R3113D271A-TR [RICOH]
Power Supply Support Circuit, Fixed, 1 Channel, CMOS, SON1408-3;
| 型号： | R3113D271A-TR |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, CMOS, SON1408-3 |
| 文件： | 总18页 (文件大小：315K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
LOW VOLTAGE DETECTOR
NO. EA-115-0506
R3113D SERIES
OUTLINE
The R3113D series are CMOS-based voltage detector ICs with high detector threshold accuracy and ultra-low
supply current, which can be operated at an extremely low voltage and is used for system reset as an example.
Each of these ICs consists of a voltage reference unit, a comparator, resistors for detector threshold setting,
an output driver and a hysteresis circuit. The detector threshold is fixed with high accuracy internally and does
not require any adjustment.
Two output types, Nch open drain type and CMOS type are available.
Since the package is ultra-small SON1408-3 (MFPAK), high density mounting on board is possible .
FEATURES
• Ultra-low Supply Current.................................................................Typ. 1.4µA (VDET>1.5V: VDD=VDET+1.0V)
• Wide Range of Operating Voltage...............................................0.6V to 6.0V (VDET=3.0V, Topt=25°C)
• Detector Threshold............................................................................Stepwise setting with a step of 0.1V in the range
from 1.2V to 4.5V is possible.
• High Accuracy Detector Threshold..............................................±2.0%
• Low Temperature-Drift Coefficient of Detector Threshold...Typ. ±100ppm/°C
• Two Output Types..............................................................................Nch Open Drain and CMOS
• Ultra-small Package..........................................................................SON1408-3
APPLICATIONS
• CPU and Logic Circuit Reset
• Battery Checker
• Window Comparator
• Wave Shaping Circuit
• Battery Back-up Circuit
• Power Failure Detector
1
R3113D
BLOCK DIAGRAMS
R3113Dxx1A
R3113Dxx1C
VDD
VDD
OUT
GND
OUT
GND
Vref
Vref
TIMING CHART
Release Voltage +VDET
Detector Threshold -VDET
Detector Threshold
Hysteresis
Supply Voltage
(VDD
)
Minimum Operating Voltage
VSS
Output Voltage
(OUT)
VSS
tPLH
2
R3113D
DEFINITION OF OUTPUT DELAY TIME
Output Delay Time tPLH is defined as follows:
1. In the case of Nch Open Drain Output:
Under the condition of the output pin (OUT) is pulled up through a resistor of 470kΩ to 5V, the time interval
between the rising edge of VDD pulse from 0.85V to (+VDET)+ 1.0V and becoming of the output voltage to 2.5V.
2. In the case of CMOS Output:
The time interval between the rising edge of VDD pulse from 0.85V to (+VDET)+ 1.0V and becoming of the
output voltage to (VDD/2) V.
+VDET + 1.0V
+VDET + 1.0V
Input Voltage
(VDD
Input Voltage
(VDD
)
)
0.85V
GND
0.85V
GND
+VDET+1.0V
5.0V
Output Voltage
+VDET+1.0V
Output Voltage
2.5V
GND
2
GND
tPHL
tPLH
tPHL
tPLH
Nch Open Drain Output
CMOS Output
SELECTION GUIDE
The detector threshold, the output type and the taping type of R3113 Series can be designated at the users’
request by specifying the part number as follows;
R3113xxx1x-xx ← Part Number
↑ ↑ ↑ ↑
a b c d
Code
Contents
Designation of Package Type;
SON1408-3
a
Setting Detector Threshold (−VDET);
b
c
Stepwise setting with a step of 0.1V in the range of 1.2V to 4.5V is possible.
Designation of Output Type;
A: Nch Open Drain
C: CMOS
Designation of Packing or Taping Type;
d
Ex.TR prescribed as standard directions.
(Refer to Taping Specifications.) Antistatic bag for samples: C
3
R3113D
PIN CONFIGURATION
ꢀSON1408-3
3
(mark side)
1
2
PIN DESCRIPTION
• R3113D
Pin No.
Symbol
OUT
Description
1
2
3
Output Pin
Input Pin
VDD
GND
Ground Pin
ABSOLUTE MAXIMUM RATINGS
Symbol
VDD
Item
Rating
6.5
Unit
V
Supply Voltage
VOUT1
VOUT2
IOUT
Output Voltage (CMOS)
Output Voltage (Nch)
Output Current
V
VSS−0.3 to VDD+0.3
VSS−0.3 to 6.5
20
V
mA
mW
°C
°C
Note1
∗
PD
250
Power Dissipation
Topt
Tstg
Operating Temperature Range
Storage Temperature Range
Lead temperature (Soldering)
−40 to 85
−55 to 125
Tsolder
260°C, 10s
∗Note 1: Applied to SON1408-3 at mounted on board
PD depends on conditions of mounting on board.
This specification is based on the measurement at the condition below:
∗Measurement Conditions
Environment: Mounted on board (Wind velocity 0m/s)
Board Material: FR-4 (2-layer)
Board dimensions: 40mm × 40mm × t1.6mm
Copper Area: 50%(Both Sides)
Tab pin (Pin 3) land pattern width is same as the lead, connected to the GND plane.
4
R3113D
ELECTRICAL CHARACTERISTICS
• R3113D121A/C
Topt=25°C
Symbol
−VDET
VHYS
Item
Conditions
Min.
Typ.
Max.
Unit
V
V
Detector Threshold
Detector Threshold Hysteresis
1.176 1.200 1.224
0.036 0.060 0.084
VDD= (−VDET)−0.1V
(−VDET)+1.0V
0.8
1.1
2.0
2.7
ISS
Supply Current
µA
VDDH
Maximum Operating Voltage
6
V
0.65
0.85
0.95
Topt=25°C
Note1
∗
VDDL
IOUT
V
Minimum Operating Voltage
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.85V
0.2
1.0
0.3
2.2
mA
Output Current
VDS=0.50V, VDD=1.10V
(Driver Output Pin)
Pch
mA
µs
2.0
5.0
VDS=−2.1V, VDD=4.5V
Note2
∗
tPLH
100
Output Delay Time
Detector Threshold
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
Temperature Coefficient
• R3113D181A/C
Topt=25°C
Symbol
−VDET
VHYS
Item
Detector Threshold
Detector Threshold Hysteresis
Conditions
Min.
Typ.
Max.
Unit
V
V
1.764 1.800 1.836
0.054 0.090 0.126
VDD= (−VDET)−0.1V
(−VDET)+1.0V
1.3
1.4
3.3
3.6
ISS
Supply Current
µA
VDDH
Maximum Operating Voltage
6
V
0.45
0.70
0.80
Topt=25°C
Note1
∗
VDDL
IOUT
V
Minimum Operating Voltage
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.70V
0.05
2.00
0.13
5.00
mA
Output Current
VDS=0.50V, VDD=1.50V
(Driver Output Pin)
Pch
mA
µs
2.0
5.0
VDS=−2.1V, VDD=4.5V
Note2
∗
tPLH
100
Output Delay Time
Detector Threshold
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
Temperature Coefficient
5
R3113D
• R3113D271A/C
Topt=25°C
Symbol
−VDET
VHYS
Item
Conditions
Min.
Typ.
Max.
Unit
V
V
Detector Threshold
Detector Threshold Hysteresis
2.646 2.700 2.754
0.081 0.135 0.189
VDD= (−VDET)−0.1V
(−VDET)+1.0V
1.3
1.4
3.3
3.6
ISS
Supply Current
µA
VDDH
Maximum Operating Voltage
6
V
0.45
0.70
0.80
Topt=25°C
Note1
∗
VDDL
IOUT
V
Minimum Operating Voltage
−40°C Topt 85°C
=
=
Nch
VDS=0.05V,VDD=0.70V
VDS=0.50V,VDD=1.50V
0.05
2.00
0.13
5.00
mA
Output Current
(Driver Output Pin)
Pch
mA
µs
2.0
5.0
VDS=−2.1V,VDD=4.5V
Note2
∗
tPLH
100
Output Delay Time
Detector Threshold
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
Temperature Coefficient
• R3113D361A/C
Topt=25°C
Symbol
−VDET
VHYS
Item
Detector Threshold
Detector Threshold Hysteresis
Conditions
Min.
Typ.
Max.
Unit
V
V
3.528 3.600 3.672
0.108 0.180 0.252
VDD= (−VDET)−0.1V
(−VDET)+1.0V
1.3
1.4
3.3
3.6
ISS
Supply Current
µA
VDDH
Maximum Operating Voltage
6
V
0.45
0.70
0.70
Topt=25°C
Note1
∗
VDDL
IOUT
V
Minimum Operating Voltage
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.70V
0.05
2.00
0.13
5.00
mA
Output Current
VDS=0.50V, VDD=1.50V
(Driver Output Pin)
Pch
mA
µs
2.0
5.0
VDS=−2.1V, VDD=4.5V
Note2
∗
tPLH
100
Output Delay Time
Detector Threshold
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
Temperature Coefficient
6
R3113D
• R3113D451A/C
Topt=25°C
Symbol
−VDET
VHYS
Item
Conditions
Min.
Typ.
Max.
Unit
V
V
Detector Threshold
Detector Threshold Hysteresis
4.410 4.500 4.590
0.135 0.225 0.315
VDD= (−VDET)−0.1V
(−VDET)+1.0V
1.3
1.4
3.3
3.6
ISS
Supply Current
µA
VDDH
Maximum Operating Voltage
6
V
0.45
0.70
0.80
Topt=25°C
Note1
∗
VDDL
IOUT
V
Minimum Operating Voltage
−40°C Topt 85°C
=
=
Nch
VDS=0.05V, VDD=0.70V
VDS=0.50V, VDD=1.50V
0.05
2.00
0.13
5.00
mA
Output Current
(Driver Output Pin)
Pch
mA
µs
2.5
6.0
VDS=−2.1V, VDD=6.0V
Note2
∗
tPLH
100
Output Delay Time
Detector Threshold
∆−VDET/∆T
−40°C Topt 85°C
±100
ppm/°C
=
=
Temperature Coefficient
∗Note1:The Minimum operating voltage means the value of input voltage when output voltage maintains 0.1V
or less. (In the case of Nch Open Drain Output type, the output pin is pulled up with a resistance of
470kΩ to 5.0V.)
∗Note2:In the case of CMOS Output type: The time interval between the rising edge of VDD input pulse from
0.85V to (+VDET) +1.0V and output voltage level becoming to VDD/2.
7
R3113D
ELECTRICAL CHARACTERISTICS BY DETECTOR THRESHOLD
• R3113D121x to R3113D451x
Detector Threshold
Detector Threshold
Supply Current 1
Supply Current 2
Hysteresis
Part
Number
VHYS[V]
ISS1[µA]
ISS2[µA]
−VDET[V]
Min
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
2.0
2.1
2.2
2.3
2.4
2.5
2.6
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.9
4.0
4.1
4.2
4.3
4.4
Typ.
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
4.000
4.100
4.200
4.300
4.400
4.500
Max.
1.224
1.326
1.428
1.530
1.632
1.734
1.836
1.938
2.040
2.142
2.244
2.346
2.448
2.550
2.652
2.754
2.856
2.958
3.060
3.162
3.264
3.366
3.468
3.570
3.672
3.774
3.876
3.978
4.080
4.182
4.284
4.386
4.488
4.590
Min.
Typ.
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
0.200
0.205
0.210
0.215
0.220
0.225
Max.
0.084
0.091
0.098
0.105
0.112
0.119
0.126
0.133
0.140
0.147
0.154
0.161
0.168
0.175
0.182
0.189
0.196
0.203
0.210
0.217
0.224
0.231
0.238
0.245
0.252
0.259
0.266
0.273
0.280
0.287
0.294
0.301
0.308
0.315
Condition
Typ.
Max.
Condition
Typ.
Max.
R3113D121x
R3113D131x
R3113D141x
R3113D151x
R3113D161x
R3113D171x
R3113D181x
R3113D191x
R3113D201x
R3113D211x
R3113D221x
R3113D231x
R3113D241x
R3113D251x
R3113D261x
R3113D271x
R3113D281x
R3113D291x
R3113D301x
R3113D311x
R3113D321x
R3113D331x
R3113D341x
R3113D351x
R3113D361x
R3113D371x
R3113D381x
R3113D391x
R3113D401x
R3113D411x
R3113D421x
R3113D431x
R3113D441x
R3113D451x
0.036
0.039
0.042
0.045
0.048
0.051
0.054
0.057
0.060
0.063
0.066
0.069
0.072
0.075
0.078
0.081
0.084
0.087
0.090
0.093
0.096
0.099
0.102
0.105
0.108
0.111
0.114
0.117
0.120
0.123
0.126
0.129
0.132
0.135
0.8
2.0
1.1
2.7
VDD=
VDD=
(−VDET)
+1.0V
(−VDET)
−0.10V
1.3
3.3
1.4
3.6
∗Note1:In the case of CMOS Output type: The time interval between the rising edge of VDD input pulse from
0.85V to (+VDET) +1.0V and output voltage level becoming to VDD/2.
Condition1: Topt=25°C
<
<
Condition2: −40°C Topt 85°C
=
=
∗Note2:The Minimum operating voltage means the value of input voltage when output voltage maintains 0.1V
or less. (In the case of Nch Open Drain Output type, the output pin is pulled up with a resistance of
470kΩ to 5.0V.)
8
R3113D
Detector Threshold
Temperature
Output Delay
Time
Output Current 1
IOUT1[mA]
Output Current 2
IOUT2[mA]
Minimum Operating Voltage
VDDL[V]
Coefficient
∆−VDET/∆T[ppm
/°C]
tPLH[µs]
Condition
Min. Typ.
Condition
Min. Typ.
Max.
Typ.
Max.
Conditio
Typ.
Nch
VDS=0.05V
VDD=0.85V
Note 2
Condition 1 0.65
Condition 2
Condition 1 0.85
Condition 2 0.95
VDD=
0.2 0.3
1.0 2.2
1.1V
Nch
VDS=
0.5V
−40°C
Note 2
=
Note 1
100
Note 2
Topt
±100
<
Nch
VDS=0.05V
VDD=0.7V
85°C
Condition 1
=
Condition 1
0.70
VDD=
0.05 0.13
2.0
5.0
0.45
1.5V
Condition 2
0.80
Condition 2
9
R3113D
OPERATION
V
DD
Ra
Pch
Nch
OUT
GND
Comparator
Rb
Rc
Vref
Figure 1. Block Diagram
1
2
3
4
5
Step
1
2
3
4
5
Comparator
B
I
II
III
IV
V
Released Voltage(+VDET
Supply Voltage Detector Threshold(-VDET
(VDD
)
Pin Input Voltage
Detector Threshold
Hysteresis
)
)
A
Comparator
H
L
Inde-finite
L
H
Output
Minimum Operating Voltage
GND
Tr.1
OFF ON Inde-finite ON OFF
ON OFF Inde-finite OFF ON
Pch
Output
Tr.
Output Voltage
(VOUT
Nch OFF ON Inde-finite ON OFF
)
Rb + Rc
× VDD
I.
Ra + Rb + Rc
GND
Rb
Ra + Rb
II.
× VDD
tPLH
Figure 2. Operation Diagram
Step 1. The output voltage is equal to the supply voltage (VDD).
>
Step 2. At Point “A”, Vref VDD×(Rb+Rc)/(Ra+Rb+Rc) is true, as a result, the output of comparator is reverse,
=
and output voltage becomes to GND level. The voltage level of Point A means detector threshold voltage,
or (−VDET).
Step 3. When the supply voltage is less than minimum operating voltage, the operation of output transistor
becomes indefinite, and in the case that output is pulled up to VDD, the output voltage equals to VDD
voltage.
Step 4. The output voltage equals to GND level.
>
Step 5. At Point “B”, Vref VDD×Rb/(Ra+Rb) is true, Output of the comparator is reverse, and output voltage is
=
equal to the supply voltage, or (VDD). The voltage level of Point B means released voltage, or (+VDET).
∗ The difference between released voltage and detector threshold voltage is the detector threshold hysteresis.
10
R3113D
TEST CIRCUITS
∗Pull-up circuit is not necessary for CMOS Output type, or R3113DxxxC.
ISS
5.0V
VDD
VDD
470kΩ
R3113D
R3113D
Series
VOUT
VIN
VIN
Series
OUT
OUT
GND
GND
Figure 3. Supply Current Test Circuit
Figure 4. Detector Threshold Test Circuit
VDD
VDD
VDS
IOUT
IOUT
R3113D
R3113D
Series
VIN
VIN
Series
OUT
OUT
GND
VDS
GND
VDD-|VDS|
Figure 5. Nch Driver Output Current Test Circuit
Figure 6. Pch Driver Output Current Test Circuit
∗Apply only to CMOS
(+VDET)+1.0V
Input
5.0V
0.85V
GND
Voltage
VDD
470kΩ
VOUT
R3113D
VIN
100%
Series
OUT
Output
Voltage
50%
GND
GND
PLH
t
Figure 7. Output Delay Time Test Circuit (1)
Figure 8. Output Delay Time Test Circuit (2)
11
R3113D
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
R3113D121C
R3113D271C
2.5
2.5
2.0
1.5
1.0
0.5
0.0
2.0
Topt=85°C
Topt=85°C
1.5
25°C
25°C
1.0
-40°C
-40°C
0.5
0.0
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
R3113D451C
2.0
1.5
1.0
0.5
0.0
Topt=85°C
25°C
-40°C
0
1
2
3
4
5
6
Input Voltage VIN(V)
2) Detector Threshold Hysteresis vs. Temperature
R3113D121C
R3113D271C
1.30
2.900
2.800
2.700
2.600
2.500
1.28
1.26
+VDET
-VDET
+VDET
1.24
1.22
1.20
-VDET
1.18
1.16
1.14
-60 -40 -20
0
20 40 60 80 100
-60 -40 -20
0
20 40 60 80 100
Temperature Topt(°C)
Temperature Topt(°C)
12
R3113D
R3113D451C
4.800
4.700
4.600
4.500
4.400
+VDET
-VDET
-50 -25
0
25
50
75
100
Temperature Topt(°C)
3) Output Voltage vs. Input Voltage
R3113D121C
R3113D121A
5V Pull-up 470kΩ
1.800
1.600
1.400
1.200
1.000
6.000
5.000
4.000
3.000
2.000
1.000
0.000
25°C
85°C
0.800
25°C
Topt=-40°C
85°C
0.600
Topt=-40°C
0.400
0.200
0.000
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Input Voltage VIN(V)
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6
Input Voltage VIN(V)
R3113D271C
R3113D271A
5V Pull-up 470kΩ
4.500
4.000
3.500
3.000
2.500
2.000
1.500
1.000
0.500
0.000
6.000
5.000
4.000
3.000
2.000
1.000
0.000
85°C
25°C
Topt=-40°C
85°C
25°C
Topt=-40°C
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0
Input Voltage VIN(V)
Input Voltage VIN(V)
13
R3113D
R3113D451C
R3113D451A
5V Pull-up 470kΩ
7.000
6.000
5.000
4.000
3.000
2.000
1.000
0.000
6.000
5.000
4.000
3.000
2.000
1.000
0.000
85°C
25°C
Topt=-40°C
85°C
25°C
Topt=-40°C
0.0
1.0
2.0
3.0
4.0
5.0
6.0
0.0
1.0
2.0
3.0
4.0
5.0
6.0
Input Voltage VIN(V)
Input Voltage VIN(V)
4) Nch Driver Output Current vs. VDS
R3113D121C
R3113D121C
Topt=25°C
Topt=25°C
900
800
700
600
500
400
300
200
100
0
400
350
300
250
200
150
100
50
V
DD=0.85V
VDD=0.8V
0.7V
0.7V
0
0.0
0.2
0.4
DS(V)
0.6
0.8
0.00
0.02
0.04
V
0.06
DS(V)
0.08
0.10
V
R3113D271C
R3113D271C
Topt=25°C
Topt=25°C
25
20
15
10
5
400
350
300
250
200
150
100
50
V
DD=2.5V
V
DD=0.8V
2.0V
0.7V
1.5V
0
0
0.0
0.5
1.0
V
1.5
DS(V)
2.0
2.5
0.00
0.02
0.04
V
0.06
DS(V)
0.08
0.10
14
R3113D
R3113D271C
R3113D271C
Topt=25°C
Topt=25°C
70
60
50
40
30
20
10
0
400
350
300
250
200
150
100
50
V
DD=4.5V
V
DD=0.8V
4.0V
3.5V
3.0V
2.5V
2.0V
1.5V
0.7V
0
0.0
1.0
2.0
3.0
4.0
0.00
0.02
0.04
V
0.06
DS(V)
0.08
0.10
VDS(V)
5) Nch Driver Output Current vs. Input Voltage
R3113D121C
R3113D271C
VDS=0.5V
VDS=0.5V
3.5
18.0
16.0
14.0
12.0
10.0
8.0
3.0
-40°C
-40°C
2.5
2.0
Topt=25°C
Topt=25°C
1.5
6.0
1.0
0.5
0.0
85°C
4.0
85°C
2.0
0.0
0.00
0.50
1.00
1.50
0.00 0.50 1.00 1.50 2.00 2.50 3.00
Input Voltage VIN(V)
Input Voltage VIN(V)
R3113D451C
VDS=0.5V
30.0
25.0
20.0
15.0
10.0
5.0
-40°C
Topt=25°C
85°C
0.0
0.00
1.00
2.00
3.00
4.00
5.00
Input Voltage VIN(V)
15
R3113D
6) Pch Driver Output Current vs. Input Voltage
R3113D121C
R3113D271C
Topt=25°C
Topt=25°C
3.0
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
2.5
VDS=0.7V
2.0
VDS=2.1V
1.5V
1.0V
1.5
0.5V
1.0
0.5
0.0
0.5V
0
1
2
3
4
5
6
0
1
2
3
4
5
6
Input Voltage VIN(V)
Input Voltage VIN(V)
R3113D451C
Topt=25°C
7.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
VDS=2.1V
1.5V
1.0V
0.5V
0
1
2
3
4
5
6
Input Voltage VIN(V)
7) Output Delay Time vs. Load Capacitance
R3113D121A
R3113D271A
100.00
100.00
10.00
1.00
10.00
t
PLH
t
PLH
1.00
0.10
0.01
0.00
0.10
tPHL
t
PHL
0.01
0.00
0.0001
0.001
0.01
0.1
0.0001
0.001
0.01
0.1
Output Pin External Capacitance COUT(µF)
Output Pin External Capacitance COUT(µF)
16
R3113D
R3113D451A
100.00
10.00
1.00
tPLH
0.10
tPHL
0.01
0.00
0.0001
0.001
0.01
0.1
Output Pin External Capacitance COUT(µF)
8) Output Delay Time vs. Input Pin Capacitance
R3113D121A
R3113D271A
100.00
100.00
10.00
1.00
10.00
1.00
t
PHL
t
PHL
0.10
0.01
0.00
0.10
tPLH
t
PLH
0.01
0.00
0.0001
0.001
0.01
0.1
0.0001
0.001
0.01
0.1
Input Pin External Capacitance CIN(µF)
Input Pin External Capacitance CIN(µF)
R3113D451A
100.00
10.00
1.00
t
PHL
0.10
tPLH
0.01
0.00
0.0001
0.001
0.01
0.1
Input Pin External Capacitance CIN(µF)
17
R3113D
TECHNICAL NOTES
VDD
VDD
VDD
OUT
VDD
OUT
GND
GND
Figure 9
Figure 10
1. In Figure 9, When R3113Dxx1C is used, and if an impedance is connected between Voltage Supplier
and the VDD Pin of R3113Dxx1C Series, the operation might be unstable by cross conduction current at
detection.
When R3113Dxx1A is used in Figure 9, if the value of R is set excessively large, voltage drop may occur
caused by supply current of IC itself and Detector threshold may vary.
2. Wiring as shown in Figure 10 may cause the oscillation in both output types of R3113 Series.
18
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