RICOH R3111Q411C

’98.Dec.05
LOW VOLTAGE DETECTOR
R3111xxx1A/C Series
■ OUTLINE
The R3111 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 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.
The R3111 Series are operable at a lower voltage than that for the RX5VL Series, and can be driven by a single battery.
Four types of packages, TO-92, SOT-89, SOT-23-5 and SC-82AB are available.
■ FEATURES
●
●
●
●
●
●
●
Ultra-low Supply Current............................................................... TYP. 0.8µA (VDD=1.5V)
Wide Range of Operating Voltage.................................................. 0.7 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.
High Accuracy Detector Threshold................................................ ±2.0%
Low Temperature-Drift Coefficient of Detector Threshold............ TYP. ±100ppm/°C
Two Output Types .......................................................................... Nch Open Drain and CMOS
Four Types of Packages.................................................................. TO-92, SOT-89(Mini-power Mold), SOT-23-5 (Minimold), SC-82AB
■ APPLICATIONS
●
●
●
●
●
●
CPU and Logic Circuit Reset
Battery Checker
Window Comparator
Wave Shaping Circuit
Battery Back-up Circuit
Power Failure Detector
■ BLOCK DIAGRAMS
R3111XXX1A
R3111XXX1C
VDD
VDD
OUT
OUT
Vref
Vref
GND
Rev.1.10
GND
-1-
■ TIMING CHART
Release Voltage +VDET
Supply Voltage Detector Threshold -VDET
(VDD)
Minimum Operating Voltage
VSS
Detector Threshold
Hysteresis
Output Voltage
(OUT)
VSS
tPLH
■ 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 0.7V to (+VDET)+ 2.0V 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 0.7V to (+VDET)+ 2.0V and becoming of the output voltage to
(VDD/2) V.
+VDET + 2.0V
+VDET + 2.0V
Input Voltage
(VDD)
Input Voltage
(VDD)
0.7V
0.7V
GND
GND
5.0V
+VDET+2.0V
2.5V
Output Voltage
+VDET+2.0V
2
Output Voltage
GND
GND
tPHL
tPLH
tPHL
Nch Open Drain Output
Rev.1.10
CMOS Output
-2-
tPLH
■ SELECTION GUIDE
The package type, the detector threshold, the output type and the taping type of R3111 Series can be designated at the users’
request by specifying the part number as follows;
R3111×××1×-×× ←Part Number
↑↑ ↑ ↑
a b c d
Code
a
b
c
d
Rev.1.10
Contents
Designation of Package Type;
E: TO-92
Q: SC-82AB
H: SOT-89
N: SOT-23-5
Setting Detector Threshold (-VDET);
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
Designation of Packing or Taping Type ;
Ex.TO-92: TZ, SOT-89: T1,
SOT-23-5, SC-82AB: TR are prescribed as standard directions.
(Refer to Taping Specifications.) Antistatic bag for samples: C
-3-
■ PIN CONFIGURATION
●
●
TO-92
●
SOT-89
●
SOT-23-5
5
SC-82AB
4
4
3
(mark side)
(mark side)
(mark side)
1
(mark side)
1
1
2
2
1
3
2
2
3
3
■ PIN DESCRIPTION
●
TO-92
Pin No.
Symbol
1
VDD
2
GND
3
OUT
●
●
SOT-89
Pin No.
Symbol
1
OUT
2
VDD
3
GND
SOT-23-5
Pin No.
Symbol
1
OUT
2
VDD
3
GND
4
NC
5
NC
●
SC-2AB
Pin No.
Symbol
1
OUT
2
VDD
3
NC
4
GND
■ ABSOLUTE MAXIMUM RATINGS
Symbol
VDD
VOUT1
VOUT2
IOUT
PD
PD
Item
Supply Voltage
Output Voltage (CMOS)
Output Voltage (Nch)
Output Current
Power Dissipation 1*Note1
Power Dissipation 2*Note2
Operating Temperature
Topt
Range
Storage Temperature
Tstg
Range
Lead temperature
Tsolder
(Soldering)
*Note 1: applied to SOT-89 and TO-92
*Note 2: applied to SOT-23-5 and SC-82AB
Rev.1.10
-4-
Rating
12
VSS-0.3 to VDD+0.3
VSS-0.3 to 12
70
300
150
Unit
V
V
V
mA
mW
mW
-40 to 85
°C
-55 to 125
°C
260°C, 10s
■ ELECTRICAL CHARACTERISTICS
●
R3111x091A/C
Symbol
Item
-VDET
Detector Threshold
VHYS
Detector Threshold Hysteresis
Supply Current
VDDH
Maximum Operating Voltage
Minimum Operating
Voltage*Note1
IOUT
tPLH
∆-VDET/∆T
●
Output Current
(Driver Output Pin)
Output Delay Time*Note2
Detector Threshold Temperature
Coefficient
R3111x181A/C
Symbol
Item
-VDET
Detector Threshold
VHYS
Detector Threshold Hysteresis
Supply Current
VDDH
Maximum Operating Voltage
Minimum Operating
Voltage*Note1
IOUT
tPLH
∆-VDET/∆T
Rev.1.10
Topt=25°C
-40°C≤Topt≤85°C
Nch
VDS=0.05V,VDD=0.70V
VDS=0.50V,VDD=0.85V
Pch
VDS=-2.1V,VDD=4.5V
Output Current
(Driver Output Pin)
TYP.
0.900
0.045
0.8
0.9
0.55
0.65
0.01
0.05
0.05
0.50
1.0
2.0
Conditions
MIN.
1.764
0.054
Topt=25°C
-40°C≤Topt≤85°C
Nch
VDS=0.05V,VDD=0.70V
VDS=0.50V,VDD=0.85V
Pch
VDS=-2.1V,VDD=4.5V
TYP.
1.800
0.090
0.8
1.0
0.55
0.65
0.01
1.00
0.05
2.00
1.0
2.0
-5-
±100
µA
V
V
mA
µs
ppm/°C
MAX.
1.836
0.126
2.4
3.0
10
0.70
0.80
Topt=25°C
Unit
V
V
µA
V
V
mA
mA
100
-40°C≤Topt≤85°C
Topt=25°C
Unit
V
V
mA
±100
-40°C≤Topt≤85°C
Note2
Output Delay Time*
Detector Threshold Temperature
Coefficient
MAX.
0.918
0.063
2.4
2.7
10
0.70
0.80
100
VDD=1.70V
3.80V
ISS
VDDL
MIN.
0.882
0.027
VDD=0.80V
2.90V
ISS
VDDL
Conditions
µs
ppm/°C
●
R3111x271A/C
Symbol
Item
-VDET
Detector Threshold
VHYS
Detector Threshold Hysteresis
Supply Current
VDDH
Maximum Operating Voltage
Minimum Operating
Voltage*Note1
IOUT
tPLH
∆-VDET/∆T
●
Output Current
(Driver Output Pin)
Output Delay Time*
Detector Threshold Temperature
Coefficient
ISS
Supply Current
VDDH
Maximum Operating Voltage
Minimum Operating
Voltage*Note1
IOUT
tPLH
∆-VDET/∆T
Rev.1.10
Topt=25°C
-40°C≤Topt≤85°C
Nch
VDS=0.05V,VDD=0.70V
VDS=0.50V,VDD=1.50V
Pch
VDS=-2.1V,VDD=4.5V
TYP.
2.700
0.135
0.9
1.1
0.55
0.65
0.01
1.00
0.05
2.00
1.0
2.0
Note2
R3111x361A/C
Symbol
Item
-VDET
Detector Threshold
VHYS
Detector Threshold Hysteresis
VDDL
MIN.
2.646
0.081
VDD=2.60V
4.70V
ISS
VDDL
Conditions
Output Current
(Driver Output Pin)
Output Delay Time*Note2
Detector Threshold Temperature
Coefficient
MAX.
2.754
0.189
2.7
3.3
10
0.70
0.80
Conditions
VDD=3.47V
5.60V
Topt=25°C
-40°C≤Topt≤85°C
Nch
VDS=0.05V,VDD=0.70V
VDS=0.50V,VDD=1.50V
Pch
VDS=-2.1V,VDD=4.5V
TYP.
3.600
0.180
1.0
1.2
0.55
0.65
0.01
1.00
0.05
2.00
1.0
2.0
-6-
±100
V
µs
ppm/°C
MAX.
3.672
0.252
3.0
3.6
10
0.70
0.80
Topt=25°C
Unit
V
V
µA
V
V
mA
mA
100
-40°C≤Topt≤85°C
V
mA
±100
MIN.
3.528
0.108
µA
mA
100
-40°C≤Topt≤85°C
Topt=25°C
Unit
V
V
µs
ppm/°C
●
R3111x451A/C
Symbol
Item
-VDET
Detector Threshold
VHYS
Detector Threshold Hysteresis
Supply Current
VDDH
Maximum Operating Voltage
Minimum Operating
Voltage*Note1
IOUT
tPLH
∆-VDET/∆T
●
Output Current
(Driver Output Pin)
Output Delay Time*
Detector Threshold Temperature
Coefficient
ISS
Supply Current
VDDH
Maximum Operating Voltage
Minimum Operating
Voltage*Note1
IOUT
Topt=25°C
-40°C≤Topt≤85°C
Nch
VDS=0.05V,VDD=0.70V
VDS=0.50V,VDD=1.50V
Pch
VDS=-2.1V,VDD=8.0V
TYP.
4.500
0.225
1.1
1.3
0.55
0.65
0.01
1.00
0.05
2.00
1.5
3.0
Note2
R3111x541A/C
Symbol
Item
-VDET
Detector Threshold
VHYS
Detector Threshold Hysteresis
VDDL
MIN.
4.410
0.135
VDD=4.34V
6.50V
ISS
VDDL
Conditions
Output Current
(Driver Output Pin)
MAX.
4.590
0.315
3.3
3.9
10
0.70
0.80
Conditions
VDD=5.20V
7.40V
Topt=25°C
-40°C≤Topt≤85°C
Nch
VDS=0.05V,VDD=0.70V
VDS=0.50V,VDD=1.50V
Pch
VDS=-2.1V,VDD=8.0V
TYP.
5.400
0.270
1.2
1.4
0.55
0.65
0.01
1.00
0.05
2.00
1.5
3.0
V
V
mA
±100
MIN.
5.292
0.162
µA
mA
100
-40°C≤Topt≤85°C
Topt=25°C
Unit
V
V
µs
ppm/°C
MAX.
5.508
0.378
3.6
4.2
10
0.70
0.80
Topt=25°C
Unit
V
V
µA
V
V
mA
mA
Output Delay Time*Note2
100
µs
Detector Threshold Temperature
∆-VDET/∆T
-40°C≤Topt≤85°C
±100
ppm/°C
Coefficient
*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.)
*Note2: In the case of CMOS Output Type: The time interval between the rising edge of VDD input pulse from 0.7V to
(+VDET)+2.0V and output voltage level becoming to VDD/2.
In the case of Nch Open Drain Output Type: Output pin is pulled up with a resistance of 470kΩ to 5.0V, The
time interval between the rising edge of VDD input pulse from 0.7V to (+VDET)+2.0V and output voltage level
becoming to 2.5V.
tPLH
Rev.1.10
-7-
■ ELECTRICAL CHARACTERISRICS BY DETECTOR THRESHOLD
●
R3111x09x to R3111x60x
Detector Threshold
Detector Threshold
Hysteresis
Supply Current 1
Supply Current 2
-VDET[V]
VHYS[V]
ISS1[µA]
ISS2[µA]
Part
Number
R3111x091x
R3111x101x
R3111x111x
R3111x121x
R3111x131x
R3111x141x
R3111x151x
R3111x161x
R3111x171x
R3111x181x
R3111x191x
R3111x201x
R3111x211x
R3111x221x
R3111x231x
R3111x241x
R3111x251x
R3111x261x
R3111x271x
R3111x281x
R3111x291x
R3111x301x
R3111x311x
R3111x321x
R3111x331x
R3111x341x
R3111x351x
R3111x361x
R3111x371x
R3111x381x
R3111x391x
R3111x401x
R3111x411x
R3111x421x
R3111x431x
R3111x441x
R3111x451x
R3111x461x
R3111x471x
R3111x481x
R3111x491x
R3111x501x
R3111x511x
R3111x521x
R3111x531x
R3111x541x
R3111x551x
R3111x561x
R3111x571x
R3111x581x
R3111x591x
R3111x601x
MIN.
0.882
0.980
1.078
1.176
1.274
1.372
1.470
1.568
1.666
1.764
1.862
1.960
2.058
2.156
2.254
2.352
2.450
2.548
2.646
2.744
2.842
2.940
3.038
3.136
3.234
3.332
3.430
3.528
3.626
3.724
3.822
3.920
4.018
4.116
4.214
4.312
4.410
4.508
4.606
4.704
4.802
4.900
4.998
5.096
5.194
5.292
5.390
5.488
5.586
5.684
5.782
5.880
TYP.
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
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
MAX.
0.918
1.020
1.122
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
4.692
4.794
4.896
4.998
5.100
5.202
5.304
5.406
5.508
5.610
5.712
5.814
5.916
6.018
6.120
MIN.
0.027
0.030
0.033
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
0.138
0.141
0.144
0.147
0.150
0.153
0.156
0.159
0.162
0.165
0.168
0.171
0.174
0.177
0.180
TYP.
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
0.200
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
MAX.
0.063
0.070
0.077
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
0.322
0.329
0.336
0.343
0.350
0.357
0.364
0.371
0.378
0.385
0.392
0.399
0.406
0.413
0.420
Condition
TYP.
MAX.
0.8
2.4
0.9
2.7
VDD=
(-VDET)
-0.13V
1.0
3.0
VDD=
(-VDET)
-0.16V
1.1
VDD=
(-VDET)
-0.20V
1.2
Condition
TYP.
0.9
MAX.
2.7
1.0
3.0
1.1
3.3
1.2
3.6
3.3
1.3
3.9
3.6
1.4
4.2
VDD=
(-VDET)
-0.10V
VDD=
(-VDET)
+2.0V
Note 1:In the case of CMOS Output parts; when the voltage is forced to VDD from 0.7V to (+VDET)+2.0V, time interval between the rising edge of VDD and
the reaching point at 50% of Output Voltage. In the case of Nch open Drain Output parts : Output pin is pulled up to 5V through 470kΩ,and when
the voltage is forced to VDD from 0.7V to (+VDET)+2.0V, time interval between the rising edge of VDD and the reaching point ar 50% of Output
Voltage.
Note 2:VDD value when Output Voltage is equal or less than 0.1V. In the case of Nch Open Drain Output parts, Output pin is pulled up to 5V through
470kΩ resistor.
Condition 1: Topt=25°C
Condition 2: -40°C≤Topt≤85°C
Rev.1.10
-8-
Output Current 1
Output Current 2
Output Delay
Time
Minim um O perating
Voltage
Detector Threshold
Tem perature Coefficient
IOUT1[mA]
IOUT2[mA]
tPLH[µs]
VDDL[V]
∆ VDET/∆T[ppm/°C]
Condition
MIN.
TYP.
Condition
VDD=
0.85V
VDD=
1.0V
Nch
VDS=0.05V
VDD=0.7V
0.01
0.05
TYP.
0.05
0.5
0.2
MAX.
Note 1
100
1.0
TYP.
MAX.
Note 2
Note 2
Condition 1
0.55
Condition 1
0.70
Condition 2
0.65
Condition 2
0.80
Condition
TYP.
-40°C≤
Topt
≤85°C
±100
1.0
Nch
VDS=
0.5V
VDD=
1.5V
Rev.1.10
MIN.
2.0
-9-
■ OPERATION
VDD
Ra
Pch
OUT
Comparator
Rb
Nch
Vref
Rc
GND
Figure 1. Block Diagram
1
Supply Voltage
(VDD)
2
3
4
5
B
Released Voltage(+VDET)
Detector Threshold(-VDET)
A
Detector Threshold
Hysteresis
Step
Comparator
Pin Input Voltage
1
2
3
4
5
I
II
III
IV
V
Comparator Output
H
L
L
H
OFF
ON
ON
OFF
Pch
ON
OFF
OFF
ON
Nch
OFF
ON
ON
OFF
Tr.1
Minimum Operating Voltage
GND
Output Tr.
Output Voltage
(VOUT)
I.
II.
GND
Indefinite
Indefinite
Indefinite
Indefinite
Rb + Rc
VDD
Ra + Rb + Rc
Rb
VDD
Ra + Rb
tPLH
Figure 2. Operation Diagram
Step 1.
Step 2.
Output Voltage is equal to Supply Voltage (VDD).
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, Output voltage equals to VDD voltage.
Step 4. 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 Detector Threshold Hysteresis.
Rev.1.10
- 10 -
■ TEST CIRCUITS
5.0V
ISS
VDD
470K
VDD
R3111X
Series
VIN
R3111X
Series
VIN
VOUT
OUT
OUT
GND
GND
*Pull-up circuit is not necessary for
CMOS Output type, or R3111XXXXC.
Figure 3. Supply Current Test Circuit
Figure 4. Detector Threshold Test Circuit
VIN
VDS
VDD
VDD
IOUT
IOUT
R3111X
Series
R3111X
Series
VIN
OUT
OUT
VDD- VDS
VDS
GND
GND
*Apply only to CMOS
Figure 5. Nch Driver Output Current Test Circuit
Figure 6. Pch Driver Output Current Test Circuit
+5.0V
+VDET+2.0V
0.7V
VSS
VDD
P.G.
GND
+VDET+2.0V
ROUT
470K
R3111XXX1A
Series
OUT
RIN
100K
0.7V
VSS
OUT
P.G.
VDD
CIN
COUT
+5.0V
ROUT
470K
R3111XXX1A
Series
OUT
GND
VSS
VSS
Figure 7. Output Delay Time Test Circuit (1)
Rev.1.10
OUT
Figure 8. Output Delay Time Test Circuit (2)
- 11 -
■ TYPICAL CHARACTERISTICS
1)
Supply Current vs. Input Voltage
R3111x091C
R3111x271C
2.0
Topt=85°C
Supply Current ISS(µA)
Supply Current ISS(µA)
2.5
2.0
1.5
25°C
1.0
-40°C
0.5
Topt=85°C
1.5
25°C
1.0
-40°C
0.5
0.0
0.0
0
2
4
6
Input Voltage VIN(V)
8
0
10
2
4
6
Input Voltage VIN(V)
8
10
R3111x451C
Supply Current ISS(µA)
2.0
Topt=85°C
1.5
25°C
1.0
-40°C
0.5
0.0
0
2)
2
4
6
Input Voltage VIN(V)
8
10
Detector Threshold Hysteresis vs. Temperature
R3111x091C
R3111x271C
2.9
0.98
0.96
0.94
+VDET
0.92
0.90
0.88
-VDET
0.86
0.84
-60 -40 -20 0
20 40 60
Temperature Topt(°C)
Rev.1.10
Detector Threshold -VDET(V)
Detector Threshold -VDET(V)
1.00
2.8
+VDET
2.7
-VDET
2.6
2.5
-60 -40 -20 0
20 40 60
Temperature Topt(°C)
80 100
- 12 -
80 100
R3111x451C
Detector Threshold -VDET(V)
4.8
4.7
+VDET
4.6
4.5
-VDET
4.4
-60 -40 -20 0
20 40 60
Temperature Topt(°C)
Output Voltage vs. Input Voltage
R3111x091C
1.6
Output Voltage VOUT(V)
R3111x091A
VDD Pull-up 470kΩ
1.4
1.2
1.0
0.8
85°C
0.6
25°C
Topt=-40°C
0.4
5V Pull-up 470kΩ
6
Output Voltage VOUT(V)
3)
80 100
0.2
0.0
Topt=-40°C
5
4
25°C
3
2
85°C
1
0
0
0.2
0.4 0.6 0.8 1 1.2
Input Voltage VIN(V)
1.4
1.6
0
0.2
R3111x271C
Output Voltage VOUT(V)
Output Voltage VOUT(V)
3.0
2.5
2.0
85°C
1.0
25°C
0.5
5
Topt=-40°C
4
25°C
3
85°C
2
1
Topt=-40°C
0.0
0
0
Rev.1.10
1.6
5V Pull-up 470kΩ
6
3.5
1.5
1.4
R3111x271A
VDD Pull-up 470kΩ
4.0
0.4 0.6 0.8 1 1.2
Input Voltage VIN(V)
0.5
1
1.5 2 2.5 3
Input Voltage VIN(V)
3.5
4
0
- 13 -
0.5
1
1.5 2 2.5 3
Input Voltage VIN(V)
3.5
4
R3111x451C
5
4
3
2 85°C
25°C
1
Topt=-40°C
0
0
1
2
3
4
Input Voltage VIN(V)
5V Pull-up 470kΩ
6
Output Voltage VOUT(V)
Output Voltage VOUT(V)
6
4)
R3111x451A
VDD Pull-up 470kΩ
Topt=-40°C
5
25°C
4
85°C
3
2
1
0
5
6
0
Nch Driver Output Current vs. VDS
R3111x091C
Output Current IOUT(µA)
Output Current IOUT(µA)
VDD=0.85V
400
300
200
0.7V
100
0
250
VDD=0.8V
200
150
100
0.7V
50
0.2
0.4
VDS(V)
0.6
0.8
0
R3111x271C
20
18
16
14
0.04
0.06
VDS(V)
0.08
0.1
Topt=25°C
300
VDD=2.5V
12
10
8
6
4
0.02
R3111x271C
Topt=25°C
Output Current IOUT(µA)
Output Current IOUT(mA)
6
0
0
2.0V
1.5V
2
0
250
VDD=0.8V
200
150
0.7V
100
50
0
0
Rev.1.10
5
Topt=25°C
300
600
500
2
3
4
Input Voltage VIN(V)
R3111x091C
Topt=25°C
700
1
0.5
1
1.5
VDS(V)
2
2.5
0
- 14 -
0.02
0.04
0.06
VDS(V)
0.08
0.1
R3111x451C
R3111x451C
Topt=25°C
VDD=4.5V
50
4.0V
40
3.5V
30
3.0V
20
2.5V
2.0V
10
Topt=25°C
300
Output Current IOUT(µA)
Output Current IOUT(mA)
60
250
VDD=0.8V
200
150
0.7V
100
50
1.5V
0
0
0
1
1.5
2 2.5
VDS(V)
3
3.5
4
4.5
0
0.02
Nch Driver Output Current vs. Input Voltage
R3111x091C
14
800
12
700
600
500
Topt=-85°C
400
300
25°C
200
100
0
-40°C
0
0.2
0.4
0.6
Input Voltage VIN(V)
1
5
6
Output Current IOUT(mA)
Topt=-40°C
25°C
10
85°C
5
0
0
Rev.1.10
1
2
3
4
Input Voltage VIN(V)
10
0.1
Topt=-40°C
25°C
8
6
85°C
4
2
0
R3111x451C
15
0.08
0
0.8
25
20
0.04
0.06
VDS(V)
R3111x271C
900
Output Current IOUT(mA)
Output Current IOUT(mA)
5)
0.5
- 15 -
0.5
1
1.5
1
Input Voltage VIN(V)
2.5
3
Pch Driver Output Current vs. Input Voltage
R3111x091C
1.4
Output Current IOUT(mA)
R3111x271C
Topt=25°C
1.2
VDS=0.7V
1.0
0.8
0.6
Topt=25°C
3.5
Output Current IOUT(mA)
6)
0.5V
0.4
0.2
0.0
3.0
VDS=2.1V
2.5
2.0
1.5V
1.5
1.0V
1.0
0.5V
0.5
0.0
0
2
4
6
Input Voltage VIN(V)
8
0
1
2
3
4
5
Input Voltage VIN(V)
6
7
R3111x451C
Topt=25°C
Output Current IOUT(mA)
4.5
4.0
3.5
VDS=2.1V
3.0
1.5V
2.5
2.0
1.0V
1.5
1.0
0.5V
0.5
0.0
0
7)
2
4
6
8
Input Voltage VIN(V)
10
Output Delay Time vs. Load Capacitance
R3111x091A
R3111x271A
100
10
1
tPLH
0.1
0.01
0.001
0.0001
Rev.1.10
Output Delay Time tP(ms)
Output Delay Time tP(ms)
100
tPHL
0.001
0.01
Load Capacitance COUT(µF)
10
1
0.1
0.01
0.001
0.0001
0.1
- 16 -
tPLH
tPHL
0.001
0.01
Load Capacitance COUT(µF)
0.1
R3111x451A
Output Delay Time tP(ms)
100
10
1
0.1
0.01
0.001
0.0001
8)
tPLH
tPHL
0.001
0.01
Load Capacitance COUT(µF)
0.1
Output Delay Time vs. Input Pin Capacitance
R3111x091A
R3111x271A
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)
R3111x451A
Output Delay Time tP(ms)
10
Rev.1.10
tPLH
0.1
tPHL
0.01
0.001
0.001
0.01
0.1
Input Pin Capacitance CIN(µF)
1
1
- 17 -
tPLH
0.1
tPHL
0.01
0.001
0.0001
0.1
100
1
10
0.001
0.01
Input Load Capacitance CIN(µF)
0.1
■ TYPICAL APPLICATION
●
R3111xxx1A CPU Reset Circuit (Nch Open Drain Output)
Case 1.Input Voltage to R3111xxx1A is equal to
Case 2.Input Voltage to R3111xxx1A is unequal to
Input Voltage to CPU
Input Voltage to CPU
VDD1
VDD
VDD
470K
R3111XXX1A
SERIES
R
CPU
GND
●
470K
R3111XXX1A
SERIES
RESET
GND
OUT
VDD2
VDD
VDD
VDD
R
CPU
RESET
GND
OUT
GND
R3111xxx1A CPU Reset Circuit CMOS Output
VDD
VDD
VDD
R3111XXX1C
SERIES
CPU
RESET
GND
OUT
GND
●
●
R3111xxx1A Output Delay Time Circuit 1
(Nch Open Drain Output)
R3111xxx1A Output Delay Time Circuit 2
(Nch Open Drain Output)
VDD
VDD
470K
R3111XXX1A
SERIES
R
VDD
VDD
100K
R1
CPU
RESET
GND
OUT
VDD
R3111XXX1A
SERIES
VDD
R2
CPU
RESET
GND
OUT
GND
GND
●
470K
Memory Back-up Circuit
VDD
D1
VCC
D2
A
B
G
VDD
VCC
VCC
VCC
VCC
RAM1
RAM2
RAM3
RAM4
GND CS
GND CS
GND CS
GND CS
Y1
Y2
Y3
Y4
GND
R3111XXX1C OUT
SERIES
GND
Rev.1.10
- 18 -
●
Voltage level Indicator Circuit (lighted when the power runs out)
(Nch Open Drain Output)
VDD
VDD
OUT
R3111XXX1A
SERIES
GND
●
Detector Threshold Adjustable Circuit
(Nch Open Drain Type Output)
Adjusted Detector Threshold
=(-VDET)*(Ra+Rb)/Rb
VDD
Ra
OUT
R3111XXX1A
SERIES
GND
●
Hysteresis Voltage
=(VHYS)*(Ra+Rb)/Rb
VDD
C
+
*) If the value of Ra is set excessively large, voltage drop may occur
caused by the supply current of IC itself, and detector threshold may
vary.
Rb
Window Comparator Circuit
(Nch Open Drain Output)
VDD
VDD
VDET1
VDD
VDD
R3111XXX1A OUT
SERIES
VDET1
R3111XXX1A OUT
SERIES
VDET2
OUT
VSS
GND
OUT
GND
VSS
Over-charge Preventing Circuit
D1
R1
Solar Battery
Light
R2
VDD
R3 OUT
R3111XXX1C
SERIES
GND
Rev.1.10
- 19 -
R4
Load
●
VDET2
TECHNICAL NOTES
VDD
VDD
R1
R
VDD
VDD
R3111
SERIES
R2
OUT
R3111
SERIES
OUT
GND
GND
Figure 9
1.
2.
Figure 10
In Figure 9, When R3111xxx1C is used, and if an impedance is connected in between Voltage Supplier and the VDD
Pin of R3111xxx1C Series, the operation might be unstable by through-type current at detection.
When R3111xxx1A is used in Figure 9, if the value of R is set excessively large, voltage drop may occur caused by
supply crrent of IC itself and Detector threshold may vary.
Wiring as shown in Figure 10 may cause the oscillation in both output types of R3111 Series.
Rev.1.10
- 20 -