RICOH RN5VS14CC-TL

LOW VOLTAGE DETECTOR
RN5VS SERIES
APPLICATION MANUAL
ELECTRONIC DEVICES DIVISION
NO.EA-037-9701
NOTICE
1. The products and the product specifications described in this application manual are subject to change or discontinuation 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 consent of Ricoh.
3. Please be sure to take any necessary formalities under relevant laws or regulations before exporting or otherwise 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 products or the technical information.
June 1995
RN5VS SERIES
APPLICATION MANUAL
CONTENTS
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. VDS .........................................................................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
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 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.
FEATURES
• Ultra-low Supply Current ............................TYP. 0.8µA (VDD=1.5V)
• Broad Operating Voltage Range .................. 0.7V to 10.0V (Topt =25˚C)
• 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)
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)
VDD
VDD
2
2
OUT
1
+
+
–
–
OUT
1
Vref
Vref
3
3
GND
GND
TIME CHART
Supply Voltage
(VDD)
Released Voltage
Detected Voltage
+VDET
–VDET
Detector Threshold Hysteresis
Minimum Operating Voltage
GND
Output Voltage
(OUT)
GND
tPLH
DEFINITION OF OUTPUT DELAY TIME tplh
+VDET + 2.0V
+VDET + 2.0V
Input Voltage
(VDD)
Input Voltage
(VDD)
0.7V
0.7V
GND
GND
+VDET +2.0V
5.0V
Output Voltage
Output Voltage
+VDET + 2.0V
2
2.5V
GND
GND
tPHL
tPLH
Nch Open Drain Output
tPHL
tPLH
CMOS Output
RN5VS
Output Delay Time tPLH 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 +VDET+2.0V is applied to VDD 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 470kΩ 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 +VDET+2.0V is applied to VDD is Time A, and
the time at which the output voltage reaches the voltage of (+VDET+2.0V)/2 is Time B, the time period from
Time A through Time B.
RN5VS
SELECTION GUIDE
The detector threshold, the output type, the packing type, and the taping type of RN5VS series can be designating at the user's request by specifying the part number as follows:
}
RN5VS×× × × – × → Part Number
↑ ↑↑ ↑
a bc d
Code
Contents
a
Setting 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. TR, TL
(refer to Taping Specifications, the standard direction is TR.)
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.
RN5VS
PIN CONFIGURATION
• SOT-23-5
5
4
(mark side)
1
2
3
PIN DESCRIPTION
• SOT-23-5
Pin No.
Symbol
1
OUT
2
VDD
3
GND
4
NC
5
NC
RN5VS
ABSOLUTE MAXIMUM RATINGS
Symbol
Item
VDD
Supply Voltage
VOUT
Output Voltage
IOUT
PD
Topt=25˚C
Rating
Unit
+12
V
CMOS
VSS–0.3 to VDD+0.3
Nch
VSS–0.3 to +12
V
Output Current
70
mA
Power Dissipation
150
mW
Topt
Operating Temperature Range
–40 to +85
˚C
Tstg
Storage Temperature Range
–55 to +125
˚C
Tsolder
Lead Temperature (Soldering)
260˚C,10s
ABSOLUTE MAXIMUM RATINGS
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
ELECTRICAL CHARACTERISTICS
• RN5VS09A/C
Symbol
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
–VDET
Detector Threshold
0.873
0.900
0.927
V
VHYS
Detector Threshold Hysteresis
0.018
0.045
0.072
V
VDD=0.80V
0.8
2.4
VDD=2.90V
0.9
2.7
ISS
Supply Current
VDDH
Maximum Operating Voltage
VDDL
Minimum Operating Voltage
10
Nch
IOUT
Output Current
Topt=25˚C
0.55
0.70
– 40˚C≤Topt≤85˚C
0.65
0.80
VDS=0.05V,VDD=0.70V
0.01
0.05
VDS=0.50V,VDD=0.85V
0.05
0.50
1.0
2.0
Pch VDS=–2.1V,VDD=4.5V
tPLH
∆– VDET
∆Topt
Output Delay Time
–40˚C≤Topt≤85˚C
µA
V
V
mA
±100
µs
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
–VDET
Detector Threshold
1.746
1.800
1.854
V
VHYS
Detector Threshold Hysteresis
0.036
0.090
0.144
V
VDD=1.70V
0.8
2.4
VDD=3.80V
1.0
3.0
ISS
Supply Current
VDDH
Maximum Operating Voltage
VDDL
Minimum Operating Voltage
10
Nch
IOUT
Output Current
Topt=25˚C
0.55
0.70
–40˚C≤Topt≤85˚C
0.65
0.80
VDS=0.05V,VDD=0.70V
0.01
0.05
VDS=0.50V,VDD=1.50V
1.00
2.00
1.0
2.0
Pch VDS=–2.1V,VDD=4.5V
tPLH
∆– VDET
∆Topt
Note 2
ppm/˚C
• RN5VS18A/C
Symbol
Note 1
mA
100
Detector Threshold
Temperature Coefficient
Note
Output Delay Time
Detector Threshold
Temperature Coefficient
±100
µA
V
V
Note 1
mA
mA
100
–40˚C≤Topt≤85˚C
Note
µs
ppm/˚C
Note 2
RN5VS
• RN5VS27A/C
Symbol
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
–VDET
Detector Threshold
2.619
2.700
2.781
V
VHYS
Detector Threshold Hysteresis
0.054
0.135
0.216
V
VDD=2.60V
0.9
2.7
VDD=4.70V
1.1
3.3
ISS
Supply Current
VDDH
Maximum Operating Voltage
VDDL
Minimum Operating Voltage
10
Nch
IOUT
Output Current
Topt=25˚C
0.55
0.70
–40˚C≤Topt≤85˚C
0.65
0.80
VDS=0.05V,VDD=0.70V
0.01
0.05
VDS=0.50V,VDD=1.50V
1.00
2.00
1.0
2.0
Pch VDS=–2.1V,VDD=4.5V
tPLH
∆– VDET
∆Topt
Output Delay Time
–40˚C≤Topt≤85˚C
µA
V
V
mA
±100
µs
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
–VDET
Detector Threshold
3.492
3.600
3.708
V
VHYS
Detector Threshold Hysteresis
0.072
0.180
0.288
V
VDD=3.47V
1.0
3.0
VDD=5.60V
1.2
3.6
ISS
Supply Current
VDDH
Maximum Operating Voltage
VDDL
Minimum Operating Voltage
10
Nch
IOUT
Output Current
Topt=25˚C
0.55
0.70
–40˚C≤Topt≤85˚C
0.65
0.80
VDS=0.05V,VDD=0.70V
0.01
0.05
VDS=0.50V,VDD=1.50V
1.00
2.00
1.0
2.0
Pch VDS=–2.1V,VDD=4.5V
tPLH
∆– VDET
∆Topt
Note 2
ppm/˚C
• RN5VS36A/C
Symbol
Note 1
mA
100
Detector Threshold
Temperature Coefficient
Note
Output Delay Time
Detector Threshold
Temperature Coefficient
±100
µA
V
V
Note 1
mA
mA
100
–40˚C≤Topt≤85˚C
Note
µs
ppm/˚C
Note 2
RN5VS
• RN5VS45A/C
Symbol
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
–VDET
Detector Threshold
4.365
4.500
4.635
V
VHYS
Detector Threshold Hysteresis
0.090
0.225
0.360
V
VDD=4.34V
1.1
3.3
VDD=6.50V
1.3
3.9
ISS
Supply Current
VDDH
Maximum Operating Voltage
VDDL
Minimum Operating Voltage
10
Nch
IOUT
Output Current
Topt=25˚C
0.55
0.70
– 40˚C≤Topt≤85˚C
0.65
0.80
VDS=0.05V,VDD=0.70V
0.01
0.05
VDS=0.50V,VDD=1.50V
1.00
2.00
1.5
3.0
Pch VDS=–2.1V,VDD=8.0V
tPLH
∆–VDET
∆Topt
Output Delay Time
–40˚C≤Topt≤85˚C
µA
V
V
mA
±100
µs
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
–VDET
Detector Threshold
5.238
5.400
5.562
V
VHYS
Detector Threshold Hysteresis
0.108
0.270
0.432
V
VDD=5.20V
1.2
3.6
VDD=7.40V
1.4
4.2
ISS
Supply Current
VDDH
Maximum Operating Voltage
VDDL
Minimum Operating Voltage
10
Nch
IOUT
Output Current
Topt=25˚C
0.55
0.70
–40˚C≤Topt≤85˚C
0.65
0.80
VDS=0.05V,VDD=0.70V
0.01
0.05
VDS=0.50V,VDD=1.50V
1.00
2.00
1.5
3.0
Pch VDS=–2.1V,VDD=8.0V
tPLH
∆–VDET
∆ Topt
(Note 1)
(Note 2)
Note 2
ppm/˚C
• RN5VS54A/C
Symbol
Note 1
mA
100
Detector Threshold
Temperature Coefficient
Note
Output Delay Time
Detector Threshold
Temperature Coefficient
±100
µA
V
V
Note 1
mA
mA
100
–40˚C≤Topt≤85˚C
Note
µs
Note 2
ppm/˚C
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.
Refer to the previously defined “Output Delay Time tPLH”.
RN5VS
ELECTRICAL CHARACTEISTICS BY DETECTOR THRESHOLD
• RN5VS09A/C to RN5VS39A/C
Detector Threshold
Detector Threshold
Hysteresis
Supply Current 1
Supply Current 2
–Vdet(V)
Vhys(V)
Iss(µA)
Iss(µA)
Part Number
RN5VS09A/C
RN5VS10A/C
RN5VS11A/C
RN5VS12A/C
RN5VS13A/C
RN5VS14A/C
RN5VS15A/C
RN5VS16A/C
RN5VS17A/C
RN5VS18A/C
RN5VS19A/C
RN5VS20A/C
RN5VS21A/C
RN5VS22A/C
RN5VS23A/C
RN5VS24A/C
RN5VS25A/C
RN5VS26A/C
RN5VS27A/C
RN5VS28A/C
RN5VS29A/C
RN5VS30A/C
RN5VS31A/C
RN5VS32A/C
RN5VS33A/C
RN5VS34A/C
RN5VS35A/C
RN5VS36A/C
RN5VS37A/C
RN5VS38A/C
RN5VS39A/C
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
0.873
0.970
1.067
1.164
1.261
1.358
1.455
1.552
1.649
1.746
1.843
1.940
2.037
2.134
2.231
2.328
2.425
2.522
2.619
2.716
2.813
2.910
3.007
3.104
3.201
3.298
3.395
3.492
3.589
3.686
3.783
0.900
1.000
1.100
1.200
1.300
1.400
1.500
1.600
1.700
1.800
1.900
2.000
2.100
2.200
2.300
2.400
2.500
2.600
2.700
2.800
2.900
3.000
3.100
3.200
3.300
3.400
3.500
3.600
3.700
3.800
3.900
0.927
1.030
1.133
1.236
1.339
1.442
1.545
1.648
1.751
1.854
1.957
2.060
2.163
2.266
2.369
2.472
2.575
2.678
2.781
2.884
2.987
3.090
3.193
3.296
3.399
3.502
3.605
3.708
3.811
3.914
4.017
0.018
0.020
0.022
0.024
0.026
0.028
0.030
0.032
0.034
0.036
0.038
0.040
0.042
0.044
0.046
0.048
0.050
0.052
0.054
0.056
0.058
0.060
0.062
0.064
0.066
0.068
0.070
0.072
0.074
0.076
0.078
0.045
0.050
0.055
0.060
0.065
0.070
0.075
0.080
0.085
0.090
0.095
0.100
0.105
0.110
0.115
0.120
0.125
0.130
0.135
0.140
0.145
0.150
0.155
0.160
0.165
0.170
0.175
0.180
0.185
0.190
0.195
0.072
0.080
0.088
0.096
0.104
0.112
0.120
0.128
0.136
0.144
0.152
0.160
0.168
0.176
0.184
0.192
0.200
0.208
0.216
0.224
0.232
0.240
0.248
0.256
0.264
0.272
0.280
0.288
0.296
0.304
0.312
(Note 1) Refer to the previously defined “Output Delay Time tPLH”.
(Note 2) Refer to the previously defined “Minimum Operating Voltage”.
Condition 1 :Topt =25˚C
Condition 2 :–40˚C ≤Topt ≤ 85˚C
Conditions
TYP.
MAX.
0.8
2.4
0.9
2.7
1.0
3.0
Conditions
TYP.
MAX.
0.9
2.7
1.0
3.0
1.1
3.3
1.2
3.6
VDD=
(–VDET)
–0.10V
VDD=
(–VDET)
–0.13V
VDD=
(–VDET)
+2.0V
RN5VS
Topt=25˚C
Output Current 1
Output Current 2
Iout(mA)
Conditions
MIN.
Minimum
Operating Voltage
Detector Threshold
Tempco.
Iout(mA)
tplh(µs)
Vddl(V)
∆–Vdet/∆Topt
(ppm/˚C)
Iout(mA)
TYP.
Conditions
VDD=
0.85V
VDD=
1.0V
MIN.
TYP.
0.05
0.50
0.2
1.0
Nch
VDS=
0.05V
Output Current 3
Output Delay
Time
Conditions
MIN.
TYP.
MAX.
Pch
0.01
0.05
VDS=
0.50V
VDS=
–2.1V
TYP.
MAX.
VDD=
0.7V
1.0
1.0
2.0
Note 1
100
Condition 1 Condition 1
0.55
0.70
2.0
VDD=
4.5V
TYP.
Note 2 Note 2
VDD=
1.5V
Conditions
Condition 2 Condition 2
0.65
0.80
–40˚C≤
Topt
≤ 85˚C
±100
RN5VS
• RN5VS40A/C to RN5VS60A/C
Detector Threshold
Detector Threshold
Hysteresis
–Vdet(V)
Vhys(V)
Part Number
RN5VS40A/C
RN5VS41A/C
RN5VS42A/C
RN5VS43A/C
RN5VS44A/C
RN5VS45A/C
RN5VS46A/C
RN5VS47A/C
RN5VS48A/C
RN5VS49A/C
RN5VS50A/C
RN5VS51A/C
RN5VS52A/C
RN5VS53A/C
RN5VS54A/C
RN5VS55A/C
RN5VS56A/C
RN5VS57A/C
RN5VS58A/C
RN5VS59A/C
RN5VS60A/C
Supply Current 1
Supply Current 2
Iss(µA)
MIN.
TYP.
MAX.
MIN.
TYP.
MAX.
3.880
3.977
4.074
4.171
4.268
4.365
4.462
4.559
4.656
4.753
4.850
4.947
5.044
5.141
5.238
5.335
5.432
5.529
5.626
5.723
5.820
4.000
4.100
4.200
4.300
4.400
4.500
4.600
4.700
4.800
4.900
5.000
5.100
5.200
5.300
5.400
5.500
5.600
5.700
5.800
5.900
6.000
4.120
4.223
4.326
4.429
4.532
4.635
4.738
4.841
4.944
5.047
5.150
5.253
5.356
5.459
5.562
5.665
5.768
5.871
5.974
6.077
6.180
0.080
0.082
0.084
0.086
0.088
0.090
0.092
0.094
0.096
0.098
0.100
0.102
0.104
0.106
0.108
0.110
0.112
0.114
0.116
0.118
0.120
0.200
0.205
0.210
0.215
0.220
0.225
0.230
0.235
0.240
0.245
0.250
0.255
0.260
0.265
0.270
0.275
0.280
0.285
0.290
0.295
0.300
0.320
0.328
0.336
0.344
0.352
0.360
0.368
0.376
0.384
0.392
0.400
0.408
0.416
0.424
0.432
0.440
0.448
0.456
0.464
0.472
0.480
(Note 1) Refer to the previously defined “Output Delay Time tPLH”.
(Note 2) Refer to the previously defined “Minimum Operating Voltage”.
Condition 1 :Topt =25˚C
Condition 2 :–40˚C ≤Topt ≤ 85˚C
Conditions
Iss(µA)
TYP.
MAX.
1.1
3.3
Conditions
TYP.
MAX.
1.3
3.9
1.4
4.2
VDD=
(–VDET)
–0.16V
VDD=
(–VDET)
+2.0V
VDD=
(–VDET)
–0.20V
1.2
3.6
RN5VS
Topt=25˚C
Output Current 1
Output Current 2
Iout(mA)
Conditions
MIN.
VDD=
0.7V
Output Delay
Time
Iout(mA)
tplh(µs)
Iout(mA)
TYP.
Conditions
MIN.
TYP.
Nch
VDS=
0.05V
Output Current 3
Conditions
MIN.
TYP.
MAX.
Pch
0.01
0.05
VDS=
0.50V
VDD=
1.5V
1.0
2.0
VDS=
–2.1V
VDD=
8.0V
Minimum
Detector Threshold
Tempco.
Operating Voltage
Vddl(V)
TYP.
MAX.
∆–Vdet/∆Topt
(ppm/˚C)
Conditions
TYP.
Note 2 Note 2
1.5
3.0
Note 1
100
Condition 1 Condition 1 –40˚C≤
0.55
0.70
Topt
≤85˚C
Condition 2 Condition 2
0.65
0.80
±100
RN5VS
OPERATION
VDD
Ra
• In RN5VS××A, Nch Tr. drain is
Pch
+
connected to OUT pin.
–
• In RN5VS××C, Nch Tr. drain
OUT
Vref
Rb
and Pch Tr. drain are connected
Nch
Tr.1
to OUT pin.
Rc
GND
FIG. 1 Block Diagram
Operation Diagram
2
1
Detected Volage –VDET
4
5
B
Released Volage +VDET
Supply Volage
(VDD)
3
A
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
Pch
ON
OFF
Indefinite
OFF
ON
Nch
OFF
ON
Indefinite
ON
OFF
Detector Threshold Hysteresis
Minimum Operating Volage
GND
Output Tr.
I.
Output Volage
Rb + Rc
Ra + Rb + Rc
·VDD
(OUT)
II.
GND
FIG. 2 Operation Diagram
Rb
Ra + Rb
·VDD
tPLH
Step 1. Output Voltage is equal to Power Source Voltage (VDD).
Step 2. When Input Voltage to Comparator reaches the state of Vref≥ VDD·(Rb+Rc)/(Ra+Rb+Rc)at Point A (Detected Voltage –VDET), the output of Comparator is reserved, so that Output Voltage becomes GND.
Step 3. In the case of CMOS Output, Output Voltage becomes unstable when Supply Voltage (VDD) 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 ≤VDD · (Rb)/(Ra+ Rb) at Point B (Released Voltage +VDET), the output of Comparator is
reversed, so that Output Voltage becomes equal to Supply Voltage (VDD).
RN5VS
TEST CIRCUITS
ISS
VDD
VDD
Rn:RN5VS××A:470kΩ
RN5VS××C:None
RN5VS OUT
SERIES
OUT
RN5VS
SERIES
VDET
GND
GND
VSS
VSS
VSS
FIG. 4 Detector Threshold Test Circuit
FIG. 3 Supply Current Test Circuit
VDD
VDD
VDD
RN5VS
SERIES
VDD
OUT
IOUT
RN5VS××C OUT
SERIES
+VDS
GND
VSS
VSS
VSS
+5.0V
VDD
P.G.
VDD –VDS
FIG. 6 Pch Driver Output Current Test Circuit
FIG. 5 Nch Driver Output Current Test Circuit
+VDET+2.0V
IOUT
GND
VSS
0.7V
VSS
Rn
VDD
VDD
RN5VS××A OUT
SERIES
GND
ROUT
470kΩ
OUT
COUT
+5.0V
ROUT
470kΩ
RIN
100kΩ
+VDET+2.0V
0.7V
VSS
VDD RN5VS××A OUT
SERIES
CIN
GND
P.G.
VSS
FIG. 7 Output Delay Time Test Circuit (1)
OUT
VSS
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
(tPHL) and Rise Times (tPLH) are defined as shown below.
+VDET+2.0V
+VDET+2.0V
Input Voltage
Input Voltage
0.7V
0.7V
GND
GND
+VDET+2.0V
5.0V
Output Voltage
+VDET+2.0V
2
Output Voltage 2.5V
GND
GND
tPHL
tPLH
Nch Open Drain Output
tPHL
tPLH
CMOS Output
RN5VS
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
RN5VS27C
RN5VS09C
2.5
2.5
Supply Current ISS(µA)
Supply Current ISS(µA)
Topt=85˚C
2.0
25˚C
1.5
–40˚C
1.0
0.5
0.0
2.0
Topt=85˚C
–40˚C
1.0
0.5
0.0
0
2
4
6
Input Voltage VIN(V)
8
25˚C
1.5
10
0
2
4
6
Input Voltage VIN(V)
8
10
RN5VS45C
2.0
Supply Current ISS(µA)
Topt=85˚C
1.5
25˚C
1.0
–40˚C
0.5
0.0
0
2
4
6
Input Voltage VIN(V)
8
10
2) Detector Threshold vs. Temperature
RN5VS27C
RN5VS09C
2.9
0.98
Detector Threshold VDET(V)
Detector Threshold VDET(V)
1.00
0.96
0.94
0.92
+VDET
0.90
0.88
–VDET
0.86
0.84
–60 –40 –20 0
20 40 60
Temperature Topt(˚C)
80
100
2.8
+VDET
2.7
–VDET
2.6
2.5
–60 –40 –20 0 20 40 60
Temperature Topt(˚C)
80 100
RN5VS
RN5VS45C
Detector Threshold VDET(V)
4.8
+VDET
4.7
4.6
–VDET
4.5
4.4
–60 –40 –20
0 20 40 60
Temperature Topt(˚C)
80 100
3) Output Voltage vs. Input Voltage
RN5VS09A
RN5VS09A
VDD Pull-up 470kΩ
1.6
Output Voltage VOUT(V)
Output Voltage VOUT(V)
1.4
1.2
1
0.8
0.6
25˚C
0.4
85˚C
Topt=–40˚C
0.2
0
5V Pull-up 470kΩ
6
0
0.2
4
25˚C
3
85˚C
2
1
0
0.4 0.6 0.8
1 1.2 1.4 1.6
Input Voltage VIN(V)
Topt=–40˚C
5
0
0.2
0.4 0.6 0.8
1 1.2 1.4 1.6
Input Voltage VIN(V)
RN5VS27A
RN5VS27A
VDD Pull-up 470kΩ
3
2
1
85˚C 25˚C
0
Topt=–40˚C
0
0.5
1
1.5 2 2.5
3
Input Voltage VIN(V)
3.5
4
5V Pull-up 470kΩ
6
Output Voltage VOUT(V)
Output Voltage VOUT(V)
4
5
4
Topt=–40˚C
3
25˚C
2
85˚C
1
0
0
0.5
1
1.5 2 2.5 3
Input Voltage VIN(V)
3.5
4
RN5VS
RN5VS45A
RN5VS45A
VDD Pull-up 470kΩ
6
5V Pull-up 470kΩ
6
Output Voltage VOUT(V)
Output Voltage VOUT(V)
Topt=–40˚C
5
4
3
2
85˚C
25˚C
1
5
25˚C
4
85˚C
3
2
1
Topt=–40˚C
0
0
1
2
3
4
Input Voltage VIN(V)
5
0
6
0
1
2
3
4
Input Voltage VIN(V)
5
6
4) Nch Driver Output Current vs. VDS
RN5VS09C
RN5VS09C
Topt=25˚C
600
VDD=0.85V
500
400
300
0.7V
200
100
0
0
0.2
0.4
0.6
Topt=25˚C
300
Output Current IOUT(µA)
Output Current IOUT(µA)
700
250
200
100
0.7V
50
0
0.8
VDD=0.8V
150
0
0.02
0.04
0.06
VDS(V)
VDS(V)
Topt=25˚C
Output Current IOUT(µA)
Output Current IOUT(mA)
VDD=2.5V
12
10
2.0V
8
6
1.5V
4
Topt=25˚C
300
18
16
14
0.1
RN5VS27C
RN5VS27C
20
0.08
250
200
VDD=0.8V
150
100
0.7V
50
2
0
0.0
0
0.5
1.0
1.5
VDS(V)
2.0
2.5
0
0.02
0.04
0.06
VDS(V)
0.08
0.1
RN5VS
RN5VS45C
RN5VS45C
Topt=25˚C
VDD=4.5V
50
4.0V
40
3.5V
30
3.0V
20
2.5V
2.0V
10
Output Current IOUT(µA)
Output Current IOUT(mA)
60
Topt=25˚C
300
1.5V
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VDS(V)
250
200
VDD=0.8V
150
100
0.7V
50
0
0
0.02
0.04
0.06
VDS(V)
0.08
0.1
5) Nch Driver Output Current vs. Input Voltage
RN5VS09C
RN5VS27C
900
14
Output Current IOUT(mA)
Output Current IOUT(µA)
800
700
600
500
Topt=–40˚C
400
300
25˚C
200
85˚C
100
0
0
0.2
0.4
0.6
0.8
Input Voltage VIN(V)
1
1.2
5
6
RN5VS45C
Output Current IOUT(mA)
25
20
Topt=–40˚C
15
25˚C
10
85˚C
5
0
0
1
2
3
4
Input Voltage VIN(V)
12
10
Topt=–40˚C 25˚C
8
6
85˚C
4
2
0
0.0
0.5
1.0
1.5
2.0
Input Voltage VIN(V)
2.5
3.0
RN5VS
6) Pch Driver Output Current vs. Input Voltage
RN5VS27C
RN5VS09C
Topt=25˚C
1.2
1.0
VDS=0.7V
0.8
0.6
0.5V
0.4
0.2
0.0
3.0
VDS=2.1V
2.5
2
4
6
Input Voltage VIN(V)
1.5V
2.0
1.0V
1.5
1.0
0.5V
0.5
0.0
0
Topt=25˚C
3.5
Output Current IOUT(mA)
Output Current IOUT(mA)
1.4
8
0
1
2
3
4
5
Input Voltage VIN(V)
6
7
RN5VS45C
Topt=25˚C
4.5
Output Current IOUT(mA)
4.0
3.5
VDS=2.1V
3.0
1.5V
2.5
1.0V
2.0
1.5
0.5V
1.0
0.5
0.0
0
2
4
6
Input Voltage VIN(V)
8
10
7) Output Delay Time vs. Load Capacitance
RN5VS09A
RN5VS27A
100
Output Delay Time tp(ms)
Output Delay Time tp(ms)
100
10
1
tPLH
0.1
0.01
0.001
0.0001
tPHL
0.001
0.01
Load Capacitance COUT(µF)
0.1
10
1
tPLH
0.1
0.01
0.001
0.0001
tPHL
0.001
0.01
Load Capacitance COUT(µF)
0.1
RN5VS
RN5VS45A
Output Delay Time tp(ms)
100
10
1
tPLH
0.1
0.01
0.001
0.0001
tPHL
0.001
0.01
Load Capacitance COUT(µF)
0.1
8) Output Delay Time vs. Input Pin Capacitance
RN5VS27A
RN5VS09A
100
Output Delay Time tp(ms)
Output Delay Time tp(ms)
100
10
1
tPLH
0.1
0.01
0.001
0.0001
tPHL
0.001
0.01
Input Pin Capacitance CIN(µF)
0.1
10
1
tPLH
0.1
tPHL
0.01
0.001
0.0001
0.001
0.01
Input Pin Capacitance CIN(µF)
0.1
RN5VS45A
Output Delay Time tp(ms)
100
10
1
tPLH
0.1
tPHL
0.01
0.001
0.001
0.01
0.1
Input Pin Capacitance CIN(µF)
1
2
RN5VS
TYPICAL APPLICATIONS
• RN5VS ×× A CPU Reset Circuit (Nch Open Drain Output)
(1) Input Voltage to RN5VS ×× A is the same as
(2) Input Voltage to RN5VS ×× A is different
the input voltage to CPU.
from the input voltage to CPU.
VDD
VDD
470kΩ
RN5VS××A
SERIES
VDD1
VDD
R
470kΩ
RN5VS××A
SERIES
CPU
RESET
OUT
VDD2
VDD
GND
GND
VDD
R
RESET
OUT
CPU
GND
GND
• RN5VS ×× C CPU Reset Circuit (CMOS Output)
VDD
VDD
VDD
RN5VS××C
SERIES OUT
RESET
CPU
GND
GND
• RN5VS ×× A Output delay Time Circuit 1
• RN5VS ×× A Output delay Time Circuit 2
VDD
VDD
470kΩ
R
RN5VS××A OUT
SERIES
VDD
VDD
RESET
100kΩ
470kΩ
R1
CPU
VDD
GND
GND
RN5VS××A
SERIES
RESET
OUT
GND
• Memory Back-up Circuit
VDD
VCC
D1
D2
A Y1
Y2
B
Y3
G Y4
GND
VDD
RN5VS××C OUT
SERIES
GND
R2
VDD
VCC
VCC
VCC
VCC
RAM1
RAM2
RAM3
RAM4
GND CS
GND CS
GND CS
GND CS
CPU
GND
RN5VS
• Voltage Level Indicator Circuit (lighted when the power runs out)
( Nch Open Drain Output)
VDD
VDD
OUT
RN5VS××A
SERIES
GND
• Detector Threshold Changing Circuit
(Nch Open Drain Output)
VDD
Changed Detector Threshold =
Ra
OUT RN5VS××A
SERIES
VDD
Hysteresis Voltage =
Rb
C
GND
Ra + Rb
Rb
Ra + Rb
Rb
· (–VDET )
· VHYS
(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 formula.
• Window Comparator Circuit
(Nch Open Drain Output)
VDD
VDET1
VDET2
VDD
VDD
RN5VS××A OUT
SERIES VDET2
VDD
RN5VS××A OUT
SERIES
VDET1
OUT
VSS
GND
OUT
GND
VSS
• Excessive Charge Preventing Circuit
D1
R1
R2
VDD
R4
OUT
R3
RN5VS××C
SERIES
Load
Solar Battery
Light
VSS
2
RN5VS
APPLICATION HINTS
VDD
VDD
R1
R
VDD
VDD
R2
RN5VS
OUT
SERIES
GND
FIG.9
RN5VS
OUT
SERIES
GND
FIG.10
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 VDD and RN5VS VDD 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
PACKAGE DIMENSIONS (Unit: mm)
• SOT-23-5
2.9±0.2
1
2
2.8±0.3
4
+0.2
1.6 –0.1
5
0.8±0.1
0.2 MIN.
+0.2
1.1
–0.1
1.9±0.2
(0.95) (0.95)
0 to 0.1
3
0.4±0.1
+0.1
0.15 –0.05
TAPING SPECIFICATIONS (Unit: mm)
• SOT-23-5
4.0±0.1
ø 1.5+0.1
–0
2.0±0.05
8.0±0.3
3.5±0.05
1.75±0.1
0.3±0.1
3.2
3.3
4.0±0.1
2.0MAX.
TL
TR
User Direction of Feed.
2
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