VS
RN5VS
2
PACKAGE DIMENSIONS
(Unit: mm)
SOT-23-5
2.90.2
0.80.1
0.40.1
1.90.2
(0.95)
(0.95)
5
4
1
2
3
+0.2
0.1
1.6
+0.2
0.1
1.1
+0.1
0.05
0.15
2.80.3
0 to 0.1
0.2 MIN.
SOT-23-5
T R
T L
2.0MAX.
0.30.1
4.00.1
2.00.05
4.00.1
3.3
3.2
8.00.3
1.750.1
3.50.05
1.5
+0.1
0
User Direction of Feed.
TAPING SPECIFICATIONS
(Unit: mm)
RICOH COMPANY, LTD.
ELECTRONIC DEVICES DIVISION
HEADQUARTERS
13-1, Himemuro-cho, Ikeda City, Osaka 563, JAPAN
Phone 81-727-53-1111 Fax 81-727-53-6011
YOKOHAMA OFFICE (International Sales)
3-2-3, Shin-Yokohama, Kohoku-ku, Yokohama City, Kanagawa 222,
JAPAN
Phone 81-45-477-1697 Fax 81-45-477-1694 1695
RICOH CORPORATION
ELECTRONIC DEVICES DIVISION
SAN JOSE OFFICE
3001 Orchard Parkway, San Jose, CA 95134-2088, U.S.A.
Phone 1-408-432-8800 Fax 1-408-432-8375
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