RN5VS31CC [RICOH]
LOW VOLTAGE DETECTOR; 低电压检测
| 型号： | RN5VS31CC |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | LOW VOLTAGE DETECTOR |
| 文件： | 总30页 (文件大小：201K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
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 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
RN5VS SERIES
APPLICATION MANUAL
CONTENTS
......................................................................................................
OUTLINE
1
1
1
2
2
2
4
5
5
6
....................................................................................................
FEATURES
.............................................................................................
APPLICATIONS
BLOCK DIAGRAMS
.......................................................................................
.................................................................................................
TIME CHART
....................................................
DEFINITION OF OUTPUT DELAY TIME tplh
.......................................................................................
SELECTION GUIDE
...................................................................................
PIN CONFIGURATION
........................................................................................
PIN DESCRIPTION
...................................................................
ABSOLUTE MAXIMUM RATINGS
.................................................................
ELECTRICAL CHARACTERISTICS
7
10
14
15
16
16
16
17
18
19
20
20
21
22
22
22
22
22
22
23
23
23
23
....................
ELECTRICAL CHARACTERITICS BY DETECTOR THRESHOLD
OPERATION
TEST CIRCUITS
TYPICAL CHARACTERISTICS
................................................................................................
...........................................................................................
......................................................................
1) Supply Current vs. Input Voltage ...........................................................................
2) Detector Threshold vs. Temperature .......................................................................
3) Output Voltage vs. Input Voltage ...........................................................................
4) Nch Driver Output Current vs. VDS .........................................................................
5) Nch Driver Output Current vs. Input Voltage................................................................
6) Pch Driver Output Current vs. Input Voltage................................................................
7) Output Delay Time vs. Load Capacitance ..................................................................
8) Output Delay Time vs. Input Pin Capacitance ..............................................................
............................................................................
TYPICAL APPLICATIONS
A CPU Reset Circuit(Nch Open Drain Output)....................................................
C CPU Reset Circuit(CMOS Output) .............................................................
A Output delay Time Circuit 1.....................................................................
A Output delay Time Circuit 2.....................................................................
• RN5VS
• RN5VS
• RN5VS
• RN5VS
××
××
××
××
• Memory Back-up Circuit .....................................................................................
• Voltage Level Indicator Circuit (lighted when the power runs out)............................................
• Detector Threshold Changing Circuit ........................................................................
• Window Comparator Circuit .................................................................................
• Excessive Charge Preventing Circuit ........................................................................
..............................................................................
PACKAGE DIMENSIONS
TAPING SPECIFICATIONS
25
25
...........................................................................
LOW VOLTAGE DETECTOR
R N 5 VS S E R IE S
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.
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
3
OUT
GND
+
–
+
–
1
3
Vref
Vref
GND
TIME CHART
Released Voltage +VDET
Detected Voltage –VDET
Detector Threshold Hysteresis
Supply Voltage
(VDD)
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
GND
0.7V
GND
+VDET +2.0V
5.0V
Output Voltage
Output Voltage
+VDET + 2.0V
2
2.5V
GND
GND
tPHL
tPLH
tPHL
tPLH
CMOS Output
Nch Open Drain 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 desig-
nating at the user's request by specifying the part number as follows:
RN5VS××××– × → Part Number
↑ ↑ ↑ ↑
a b c d
Code
Contents
Setting Detector Threshold (–VDET):
a
Stepwise setting with a step of 0.1V in the range of 0.9V to 6.0V is possible.
Designation of Output Type:
A: Nch Open Drain
C: CMOS
b
c
d
Designation of Packing Type:
A: Taping
C: Antistatic bag for samples
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
OUT
VDD
1
2
3
4
5
GND
NC
NC
RN5VS
ABSOLUTE MAXIMUM RATINGS
Topt=25˚C
Symbol
Item
Rating
Unit
VDD
Supply Voltage
Output Voltage
+12
VSS–0.3 to VDD+0.3
VSS–0.3 to +12
70
V
CMOS
Nch
VOUT
V
IOUT
PD
Output Current
mA
mW
˚C
Power Dissipation
150
Topt
Operating Temperature Range
Storage Temperature Range
Lead Temperature (Soldering)
–40
–55
85
to +
Tstg
125
˚C
to +
Tsolder
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
Topt=25˚C
Symbol
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
Note
–VDET
VHYS
Detector Threshold
0.873 0.900 0.927
0.018 0.045 0.072
Detector Threshold Hysteresis
V
VDD=0.80V
VDD=2.90V
0.8
0.9
2.4
2.7
ISS
Supply Current
µA
V
VDDH
Maximum Operating Voltage
10
˚C
Topt=25
0.55
0.65
0.05
0.50
2.0
0.70
0.80
V
Note 1
VDDL
Minimum Operating Voltage
–
40˚C≤Topt≤85˚C
VDS=0.05V,VDD=0.70V 0.01
VDS=0.50V,VDD=0.85V 0.05
mA
Nch
IOUT
tPLH
Output Current
Pch VDS=–2.1V,VDD=4.5V
1.0
mA
µs
Output Delay Time
100
Note 2
–
∆ VDET
Detector Threshold
Temperature Coefficient
–40˚C≤Topt≤85˚C
±100
ppm/˚C
∆Topt
•
RN5VS18A/C
Symbol
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
Note
–VDET
VHYS
Detector Threshold
1.746 1.800 1.854
0.036 0.090 0.144
Detector Threshold Hysteresis
V
VDD=1.70V
VDD=3.80V
0.8
1.0
2.4
3.0
ISS
Supply Current
µA
V
VDDH
Maximum Operating Voltage
10
Topt=25˚C
0.55
0.65
0.05
2.00
2.0
0.70
0.80
V
Note 1
VDDL
Minimum Operating Voltage
–40˚C≤Topt≤85˚C
VDS=0.05V,VDD=0.70V 0.01
VDS=0.50V,VDD=1.50V 1.00
mA
Nch
IOUT
tPLH
Output Current
Pch VDS=–2.1V,VDD=4.5V
1.0
mA
µs
Output Delay Time
100
Note 2
–
∆ VDET
Detector Threshold
–40˚C≤Topt≤85˚C
±100
ppm/˚C
∆Topt
Temperature Coefficient
RN5VS
• RN5VS27A/C
Symbol
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
Note
–VDET
VHYS
Detector Threshold
2.619 2.700 2.781
0.054 0.135 0.216
Detector Threshold Hysteresis
V
VDD=2.60V
VDD=4.70V
0.9
1.1
2.7
3.3
ISS
Supply Current
µA
V
VDDH
Maximum Operating Voltage
10
Topt=25˚C
0.55
0.65
0.05
2.00
2.0
0.70
0.80
V
Note 1
VDDL
Minimum Operating Voltage
–40˚C≤Topt≤85˚C
VDS=0.05V,VDD=0.70V 0.01
VDS=0.50V,VDD=1.50V 1.00
mA
Nch
IOUT
tPLH
Output Current
Pch VDS=–2.1V,VDD=4.5V
1.0
mA
µs
Output Delay Time
100
Note 2
–
∆ VDET
Detector Threshold
Temperature Coefficient
–40˚C≤Topt≤85˚C
±100
ppm/˚C
∆Topt
•
RN5VS36A/C
Symbol
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
Note
–VDET
VHYS
Detector Threshold
3.492 3.600 3.708
0.072 0.180 0.288
Detector Threshold Hysteresis
V
VDD=3.47V
VDD=5.60V
1.0
1.2
3.0
3.6
ISS
Supply Current
µA
V
VDDH
Maximum Operating Voltage
10
Topt=25˚C
0.55
0.65
0.70
0.80
Note 1
V
VDDL
Minimum Operating Voltage
–40˚C≤Topt≤85˚C
VDS=0.05V,VDD=0.70V 0.01
VDS=0.50V,VDD=1.50V 1.00
0.05
2.00
2.0
mA
Nch
IOUT
tPLH
Output Current
Pch VDS=–2.1V,VDD=4.5V
1.0
mA
µs
Output Delay Time
100
Note 2
–
∆ VDET
Detector Threshold
Temperature Coefficient
–40˚C≤Topt≤85˚C
±100
ppm/˚C
∆Topt
RN5VS
•
RN5VS45A/C
Symbol
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
Note
–VDET
VHYS
Detector Threshold
4.365 4.500 4.635
0.090 0.225 0.360
Detector Threshold Hysteresis
V
VDD=4.34V
VDD=6.50V
1.1
1.3
3.3
3.9
ISS
Supply Current
µA
V
VDDH
Maximum Operating Voltage
10
Topt=25˚C
0.55
0.65
0.05
2.00
3.0
0.70
0.80
V
Note 1
VDDL
Minimum Operating Voltage
–
40˚C≤Topt≤85˚C
VDS=0.05V,VDD=0.70V 0.01
VDS=0.50V,VDD=1.50V 1.00
mA
Nch
IOUT
tPLH
Output Current
Pch VDS=–2.1V,VDD=8.0V
1.5
mA
µs
Output Delay Time
100
Note 2
∆–VDET
∆Topt
Detector Threshold
–40˚C≤Topt≤85˚C
±100
ppm/˚C
Temperature Coefficient
•
RN5VS54A/C
Symbol
Topt=25˚C
Item
Conditions
MIN.
TYP.
MAX.
Unit
V
Note
–VDET
VHYS
Detector Threshold
5.238 5.400 5.562
0.108 0.270 0.432
Detector Threshold Hysteresis
V
VDD=5.20V
VDD=7.40V
1.2
1.4
3.6
4.2
ISS
Supply Current
µA
V
VDDH
Maximum Operating Voltage
10
Topt=25˚C
0.55
0.65
0.05
2.00
3.0
0.70
0.80
V
Note 1
VDDL
Minimum Operating Voltage
–
40˚C≤Topt≤85˚C
VDS=0.05V,VDD=0.70V 0.01
VDS=0.50V,VDD=1.50V 1.00
mA
Nch
IOUT
tPLH
Output Current
Pch VDS=–2.1V,VDD=8.0V
1.5
mA
µs
Output Delay Time
100
Note 2
∆–VDET
∆ Topt
Detector Threshold
–40˚C≤Topt≤85˚C
±100
ppm/˚C
Temperature Coefficient
(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.
(Note 2) Refer to the previously defined “Output Delay Time tPLH”.
RN5VS
ELECTRICAL CHARACTEISTICS BY DETECTOR THRESHOLD
•
RN5VS09A/C to RN5VS39A/C
Detector Threshold
Hysteresis
Detector Threshold
Supply Current 1
Iss(µA)
Supply Current 2
Iss(µA)
Part Number
–Vdet(V)
TYP.
Vhys(V)
MIN.
MAX.
MIN.
TYP.
MAX.
Conditions
TYP.
MAX. Conditions
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
0.9
2.7
0.8
2.4
2.7
3.0
1.0
1.1
1.2
3.0
V
DD=
RN5VS19A/C 1.843 1.900 1.957 0.038 0.095 0.152 (–VDET
)
–0.10V
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
V
DD=
0.9
3.3
(–VDET
+2.0V
)
VDD=
RN5VS34A/C 3.298 3.400 3.502 0.068 0.170 0.272 (–VDET
)
1.0
3.6
–0.13V
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
tPLH”.
(Note 1) Refer to the previously defined “Output Delay Time
(Note 2) Refer to the previously defined “Minimum Operating Voltage”.
Condition 1 :Topt =25˚C
Condition 2 :–40˚C ≤Topt ≤ 85˚C
RN5VS
Topt=25˚C
Output Delay
Time
Minimum
Detector Threshold
Tempco.
Output Current 1
Iout(mA)
Output Current 2
Iout(mA)
Output Current 3
Iout(mA)
Operating Voltage
∆–Vdet/∆Topt
(ppm/˚C)
tplh(µs)
MAX.
Vddl(V)
Conditions
MIN.
TYP.
Conditions
MIN.
TYP.
Conditions
MIN.
TYP.
TYP.
MAX.
Conditions
TYP.
V
DD=
0.05
0.50
0.85V
V
DD=
0.2
1.0
1.0V
Nch
Pch
Note 2 Note 2
–40˚C≤
VDS=
0.05V 0.01
VDS=
0.50V
VDS=
–2.1V
Note 1
100
Condition 1
0.55
Condition 1
0.70
Topt ±100
0.05
1.0
2.0
≤
85˚C
VDD=
1.5V
1.0
2.0
VDD=
0.7V
VDD=
4.5V
Condition 2
0.65
Condition 2
0.80
RN5VS
•
RN5VS40A/C to RN5VS60A/C
Detector Threshold
Hysteresis
Supply Current 1
Iss(µA)
Supply Current 2
Iss(µA)
Detector Threshold
Part Number
–Vdet(V)
TYP.
Vhys(V)
MIN.
MAX.
MIN.
TYP.
MAX.
Conditions
TYP.
MAX.
Conditions
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
V
DD=
(–VDET
)
1.1
3.3
1.3
3.9
–0.16V
V
DD=
(–VDET
+2.0V
)
VDD=
(–VDET
)
1.2
3.6
1.4
4.2
–0.20V
60A/C 5.820 6.000 6.180 0.120 0.300 0.480
RN5VS
(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
RN5VS
Topt=25˚C
Output Delay
Time
Minimum
Detector Threshold
Output Current 1
Iout(mA)
Output Current 2
Iout(mA)
Output Current 3
Iout(mA)
Tempco.
Operating Voltage
∆–Vdet/∆Topt
(ppm/˚C)
tplh(µs)
MAX.
Vddl(V)
Conditions
MIN.
TYP.
Conditions
MIN.
TYP.
Conditions
MIN.
TYP.
TYP.
MAX.
Conditions
TYP.
Nch
Pch
Note 2 Note 2
VDS=
0.05V 0.01
VDS= VDD=
0.05 0.50V 1.5V
VDS=
–2.1V
Note 1
100
Condition 1
0.55
Condition 1
0.70
–
40˚C≤
1.0
2.0
1.5
3.0
Topt
±100
≤85˚C
VDD=
0.7V
VDD=
8.0V
Condition 2 Condition 2
0.65
0.80
RN5VS
OPERATION
VDD
Ra
+
Pch
Nch
•
•
In RN5VS××A, Nch Tr. drain is
connected to OUT pin.
–
OUT
In RN5VS××C, Nch Tr. drain
and Pch Tr. drain are connected
to OUT pin.
Rb
Tr.1
Rc
GND
FIG. 1 Block Diagram
Operation Diagram
4
5
1
2
3
Step
Step 1 Step 2
Step 3
Step 4 Step 5
Comparator(+) Pin
Input Voltage
I
II
II
II
I
B
Released Volage +VDET
Detector Threshold Hysteresis
A
Supply Volage
(VDD
Detected Volage –VDET
Comparator Output
H
L
Indefinite
Indefinite
L
H
)
Tr. 1
OFF ON
ON OFF
Minimum Operating Volage
GND
Pch
ON OFF Indefinite OFF ON
OFF ON Indefinite ON OFF
Output Tr.
Nch
Rb + Rc
Ra + Rb + Rc
Rb
I
.
·VDD
Output Volage
(OUT)
·VDD
.
II
Ra + Rb
GND
tPLH
FIG. 2 Operation Diagram
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 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 (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
Rn:RN5VS××A:470kΩ
VDD
VDD
RN5VS××C:None
VDD Rn
OUT
VDD
OUT
RN5VS
RN5VS
SERIES
VDET
SERIES
GND
GND
VSS
VSS
VSS
FIG. 4 Detector Threshold Test Circuit
FIG. 3 Supply Current Test Circuit
VDD
VDD
VDD
VDD
IOUT
IOUT
OUT
OUT
C
RN5VS
SERIES
RN5VS××
SERIES
VDD –VDS
VSS
+VDS
VSS
GND
GND
VSS
VSS
FIG. 6 Pch Driver Output Current Test Circuit
FIG. 5 Nch Driver Output Current Test Circuit
+5.0V
+5.0V
ROUT
470kΩ
OUT
RIN
100kΩ
ROUT
470kΩ
VDD
+VDET+2.0V
+VDET+2.0V
VDD
OUT
A
OUT
A
SERIES
RN5VS××
RN5VS××
SERIES
P.G.
P.G.
OUT
0.7V
VSS
0.7V
VSS
CIN
COUT
GND
GND
VSS
VSS
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
(tPHL) and Rise Times (tPLH) are defined as shown below.
+VDET+2.0V
+VDET+2.0V
Input Voltage
Input Voltage
0.7V
GND
0.7V
GND
+VDET+2.0V
5.0V
Output Voltage
+VDET+2.0V
2
Output Voltage
2.5V
GND
GND
tPHL
tPLH
tPHL
tPLH
Nch Open Drain Output
CMOS Output
RN5VS
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
RN5VS27C
RN5VS09C
2.5
2.0
1.5
1.0
0.5
0.0
2.5
Topt=85˚C
2.0
Topt=85˚C
25˚C
25˚C
1.5
–40˚C
–40˚C
1.0
0.5
0.0
0
2
4
6
8
10
0
2
4
6
8
10
Input Voltage VIN(V)
Input Voltage VIN(V)
RN5VS45C
2.0
1.5
1.0
0.5
Topt=85˚C
25˚C
–40˚C
0.0
0
2
4
6
8
10
Input Voltage VIN(V)
2) Detector Threshold vs. Temperature
RN5VS27C
RN5VS09C
1.00
2.9
0.98
0.96
+VDET
–VDET
2.8
2.7
0.94
+VDET
0.92
0.90
–VDET
0.88
2.6
2.5
0.86
0.84
–60 –40 –20
0
20 40 60 80 100
–60 –40 –20
0
20 40 60 80 100
Temperature Topt(˚C)
Temperature Topt(˚C)
RN5VS
RN5VS45C
4.8
+VDET
4.7
4.6
–VDET
4.5
4.4
–60 –40 –20
0
20 40 60 80 100
Temperature Topt(˚C)
3) Output Voltage vs. Input Voltage
RN5VS09A
RN5VS09A
VDD Pull-up 470kΩ
5V Pull-up 470kΩ
1.6
1.4
1.2
1
6
5
4
Topt=–40˚C
25˚C
0.8
3
2
85˚C
0.6
0.4
25˚C
85˚C
Topt=–40˚C
1
0
0.2
0
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 VIN(V)
Input Voltage VIN(V)
RN5VS27A
RN5VS27A
5V Pull-up 470kΩ
VDD Pull-up 470kΩ
6
4
5
4
3
2
1
3
2
Topt=–40˚C
25˚C
85˚C
1
0
85˚C
25˚C
Topt=–40˚C
0
0
0.5
1
1.5
2
2.5
3
3.5
4
0
0.5
1
1.5
2
2.5
3
3.5
4
Input Voltage VIN(V)
Input Voltage VIN(V)
RN5VS
RN5VS45A
RN5VS45A
VDD Pull-up 470kΩ
5V Pull-up 470kΩ
6
5
4
3
2
6
5
4
Topt=–40˚C
25˚C
85˚C
3
2
1
85˚C
25˚C
Topt=–40˚C
1
0
0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
4) Nch Driver Output Current vs. VDS
RN5VS09C
RN5VS09C
Topt=25˚C
Topt=25˚C
300
250
200
150
100
50
700
600
500
400
300
200
100
0
VDD=0.85V
0.7V
VDD=0.8V
0.7V
0
0
0.02
0.04
0.06
0.08
0.1
0
0.2
0.4
0.6
0.8
VDS(V)
VDS(V)
RN5VS27C
RN5VS27C
Topt=25˚C
Topt=25˚C
300
250
200
150
100
50
20
18
16
14
12
10
8
VDD=2.5V
VDD=0.8V
2.0V
6
0.7V
1.5V
4
2
0
0
0
0.02
0.04
0.06
0.08
0.1
0.0
0.5
1.0
1.5
2.0
2.5
VDS(V)
VDS(V)
RN5VS
RN5VS45C
RN5VS45C
Topt=25˚C
Topt=25˚C
VDD=4.5V
300
250
200
150
100
50
60
50
40
30
20
10
0
4.0V
3.5V
VDD=0.8V
3.0V
2.5V
0.7V
2.0V
1.5V
0
0
0.02
0.04
0.06
0.08
0.1
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5
VDS(V)
VDS(V)
5) Nch Driver Output Current vs. Input Voltage
RN5VS09C
RN5VS27C
900
800
700
600
14
12
10
8
Topt=–40˚C
25˚C
500
Topt=–40˚C
400
6
300
25˚C
200
85˚C
4
85˚C
2
100
0
0.0
0
0
0.2
0.4
0.6
0.8
1
1.2
0.5
1.0
1.5
2.0
2.5
3.0
Input Voltage VIN(V)
Input Voltage VIN(V)
RN5VS45C
25
20
15
10
5
Topt=–40˚C
25˚C
85˚C
0
0
1
2
3
4
5
6
Input Voltage VIN(V)
RN5VS
6) Pch Driver Output Current vs. Input Voltage
RN5VS27C
RN5VS09C
Topt=25˚C
Topt=25˚C
3.5
3.0
1.4
1.2
VDS=2.1V
1.5V
2.5
1.0
VDS=0.7V
0.8
2.0
1.5
1.0
0.5
1.0V
0.5V
0.6
0.5V
0.4
0.2
0.0
0.0
0
1
2
3
4
5
6
7
0
2
4
6
8
Input Voltage VIN(V)
Input Voltage VIN(V)
RN5VS45C
Topt=25˚C
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
VDS=2.1V
1.5V
1.0V
0.5V
0
2
4
6
8
10
Input Voltage VIN(V)
7) Output Delay Time vs. Load Capacitance
RN5VS09A
RN5VS27A
100
10
100
10
tPLH
tPLH
1
1
0.1
0.1
tPHL
tPHL
0.01
0.01
0.001
0.001
0.0001
0.0001
0.001
0.01
0.1
0.001
0.01
0.1
Load Capacitance COUT(µF)
Load Capacitance COUT(µF)
RN5VS
RN5VS45A
100
10
tPLH
1
0.1
0.01
tPHL
0.001
0.0001
0.001
0.01
0.1
Load Capacitance COUT(µF)
8) Output Delay Time vs. Input Pin Capacitance
RN5VS27A
RN5VS09A
100
10
100
10
1
1
tPLH
tPLH
tPHL
0.1
0.1
tPHL
0.01
0.001
0.01
0.001
0.0001
0.001
0.01
0.1
0.0001
0.001
0.01
0.1
Input Pin Capacitance CIN(µF)
Input Pin Capacitance CIN(µF)
RN5VS45A
100
10
1
tPLH
tPHL
0.1
0.01
0.001
0.001
0.01
0.1
1
Input Pin Capacitance CIN(µF)
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
VDD1
VDD2
VDD
VDD
VDD
VDD
470kΩ
470kΩ
R
R
CPU
RN5VS××
SERIES
A
CPU
RN5VS××
SERIES
A
RESET
GND
RESET
GND
OUT
OUT
GND
GND
• RN5VS××C CPU Reset Circuit (CMOS Output)
VDD
VDD
VDD
CPU
RN5VS××
SERIES
C
RESET
GND
OUT
GND
• RN5VS××A Output delay Time Circuit 1
• RN5VS××A Output delay Time Circuit 2
VDD
VDD
VDD
VDD
VDD
470kΩ
R
470kΩ
100kΩ
R1
R2
OUT
A
CPU
CPU
RN5VS××
SERIES
RN5VS××
SERIES
A
RESET
GND
RESET
GND
VDD
OUT
GND
GND
•
Memory Back-up Circuit
VDD
VCC
Y1
Y2
Y3
Y4
D1
VCC
VCC
VCC
VCC
D2
A
B
RAM1
RAM2
RAM3
RAM4
G
GND CS
GND CS
GND CS
GND CS
GND
VDD
OUT
RN5VS××
C
SERIES
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)
Ra + Rb
Rb
VDD
Ra
Changed Detector Threshold =
· (–VDET )
OUT
VDD
C
Ra + Rb
RN5VS××
SERIES
A
Hysteresis Voltage =
Rb
· VHYS
Rb
GND
(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.
•
Window Comparator Circuit
(Nch Open Drain Output)
VDD
VDET1
VDET2
VDD
VDD
OUT
VDET2
RN5VS××
SERIES
A
OUT
VDD
VSS
OUT
A
RN5VS××
SERIES
GND
VDET1
OUT
VSS
GND
•
Excessive Charge Preventing Circuit
R1
D1
Light
VDD
R2
R4
OUT
RN5VS××
C
SERIES
R3
VSS
2
RN5VS
APPLICATION HINTS
VDD
VDD
VDD
VDD
R1
R
R2
RN5VS
OUT
RN5VS
SERIES
OUT
SERIES
GND
GND
FIG.10
FIG.9
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
+0.2
–0.1
1.1
1.9±0.2
(0.95) (0.95)
0.8±0.1
5
4
0 to 0.1
1
2
3
0.4±0.1
+0.1
–0.05
0.15
TAPING SPECIFICATIONS (Unit: mm)
•
SOT-23-5
4.0±0.1
+0.1
–0
ø
1.5
0.3±0.1
2.0±0.05
3.2
3.3
4.0±0.1
T L
2.0MAX.
T R
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
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