R3112Q441C-TR-FA [RICOH]
Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO4, SC-82AB, 4-PIN;
| 型号： | R3112Q441C-TR-FA |
| 厂家： | 
RICOH ELECTRONICS DEVICES DIVISION |
| 描述： | Power Supply Support Circuit, Fixed, 1 Channel, CMOS, PDSO4, SC-82AB, 4-PIN 光电二极管 |
| 文件： | 总21页 (文件大小：206K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
R3112x SERIES
LOW VOLTAGE DETECTOR WITH OUTPUT DELAY
NO. EA-087-090422
OUTLINE
The R3112x 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, resistor net for detector threshold setting,
an output driver, a hysteresis circuit, and an output delay 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.
Three types of packages, SOT-23-5, small SC-82AB, SC-88A and ultra-small SON1612-6 can be selected so
that high density mounting on boards is possible.
FEATURES
• Built-in Output Delay Circuit............................................... Typ. 100ms with an external capacitor: 0.022μF
• Supply Current................................................................... Typ. 0.5μA (R3112x271A/C, VDD=2.6V)
• Operating Voltage .............................................................. 0.7 to 6.0V(Topt=25°C)
• Detector Threshold............................................................. 0.9V to 5.0V
• High Accuracy Detector Threshold .................................... ±2.0%
• Low Temperature-Drift Coefficient of Detector Threshold...Typ. ±100ppm/°C
• Two Output Types.............................................................. Nch Open Drain and CMOS
• Packages ........................................................................... SOT-23-5(Mini-mold),SC-82AB, SC-88A,
SON1612-6
APPLICATIONS
• CPU and Logic Circuit Reset
• Battery Checker
• Window Comparator
• Wave Shaping Circuit
• Battery Back-up Circuit
• Power Failure Detector
1
R3112x
BLOCK DIAGRAMS
R3112xxx1A
R3112xxx1C
VDD
OUT
VDD
RD
RD
+
-
+
-
OUT
GND
Vref
Vref
GND
CD
CD
SELECTION GUIDE
The package type, the detector threshold, the output type, and the taping type of R3112x Series can be
designated at the users’ request by specifying the part number as follows;
R3112xxxxx-xx-x ← Part Number
↑ ↑ ↑↑
↑
↑
f
a b c d e
Code
Contents
Designation of Package Type;
R3112Dxx1x: SON1612-6
R3112Nxx1x: SOT-23-5
R3112Qxx1x: SC-82AB
R3112Qxx2x: SC-88A
a
Setting Detector Threshold (−VDET);
b
c
Stepwise setting with a step of 0.1V in the range of 0.9V to 5.0V is possible.
Designation of Package Type
1: except SC-88A
2: SC-88A
Designation of Output Type;
A: Nch Open Drain
C: CMOS
d
e
Designation of Packing or Taping Type;
Ex. SOT-23-5, SC-82AB, SC-88A, SON1612-6: TR is prescribed as standard
directions. (Refer to Taping Specifications)
Designation of Composition of pin plating;
-F: Lead free plating (SOT-23-5, SC-82AB, SC-88A, SON1612-6)
2
R3112x
PIN CONFIGURATION
ꢀSOT-23-5
ꢀSC-82AB
ꢀSC-88A
ꢀSON1612-6
5
4
6
5
4
4
3
5
4
(mark side)
(mark side)
(mark side)
1
2
3
1
2
3
1
2
3
1
2
PIN DESCRIPTION
• SOT-23-5
•SC-82AB
Pin No. Symbol
Pin No. Symbol
Description
Description
Voltage Supply Pin
Ground Pin
Output Pin (Output “L” at
detector threshold, Output “H”
at released voltage)
1
OUT
1
VDD
2
3
VDD
Voltage Supply Pin
2
3
GND
Pin for External Capacitor
(for setting output delay)
GND
Ground Pin
CD
Output Pin (Output “L” at
detector threshold, Output “H”
at released voltage)
4
NC
No Connection
4
OUT
Pin for External Capacitor
(for setting output delay)
5
CD
• SC-88A
•SON1612-6
Pin No. Symbol
Description
Pin No. Symbol
Description
Output Pin (Output “L” at
detector threshold, Output “H”
at released voltage)
1
VDD
Voltage Supply Pin
1
OUT
2
3
NC
No Connection
Ground Pin
2
3
GND
Ground Pin
Pin for External Capacitor
(for setting output delay)
GND
CD
Pin for External Capacitor
(for setting output delay)
4
5
CD
4
NC
No Connection
Output Pin (Output “L” at
detector threshold, Output “H”
at released voltage)
OUT
5
6
GND
Ground Pin
VDD
Voltage Supply Pin
3
R3112x
ABSOLUTE MAXIMUM RATINGS
Symbol
VDD
Item
Rating
Unit
V
Supply Voltage
6.5
VSS−0.3 to VDD+0.3
VSS−0.3 to 6.5
20
VOUT1
VOUT2
IOUT
Output Voltage (CMOS)
V
Output Voltage (Nch)
V
Output Current
mA
Power Dissipation (SOT-23-5)*
Power Dissipation (SC-82AB)*
Power Dissipation (SC-88A)*
Power Dissipation (SON1612-6)*
Operating Temperature Range
Storage Temperature Range
Lead temperature (Soldering)
420
380
PD
mW
380
500
Topt
Tstg
−40 to 85
−55 to 125
°C
°C
Tsolder
260°C, 10s
* ) For Power Dissipation, please refer to PACKAGE INFORMATION.
ABSOLUTE MAXIMUM RATINGS
Electronic and mechanical stress momentarily exceeded absolute maximum ratings may cause the
permanent damages and may degrade the life time and safety for both device and system using the device
in the field. The functional operation at or over these absolute maximum ratings is not assured.
4
R3112x
ELECTRICAL CHARACTERISTICS
• R3112x091A/C
Topt=25°C
Symbol
−VDET
VHYS
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
0.882 0.900 0.918
0.027 0.045 0.063
Detector Threshold Hysteresis
V
0.6
0.5
2.0
2.0
VDD=0.80V
ISS
Supply Current
μA
VDD=1.90V
VDDH
VDDL
Maximum Operating Voltage
6.0
V
V
0.70
0.80
Topt=25°C
Note1
Minimum Operating Voltage∗
−40°C Topt 85°C
=
=
Nch
10
120
μA
VDS=0.05V, VDD=0.70V
VDS=0.50V, VDD=0.85V
0.05
0.90
mA
IOUT
Output Current (Driver Output Pin)
Pch
1.0
3.5
mA
V
VDS=−2.1V, VDD=4.5V
VTCD
ICD
CD pin Threshold Voltage
CD pin Output Current
0.297 0.495 0.693
VDD=0.99V
2
70
VDS=0.10V, VDD=0.70V
VDS=0.50V, VDD=0.85V
μA
10
400
6.50
RD
Output Delay Resistance
3.25
13.00
MΩ
ppm/
°C
Δ−VDET/
ΔTopt
Detector Threshold
Temperature Coefficient
−40°C Topt 85°C
±100
=
=
RECOMMENDED OPERATING CONDITIONS (ELECTRICAL CHARACTERISTICS)
All of electronic equipment should be designed that the mounted semiconductor devices operate within the
recommended operating conditions. The semiconductor devices cannot operate normally over the
recommended operating conditions, even if when they are used over such conditions by momentary
electronic noise or surge. And the semiconductor devices may receive serious damage when they continue
to operate over the recommended operating conditions.
5
R3112x
• R3112x271A/C
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
2.646 2.700 2.754
−VDET
VHYS
Detector Threshold Hysteresis
0.081
0.189
3.0
V
1.0
0.5
VDD=2.60V
ISS
Supply Current
μA
2.5
VDD=3.70V
VDDH
VDDL
Maximum Operating Voltage
6.0
V
V
0.7
Topt=25°C
Note1
Minimum Operating Voltage∗
0.8
−40°C Topt 85°C
=
=
Nch
10
1.0
1.0
120
3.0
3.5
μA
mA
mA
VDS=0.05V,VDD=0.70V
IOUT
Output Current (Driver Output Pin)
VDS=0.50V,VDD=1.50V
Pch
VDS=−2.1V,VDD=4.5V
VTCD
ICD
CD pin Threshold Voltage
CD pin Output Current
0.891 1.485 2.079
V
VDD=2.97V
2
70
VDS=0.1V,VDD=0.7V
VDS=0.5V,VDD=1.5V
μA
200
3.25
500
6.50
RD
Output Delay Resistance
13.00
MΩ
ppm/
°C
Δ−VDET/
ΔTopt
Detector Threshold
Temperature Coefficient
−40°C Topt 85°C
±100
=
=
6
R3112x
• R3112x501A/C
Topt=25°C
Symbol
Item
Conditions
Min.
Typ.
Max.
Unit
V
Detector Threshold
4.900 5.000 5.100
0.150 0.250 0.350
−VDET
VHYS
Detector Threshold Hysteresis
V
1.5
0.6
3.0
2.5
6.0
0.7
0.8
VDD=4.9V
ISS
Supply Current
μA
VDD=6.0V
VDDH
VDDL
Maximum Operating Voltage
V
V
Topt=25°C
Note1
Minimum Operating Voltage∗
−40°C Topt 85°C
=
=
Nch
10
1.0
1.5
120
3.0
4.5
μA
mA
mA
V
VDS=0.05V,VDD=0.70V
Output Current
(Driver Output Pin)
IOUT
VDS=0.50V,VDD=1.50V
Pch
VDS=−2.1V,VDD=6.0V
VTCD
ICD
CD pin Threshold Voltage
CD pin Output Current
1.650 2.750 3.850
VDD=5.50V
2
70
VDS=0.1V, VDD=0.7V
VDS=0.5V, VDD=1.5V
μA
200
3.25
500
6.50
RD
Output Delay Resistance
13.00
MΩ
ppm/
°C
Δ−VDET/
ΔTopt
Detector Threshold
Temperature Coefficient
−40°C Topt 85°C
±100
=
=
∗Note1:Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or
less. (In the case of Nch Open Drain Type, Output pin is pulled up with a resistance of 470kΩ to 5.0V.)
7
R3112x
ELECTRICAL CHARACTERISTICS BY DETECTOR THRESHOLD
Detector
Threshold
Hysteresis
Range
Supply Current 1 Supply Current 2 Output Current 1
Output Current 2
Product Code
−VDET[V]
VHYS[V]
ISS1[μA]
ISS2[μA]
IOUT1[mA]
IOUT2[mA]
Condi-
tions
Condi-
tions
Condi-
tions
Min. Typ. Max. Min. Typ. Max.
Typ. Max.
Typ. Max.
Min. Typ. Conditions Min. Typ.
R3112x091A/C 0.882 0.900 0.918 0.027 0.045 0.063
R3112x101A/C 0.980 1.000 1.020 0.030 0.050 0.070
0.6
0.7
2.0
2.5
0.05
0.2
0.9
1.8
V
0.5V
DS=
0.5
2.0
R3112x111A/C 1.078 1.100 1.122 0.033 0.055 0.077
R3112x121A/C 1.176 1.200 1.224 0.036 0.060 0.084
R3112x131A/C 1.274 1.300 1.326 0.039 0.065 0.091
R3112x141A/C 1.372 1.400 1.428 0.042 0.070 0.098
R3112x151A/C 1.470 1.500 1.530 0.045 0.075 0.105
R3112x161A/C 1.568 1.600 1.632 0.048 0.080 0.112
R3112x171A/C 1.666 1.700 1.734 0.051 0.085 0.119
R3112x181A/C 1.764 1.800 1.836 0.054 0.090 0.126
R3112x191A/C 1.862 1.900 1.938 0.057 0.095 0.133
R3112x201A/C 1.960 2.000 2.040 0.060 0.100 0.140
R3112x211A/C 2.058 2.100 2.142 0.063 0.105 0.147
R3112x221A/C 2.156 2.200 2.244 0.066 0.110 0.154
R3112x231A/C 2.254 2.300 2.346 0.069 0.115 0.161
R3112x241A/C 2.352 2.400 2.448 0.072 0.120 0.168
R3112x251A/C 2.450 2.500 2.550 0.075 0.125 0.175
R3112x261A/C 2.548 2.600 2.652 0.078 0.130 0.182
R3112x271A/C 2.646 2.700 2.754 0.081 0.135 0.189
R3112x281A/C 2.744 2.800 2.856 0.084 0.140 0.196
R3112x291A/C 2.842 2.900 2.958 0.087 0.145 0.203
R3112x301A/C 2.940 3.000 3.060 0.090 0.150 0.210
R3112x311A/C 3.038 3.100 3.162 0.093 0.155 0.217
R3112x321A/C 3.136 3.200 3.264 0.096 0.160 0.224
R3112x331A/C 3.234 3.300 3.366 0.099 0.165 0.231
R3112x341A/C 3.332 3.400 3.468 0.102 0.170 0.238
R3112x351A/C 3.430 3.500 3.570 0.105 0.175 0.245
R3112x361A/C 3.528 3.600 3.672 0.108 0.180 0.252
R3112x371A/C 3.626 3.700 3.774 0.111 0.185 0.259
R3112x381A/C 3.724 3.800 3.876 0.114 0.190 0.266
R3112x391A/C 3.822 3.900 3.978 0.117 0.195 0.273
R3112x401A/C 3.920 4.000 4.080 0.120 0.200 0.280
R3112x411A/C 4.018 4.100 4.182 0.123 0.205 0.287
R3112x421A/C 4.116 4.200 4.284 0.126 0.210 0.294
R3112x431A/C 4.214 4.300 4.386 0.129 0.215 0.301
R3112x441A/C 4.312 4.400 4.488 0.132 0.220 0.308
R3112x451A/C 4.410 4.500 4.590 0.135 0.225 0.315
R3112x461A/C 4.508 4.600 4.692 0.138 0.230 0.322
R3112x471A/C 4.606 4.700 4.794 0.141 0.235 0.329
R3112x481A/C 4.704 4.800 4.896 0.144 0.240 0.336
R3112x491A/C 4.802 4.900 4.998 0.147 0.245 0.343
R3112x501A/C 4.900 5.000 5.100 0.150 0.250 0.350
VDD=
0.85V
1.0
3.0
0.5
2.5
V
DS=
0.05V
DD=
0.7V
V
DD
=
V
DD
=
−V
DET
−V
DET
0.01 0.12 Nch
V
−0.1V
+0.1V
VDS=
0.5V
1.0
3.0
VDD=
1.5V
1.2
3.0
0.6
2.5
1.5
3.0
0.6
2.5
8
R3112x
Detector
Threshold
Temperature
Minimum Operating
Voltage
CD pin Threshold
Voltage
CD pin Output CD pin Output Resistance for
Output Current 3
Current 1
Current 2
Output Delay
Δ−VDET/
ΔTopt
IOUT3[mA]
VDDL[V]
VTCD[V]
ICD1[μA]
ICD2[μA]
RD[MΩ]
[ppm/°C]
Condi-
tion
Condi-
tion
Condi-
tion
Condi-
tion
Condi-
tion
Condi-
Condition Min. Typ.
Max.
Max.
Min. Typ. Max.
0.297 0.495 0.693
0.330 0.550 0.770
Min. Typ.
Min. Typ. Min. Typ. Max.
Typ.
tion
VDS=
0.5V
VDD=
0.85V
10 400
0.363 0.605 0.847
0.396 0.660 0.924
0.429 0.715 1.001
0.462 0.770 1.078
0.495 0.825 1.155
0.528 0.880 1.232
0.561 0.935 1.309
0.594 0.990 1.386
0.627 1.045 1.463
0.660 1.100 1.540
0.693 1.155 1.617
0.726 1.210 1.694
0.759 1.265 1.771
0.792 1.320 1.848
0.825 1.375 1.925
0.858 1.430 2.002
0.891 1.485 2.079
0.924 1.540 2.156
0.957 1.595 2.233
0.990 1.650 2.310 0.7V
1.023 1.705 2.387
1.056 1.760 2.464
1.089 1.815 2.541
1.122 1.870 2.618
1.155 1.925 2.695
1.188 1.980 2.772
1.221 2.035 2.849
1.254 2.090 2.926
1.287 2.145 3.003
1.320 2.200 3.080
1.353 2.255 3.157
1.386 2.310 3.234
1.419 2.365 3.311
1.452 2.420 3.388
1.485 2.475 3.465
1.518 2.530 3.542
1.551 2.585 3.619
1.584 2.640 3.696
1.617 2.695 3.773
1.650 2.750 3.850
V =
0.5V
VDD=
DS
50 450
0.85V
V =
DS
−21V
1.5 3.5
VDD=
4.5V
−
40
°
C
−40°C
=
V =
0.1V
DS
<
V =
DD
=
Topt
=
Pch
0.7 Topt 0.8 (VDET
)
20
70
3.25 6.5 13.0 Topt ±100
25
°
C
VDD=
<
×
1.1V
=
=
85
°
C
85
°
C
VDS=
0.5V
VDD=
1.5V
200 500
VDS=
−2.1V
2.0 4.5
VDD=
6.0V
9
R3112x
OPERATION
V
DD
Ra
RD
Comparator
Pch
Nch
-
Schmitt Trigger
+
Current Source
O
UT
Tr.2
Rb
Rc
Tr.1
Vref
GND
Output Capacitor
CD
Fig. 1 Block Diagram with an external capacitor
1
2
3
4
5
Operation Status
1
2
II
H
3
II
4
II
H
5
I
Released Voltage +VDET
Detector Threshold -VDET
HYSTERESIS
RANGE
B
Compartor(-) Pin
Input Voltage
A
I
Compartor Output
L
Indefinite
L
Supply Voltage(VDD
)
Tr.1, 2
OFF ON Indefinite ON OFF
OFF ON Indefinite ON OFF
Minimum Operating
Voltge
VDDL
GND
Nch
Output Tr.
Pch ON OFF Indefinite OFF ON
Delay Time
Output Voltage(OUT)
Rb+Rc
Ra+Rb+Rc
I
V
DD
DD
Rb
Ra+Rb
II
V
GND
Fig. 2 Operation Diagram
1. Output voltage is equal to supply voltage. (As for Nch open drain type, equal to pull-up voltage.)
2. When the supply voltage is down to the detector threshold voltage level(Point A),
>
Vref VDD×(Rb+Rc)/(Ra+Rb+Rc) is true, then output of the comparator is reversed from “L” to “H”, therefore
=
output voltage becomes GND level.
3. When the supply voltage is lower than minimum operating voltage, the operation of output transistor is
indefinite. In the case of Nch open drain type, output voltage is equal to pull-up voltage.
4. Output Voltage becomes GND level.
5. When the supply voltage is higher than released voltage (Point B), Vref VDD×Rb/(Ra+Rb) is true, then
=
output of the comparator reaches the threshold level, and Output of Shmitt Trigger is reversed from “H” to
“L”, then output voltage is equal to supply voltage. (As for Nch open drain type, equal to pull-up voltage.)
∗) The difference between released voltage and detector threshold voltage means hysteresis range voltage.
10
R3112x
• Operation of Output Delay
Released Voltage (+VDET
)
Supply Voltage
CD Pin Threshold Voltage (VTCD)
Capacitor Voltage
Output Voltage
GND
GND
Output Delay Time(tD)
When the supply voltage which is higher than released voltage is forced to VDD pin, charge to an external
capacitor starts, then capacitor voltage increases. Until the capacitor voltage reaches to CD Pin threshold voltage,
output voltage maintains “L”. When the capacitor voltage becomes higher than CD pin threshold voltage, output
voltage is reversed from "L” to "H". Where, the time interval between the rising edge of supply voltage and output
voltage reverse point means output delay time.
• Output Delay Time
Output Delay Time (tD) can be calculated with the next formula.
tD=0.69×RD×CD(s)
RD is internal resistor and set at 6.5MΩ(Typ.) typically. CD(F) describes the capacitance value of an external
capacitor. Therefore,
tD=0.69×6.5×106×CD(s)
11
R3112x
TEST CIRCUITS
∗Pull-up circuit is not necessary for CMOS Output type, or R3112xxxxC.
I
SS
+5V or VDD
V
DD
VDD
470kΩ
V
IN
VIN
R3112x
R3112x
OUT
GND
GND
Supply Current Test Circuit
Detector Threshold Test Circuit
V
DD
VDD
I
OUT
IOUT
V
IN
VIN
R3112x
R3112x
OUT
OUT
V
DS
VDD+VDS
GND
GND
Nch Driver Output Current Test Circuit
Pch Driver Output Current Test Circuit
∗Apply only to CMOS
+5V or VDD
V
DD
VDD
470kΩ
I
CD
CD
CD
V
IN
VIN
R3112x
R3112x
OUT
V
DS
VDS
GND
GND
CD Pin Threshold Test Circuit
CD Pin Output Current Test Circuit
+VDET+2.0 or 0.6V
Input
Voltage
0.7V
+5V
GND
VDD
470kΩ
100%
CD
V
IN
R3112x
O
UT
Output Voltage 50%
GND
CD
GND
Output Delay Time Test Circuit
12
R3112x
TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage
R3112x091x
R3112x131x
1.5
1.5
1.2
1.2
0.9
0.6
0.3
0
Topt=85°C
Topt=85°C
-40°C
25°C
0.9
0.6
0.3
0
25°C
-40°C
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Input Voltage VIN(V)
Input Voltage VIN(V)
R3112x271x
R3112x451x
1.5
2.0
1.2
0.9
0.6
0.3
0
1.6
1.2
0.8
0.4
0
25°C
25°C
Topt=85°C
-40°C
Topt=85°C
-40°C
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Input Voltage VIN(V)
Input Voltage VIN(V)
2) Detector Threshold vs. Temperature
R3112x091x
R3112x131x
0.98
1.42
1.40
1.38
1.36
1.34
1.32
1.30
1.28
1.26
0.96
+VDET
+VDET
0.94
0.92
0.90
0.88
0.86
-VDET
-VDET
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(°C)
Temperature Topt(°C)
13
R3112x
R3112x271x
R3112x451x
2.90
2.85
2.80
2.75
2.70
2.65
2.60
4.75
4.70
4.65
4.60
4.55
4.50
4.45
4.40
4.35
+VDET
-VDET
75
+VDET
-VDET
-50
-25
0
25
50
75
100
-50
-25
0
25
50
100
Temperature Topt(°C)
Temperature Topt(°C)
3) Output Voltage vs. Input Voltage
R3112x091x
R3112x091A
Nch Output Type: VDD pull up
5V pull up via 470kΩ
1.0
6.0
Topt=-40°C
25°C
5.0
4.0
3.0
2.0
1.0
0.0
0.8
0.6
0.4
0.2
0.0
85°C
Topt=-40°C
25°C
85°C
0
0.2
0.4
0.6
0.8
1
0
0.2
0.4
0.6
0.8
1
Input Voltage VIN(V)
Input Voltage VIN(V)
R3112x131x
R3112x131A
Nch Output Type: VDD pull up
5V pull up via 470kΩ
1.5
6.0
Topt=-40°C
5.0
4.0
3.0
2.0
1.0
0.0
1.2
0.9
0.6
0.3
0
25°C
85°C
Topt=-40°C
25°C
85°C
0
0.3
0.6
0.9
1.2
1.5
0
0.3
0.6
0.9
1.2
1.5
Input Voltage VIN(V)
Input Voltage VIN(V)
14
R3112x
R3112x271x
R3112x271A
Nch Output Type: VDD pull up
5V pull up via 470kΩ
3.0
2.5
2.0
1.5
1.0
0.5
0.0
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Topt=-40°C
25°C
85°C
Topt=-40°C
25°C
85°C
0.0
0.5
1.0
1.5
2.0
2.5
3.0
0.0
0.5
1.0
1.5
2.0
2.5
3.0
Input Voltage VIN(V)
Input Voltage VIN(V)
R3112x451x
R3112x451A
Nch Output Type: VDD pull up
5V pull up via 470kΩ
5.0
4.5
6.0
5.0
4.0
3.0
2.0
1.0
0.0
Topt=-40°C
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.0
25°C
85°C
Topt=-40°C
25°C
85°C
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Input Voltage VIN(V)
Input Voltage VIN(V)
4) Nch Driver Output Current vs. VDS
R3112x091x
R3112x131x
Topt=25°C
DD=0.85V
Topt=25°C
1.2
2.5
2.0
V
V
DD=1.0V
1.0
0.8
0.6
0.4
0.2
0
1.5
1.0
0.5
0
0.85V
0.7V
0.6
0.7V
0.6
0
0.2
0.4
V
0.8
1
0
0.2
0.4
V
0.8
1
DS(V)
DS(V)
15
R3112x
R3112x271x
R3112x451x
Topt=25°C
Topt=25°C
20
16
20
16
V
DD=4.0V
V
DD=3.0V
V
DD=2.5V
V
DD=3.5V
V
DD=2.5V
2.0V
2.0V
12
8
12
8
1.5V
1.5V
4
4
1.0V
1.0V
1.5
0
0
0
0.5
1
1.5
DS(V)
2
2.5
0
0.5
1
2
2.5
3
3.5
4
V
VDS(V)
5) Nch Driver Output Current vs. Input Voltage
R3112x091x
R3112x131x
2.0
5
4
1.5
Topt=-40°C
3
2
1
0
25°C
1.0
Topt=25°C
85°C
0.5
85°C
-40°C
0.0
0
0.2
0.4
0.6
0.8
1
0
0.3
0.6
0.9
1.2
1.5
Input Voltage VIN(V)
Input Voltage VIN(V)
R3112x271x
R3112x451x
5
5
Topt=-40°C
Topt=-40°C
85°C
25°C
4
3
2
1
0
4
3
2
1
0
25°C
85°C
0
0.5
1
1.5
2
2.5
3
0
1
2
3
4
5
Input Voltage VIN(V)
Input Voltage VIN(V)
16
R3112x
6) Pch Driver Output Current vs. Input Voltage
R3112x091C
R3112x131C
Topt=25°C
Topt=25°C
6
5
4
3
2
1
0
6
5
4
3
2
1
0
V
DS=-2.1V
V
DS=-2.1V
-1.5V
-1.0V
-1.5V
-1.0V
-0.5V
6
-0.5V
6
0
1
2
3
4
5
7
0
1
2
3
4
5
7
Input Voltage VIN(V)
Input Voltage VIN(V)
R3112x271C
R3112x451C
Topt=25°C
Topt=25°C
6
5
4
3
2
1
0
6
5
4
3
2
1
0
V
DS=-2.1V
V
DS=-2.1V
-1.5V
-1.0V
-1.5V
-1.0V
-0.5V
6
-0.5V
6
0
1
2
3
4
5
7
0
1
2
3
4
5
7
Input Voltage VIN(V)
Input Voltage VIN(V)
7) CD Pin Threshold Voltage vs. Temperature
R3112x091x
R3112x131x
V
DD=0.99V
V
DD=1.43V
0.8
0.7
0.6
0.5
0.4
0.3
0.2
1.0
0.9
0.8
0.7
0.6
0.5
0.4
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(°C)
Temperature Topt(°C)
17
R3112x
R3112x271x
R3112x451x
V
DD=2.97V
VDD=4.95V
1.9
1.8
1.7
1.6
1.5
1.4
1.3
2.9
2.8
2.7
2.6
2.5
2.4
2.3
-50
-25
0
25
50
75
100
-50
-25
0
25
50
75
100
Temperature Topt(°C)
Temperature Topt(°C)
8) CD Pin Output Current vs. Input Voltage
R3112x091x
R3112x131x
V
DS=0.5V
V
DS=0.5V
1.0
0.8
1.0
0.8
Topt=-40°C
Topt=-40°C
0.6
0.4
0.2
0
0.6
0.4
0.2
0
25°C
25°C
85°C
85°C
0
0.2
0.4
0.6
0.8
1
0
0.3
0.6
0.9
1.2
1.5
Input Voltage VIN(V)
Input Voltage VIN(V)
R3112x271x
R3112x451x
V
DS=0.5V
VDS=0.5V
1.0
0.8
1.0
0.8
Topt=-40°C
25°C
Topt=-40°C
25°C
0.6
0.4
0.2
0
0.6
0.4
0.2
0
85°C
85°C
0
0.5
1
1.5
2
2.5
3
0
1
2
3
4
5
Input Voltage VIN(V)
Input Voltage VIN(V)
18
R3112x
9) CD Pin Output Current vs. VDS (Topt=25°C)
R3112x091x
R3112x131x
Topt=25°C
Topt=25°C
DD=1.0V
0.7
1.0
V
0.9
0.8
0.7
0.6
V
DD=0.85V
0.6
0.5
0.4
0.3
0.2
0.1
0
0.5
0.4
0.3
0.2
0.1
0
0.85V
0.8
0.7V
0.7V
0
0.2
0.4
0.6
DS(V)
0.8
1
0
0.2
0.4
0.6
DS(V)
1
V
V
R3112x271x
R3112x451x
Topt=25°C
DD=2.5V
Topt=25°C
3.0
2.5
2.0
1.5
1.0
0.5
4.5
V
DD=4.0V
V
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
3.5V
3.0V
2.0V
2.5V
1.5V
2.0V
1.5V
2
1.0V
1.0V
1.5
0
0
0.5
1
1.5
DS(V)
2
2.5
0
0.5
1
2.5
3
3.5
4
V
VDS(V)
10) Output Delay Time vs. External Capacitance (Topt=25°C)
R3112x091x
R3112x131x
Topt=25°C
Topt=25°C
1000
1000
100
10
100
t
D
t
D
10
1
1
0.1
0.1
t
PHL
t
PHL
0.01
0.0001
0.01
0.0001
0.001
0.01
0.1
0.001
0.01
0.1
External Capacitance C
D(μF)
External Capacitance CD(μF)
19
R3112x
R3112x271x
R3112x451x
Topt=25°C
Topt=25°C
1000
1000
100
10
100
10
t
D
t
D
1
1
0.1
0.1
t
PHL
tPHL
0.01
0.0001
0.01
0.0001
0.001
0.01
0.1
0.001
0.01
0.1
External Capacitance C
D(μF)
External Capacitance C (μF)
D
11) Delay Circuit Resistance vs. Temperature
R3112xxx1x
13
12
11
10
9
8
7
6
5
4
3
-50
-25
0
25
50
75
100
Temperature Topt(°C)
20
R3112x
TECHNICAL NOTES
V
DD
V
DD
DD
V
DD
DD
R
R1
R1
V
V
R2
V
DD
R2
R3112x
R3112x
R3112x
OUT
OUT
OUT
GND
GND
GND
Figure A
Figure B
Figure C
When R3112xxx1A (Nch open drain output type) is used in Figure A or Figure B, if impedance of voltage
supply pIn, VDD and VDD of this IC is large, detector threshold level would shift by voltage dropdown caused by
the consumption current of the IC itself. Released voltage may also shift and delay time for start-up might be
generated by this usage.
When R3112xxx1C (CMOS output type) is used in Figure A or Figure B, Output level could be unstable by
cross conduction current which is generated at detector threshold level or at released voltage level, therefore, do
not use R3112xxx1C with the connection in Figure A or Figure B.
The connection in Figure C may cause the oscillation in both R3112xxx1C (CMOS Output) and R3112xxx1A
(Nch Open Drain Output), therefore do not use R3112xxx1x Series with the connection in Figure C.
21
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