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'98.Dec.05
LOW VOLTAGE DETECTOR
R3111xxx1A/C Series
s 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.
s FEATURES
q q q q q q q Ultra-low Supply Current............................................................... TYP. 0.8A (VDD=1.5V) Wide Range of Operating Voltage.................................................. 0.7 to 10.0V(Topt=25C) 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
s APPLICATIONS
q q q q q q CPU and Logic Circuit Reset Battery Checker Window Comparator Wave Shaping Circuit Battery Back-up Circuit Power Failure Detector
s BLOCK DIAGRAMS
R3111XXX1A
VDD OUT
R3111XXX1C
VDD
OUT
Vref GND
Vref GND
Rev.1.10
-1-
s TIMING CHART
Release Voltage +VDET Supply Voltage Detector Threshold -VDET (VDD) Minimum Operating Voltage VSS
Detector Threshold Hysteresis
Output Voltage (OUT) VSS tPLH
s 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 470k 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 Input Voltage (VDD) 0.7V GND 5.0V Output Voltage 2.5V
+VDET + 2.0V Input Voltage (VDD) 0.7V GND +VDET+2.0V Output Voltage +VDET+2.0V 2 GND
tPHL tPLH
GND
tPHL
tPLH
Nch Open Drain Output
CMOS Output
Rev.1.10
-2-
s 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; R3111xxx1x-xx Part Number ab cd Code a b c 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
d
Rev.1.10
-3-
s PIN CONFIGURATION
q TO-92 q SOT-89 q SOT-23-5
5 4
q
SC-82AB
4 3
(mark side)
(mark side)
(mark side)
(mark side)
1
2
1
2
3
1
2
3
1
2
3
s PIN DESCRIPTION
q TO-92 Pin No. Symbol 1 VDD 2 GND 3 OUT q SOT-89 Pin No. Symbol 1 OUT 2 VDD 3 GND q SOT-23-5 Pin No. Symbol 1 OUT 2 VDD 3 GND 4 NC 5 NC q SC-2AB Pin No. Symbol 1 OUT 2 VDD 3 NC 4 GND
s ABSOLUTE MAXIMUM RATINGS
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 Symbol VDD VOUT1 VOUT2 IOUT PD PD Rating 12 VSS-0.3 to VDD+0.3 VSS-0.3 to 12 70 300 150 -40 to 85 -55 to 125 260C, 10s Unit V V V mA mW mW C C
Rev.1.10
-4-
s ELECTRICAL CHARACTERISTICS
q R3111x091A/C Symbol Item -VDET Detector Threshold VHYS Detector Threshold Hysteresis ISS VDDH VDDL Supply Current Maximum Operating Voltage Minimum Operating Voltage*Note1 Output Current (Driver Output Pin) Output Delay Time*Note2 Detector Threshold Temperature Coefficient Conditions MIN. 0.882 0.027 TYP. 0.900 0.045 0.8 0.9 0.55 0.65 0.01 0.05 1.0 0.05 0.50 2.0 100 -40CTopt85C 100 MAX. 0.918 0.063 2.4 2.7 10 0.70 0.80 Topt=25C Unit V V A V V mA mA s ppm/C Topt=25C Unit V V A V V mA mA 100 -40CTopt85C 100 s ppm/C
VDD=0.80V 2.90V Topt=25C -40CTopt85C Nch VDS=0.05V,VDD=0.70V VDS=0.50V,VDD=0.85V Pch VDS=-2.1V,VDD=4.5V
IOUT
tPLH -VDET/T q
R3111x181A/C Symbol Item -VDET Detector Threshold VHYS Detector Threshold Hysteresis ISS VDDH VDDL Supply Current Maximum Operating Voltage Minimum Operating Voltage*Note1 Output Current (Driver Output Pin) Output Delay Time* Detector Threshold Temperature Coefficient
Note2
Conditions
MIN. 1.764 0.054
VDD=1.70V 3.80V Topt=25C -40CTopt85C 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
MAX. 1.836 0.126 2.4 3.0 10 0.70 0.80
IOUT
0.01 1.00 1.0
0.05 2.00 2.0
tPLH -VDET/T
Rev.1.10
-5-
q
R3111x271A/C Symbol Item -VDET Detector Threshold VHYS Detector Threshold Hysteresis ISS VDDH VDDL Supply Current Maximum Operating Voltage Minimum Operating Voltage*Note1 Output Current (Driver Output Pin) Output Delay Time* Detector Threshold Temperature Coefficient
Note2
Conditions
MIN. 2.646 0.081
VDD=2.60V 4.70V Topt=25C -40CTopt85C Nch VDS=0.05V,VDD=0.70V VDS=0.50V,VDD=1.50V Pch VDS=-2.1V,VDD=4.5V -40CTopt85C
TYP. 2.700 0.135 0.9 1.1 0.55 0.65
MAX. 2.754 0.189 2.7 3.3 10 0.70 0.80
Topt=25C Unit V V A V V mA mA
IOUT
0.01 1.00 1.0
0.05 2.00 2.0 100 100
tPLH -VDET/T q
s ppm/C Topt=25C Unit V V A V V mA mA
R3111x361A/C Symbol Item -VDET Detector Threshold VHYS Detector Threshold Hysteresis ISS VDDH VDDL Supply Current Maximum Operating Voltage Minimum Operating Voltage*Note1 Output Current (Driver Output Pin) Output Delay Time*Note2 Detector Threshold Temperature Coefficient
Conditions
MIN. 3.528 0.108
VDD=3.47V 5.60V Topt=25C -40CTopt85C Nch VDS=0.05V,VDD=0.70V VDS=0.50V,VDD=1.50V Pch VDS=-2.1V,VDD=4.5V -40CTopt85C
TYP. 3.600 0.180 1.0 1.2 0.55 0.65
MAX. 3.672 0.252 3.0 3.6 10 0.70 0.80
IOUT
0.01 1.00 1.0
0.05 2.00 2.0 100 100
tPLH -VDET/T
s ppm/C
Rev.1.10
-6-
q
R3111x451A/C Symbol Item -VDET Detector Threshold VHYS Detector Threshold Hysteresis ISS VDDH VDDL Supply Current Maximum Operating Voltage Minimum Operating Voltage*Note1 Output Current (Driver Output Pin) Output Delay Time* Detector Threshold Temperature Coefficient
Note2
Conditions
MIN. 4.410 0.135
VDD=4.34V 6.50V Topt=25C -40CTopt85C Nch VDS=0.05V,VDD=0.70V VDS=0.50V,VDD=1.50V Pch VDS=-2.1V,VDD=8.0V -40CTopt85C
TYP. 4.500 0.225 1.1 1.3 0.55 0.65
MAX. 4.590 0.315 3.3 3.9 10 0.70 0.80
Topt=25C Unit V V A V V mA mA
IOUT
0.01 1.00 1.5
0.05 2.00 3.0 100 100
tPLH -VDET/T q
s ppm/C Topt=25C Unit V V A V V mA mA
R3111x541A/C Symbol Item -VDET Detector Threshold VHYS Detector Threshold Hysteresis ISS VDDH VDDL Supply Current Maximum Operating Voltage Minimum Operating Voltage*Note1 Output Current (Driver Output Pin)
Conditions
MIN. 5.292 0.162
VDD=5.20V 7.40V Topt=25C -40CTopt85C 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
MAX. 5.508 0.378 3.6 4.2 10 0.70 0.80
IOUT
0.01 1.00 1.5
0.05 2.00 3.0
Output Delay Time*Note2 100 s Detector Threshold Temperature -VDET/T -40CTopt85C 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 470k 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 470k 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-
s ELECTRICAL CHARACTERISRICS BY DETECTOR THRESHOLD
q R3111x09x to R3111x60x
Detector Threshold 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 -VDET[V] 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 Detector Threshold Hysteresis VHYS[V] 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 Supply Current 1 ISS1[A] TYP. MAX. Condition Supply Current 2 ISS2[A] TYP. 0.9 MAX. 2.7
0.8
2.4
1.0
3.0
VDD= (-VDET) -0.10V
0.9
2.7
1.1
3.3
VDD= (-VDET) -0.13V
1.0
3.0
VDD= (-VDET) +2.0V
1.2
3.6
VDD= (-VDET) -0.16V
1.1
3.3
1.3
3.9
VDD= (-VDET) -0.20V
1.2
3.6
1.4
4.2
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 470k,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 470k resistor. Condition 1: Topt=25C Condition 2: -40CTopt85C
Rev.1.10
-8-
Output Current 1 IOUT1[mA] Condition MIN. TYP. Condition
Output Current 2 IOUT2[mA] MIN. VDD= 0.85V VDD= 1.0V 0.05 TYP. 0.5
Output Delay Time tPLH[s] MAX.
Minim um O perating Voltage VDDL[V] TYP. MAX.
Detector Threshold Tem perature Coefficient VDET/T[ppm/C] Condition TYP.
0.2
1.0
Note 2 Condition 1 0.55 Condition 2 0.65
Note 2 Condition 1 0.70 Condition 2 0.80
Nch VDS=0.05V VDD=0.7V
0.01
0.05
Nch VDS= 0.5V VDD= 1.5V 1.0 2.0
Note 1 100
-40C Topt 85C
100
Rev.1.10
-9-
s OPERATION
VDD Ra Pch OUT Rb Vref Rc GND Comparator Nch
Figure 1. Block Diagram
1
2
3
4 B
5
Supply Voltage (VDD)
Released Voltage(+VDET) Detector Threshold(-VDET) A Minimum Operating Voltage GND
Step Comparator Pin Input Voltage Comparator Output Tr.1 Pch Output Tr. Nch
1 I H OFF ON OFF
2 II L ON OFF ON
3 III Indefinite Indefinite Indefinite Indefinite
4 IV L ON OFF ON
5 V H OFF ON OFF
Detector Threshold Hysteresis
Output Voltage (VOUT)
I. II.
GND tPLH
Rb + Rc VDD Ra + Rb + Rc Rb VDD Ra + Rb
Figure 2. Operation Diagram Output Voltage is equal to Supply Voltage (VDD). At Point "A", VrefVDDx(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", VrefVDDxRb/(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. Step 1. Step 2.
Rev.1.10
- 10 -
s TEST CIRCUITS
ISS
VDD 5.0V
VDD R3111X Series GND
VIN R3111X Series GND
470K VOUT OUT
VIN
OUT
*Pull-up circuit is not necessary for CMOS Output type, or R3111XXXXC.
Figure 3. Supply Current Test Circuit
Figure 4. Detector Threshold Test Circuit
VDS IOUT VIN R3111X Series GND
*Apply only to CMOS
VDD R3111X Series GND IOUT OUT VDS
VDD
VIN
OUT VDD- VDS
Figure 5. Nch Driver Output Current Test Circuit
+5.0V +VDET+2.0V 0.7V VSS VDD R3111XXX1A Series OUT GND COUT VSS ROUT 470K OUT
Figure 6. Pch Driver Output Current Test Circuit
+5.0V ROUT 470K OUT
+VDET+2.0V 0.7V VSS
RIN 100K R3111XXX1A Series OUT GND
P.G.
P.G.
VDD CIN
VSS
Figure 7. Output Delay Time Test Circuit (1)
Figure 8. Output Delay Time Test Circuit (2)
Rev.1.10
- 11 -
s TYPICAL CHARACTERISTICS
1) Supply Current vs. Input Voltage R3111x091C
2.5 2.0
R3111x271C
Supply Current ISS(A)
Topt=85C Topt=85C 1.5 25C -40C 0.5
Supply Current ISS(A)
2.0 1.5 1.0 0.5 0.0 0 2 4 6 Input Voltage VIN(V) 8 10
25C -40C
1.0
0.0 0 2 4 6 Input Voltage VIN(V) 8 10
R3111x451C
2.0
Supply Current ISS(A)
1.5
Topt=85C 25C
1.0 -40C 0.5
0.0 0 2 4 6 Input Voltage VIN(V) 8 10
2)
Detector Threshold Hysteresis vs. Temperature R3111x091C
1.00 2.9
R3111x271C
Detector Threshold -VDET(V)
Detector Threshold -VDET(V)
0.98 0.96 0.94 0.92 0.90 0.88 0.86 0.84 -60 -40 -20 0 20 40 60 Temperature Topt(C) 80 100 -VDET +VDET
2.8
+VDET
2.7 -VDET 2.6 2.5 -60 -40 -20 0 20 40 60 Temperature Topt(C)
80 100
Rev.1.10
- 12 -
R3111x451C
4.8
Detector Threshold -VDET(V)
4.7
+VDET
4.6
4.5
-VDET
4.4 -60 -40 -20 0 20 40 60 Temperature Topt(C)
80 100
3)
Output Voltage vs. Input Voltage R3111x091C
1.6 VDD Pull-up 470k 6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 0.2 0.4 0.6 0.8 1 1.2 Input Voltage VIN(V) 1.4 1.6 85C 25C Topt=-40C
R3111x091A
5V Pull-up 470k Topt=-40C
Output Voltage VOUT(V)
Output Voltage VOUT(V)
5 4
25C 3 2 85C 1 0 0 0.2 0.4 0.6 0.8 1 1.2 Input Voltage VIN(V) 1.4 1.6
R3111x271C
4.0 VDD Pull-up 470k 6 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 0.5 1 1.5 2 2.5 3 Input Voltage VIN(V) 3.5 4 85C 25C Topt=-40C 0 0 0.5
R3111x271A
5V Pull-up 470k
Output Voltage VOUT(V)
Output Voltage VOUT(V)
5 Topt=-40C 4 25C 3 85C 2 1 1 1.5 2 2.5 3 Input Voltage VIN(V) 3.5 4
Rev.1.10
- 13 -
R3111x451C
6 VDD Pull-up 470k 6
R3111x451A
5V Pull-up 470k Topt=-40C 25C 4 85C 3 2 1 0 5 6 0 1 2 3 4 Input Voltage VIN(V) 5 6
Output Voltage VOUT(V)
5 4 3 2 85C 25C 1 Topt=-40C 0 0 1 2 3 4 Input Voltage VIN(V)
Output Voltage VOUT(V)
5
4)
Nch Driver Output Current vs. VDS R3111x091C
700 Topt=25C 300
R3111x091C
Topt=25C
Output Current IOUT(A)
Output Current IOUT(A)
600 500 400 300 200 100 0 0 0.2 0.4 VDS(V) 0.6 0.8 0.7V VDD=0.85V
250 VDD=0.8V 200 150 100 50 0 0 0.02 0.04 0.06 VDS(V) 0.08 0.1 0.7V
R3111x271C
Output Current IOUT(mA)
R3111x271C
Topt=25C VDD=2.5V 300 Topt=25C
Output Current IOUT(A)
20 18 16 14 12 10 8 6 4 2 0 0 0.5 1 1.5 VDS(V)
250 VDD=0.8V 200 150 100 50 0 0 0.02 0.04 0.06 VDS(V) 0.08 0.1 0.7V
2.0V
1.5V
2
2.5
Rev.1.10
- 14 -
R3111x451C
60 Topt=25C 300
R3111x451C
Topt=25C
Output Current IOUT(mA)
50 40
Output Current IOUT(A)
VDD=4.5V 4.0V 3.5V
250 VDD=0.8V 200 150 100 50 0 0 0.02 0.04 0.06 VDS(V) 0.08 0.1 0.7V
30 20 10 1.5V 0 0 0.5 1 1.5 2 2.5 VDS(V) 2.0V 2.5V
3.0V
3
3.5
4
4.5
5)
Nch Driver Output Current vs. Input Voltage R3111x091C
900 14
R3111x271C
Output Current IOUT(mA)
12 10 8 6 85C 4 2 0 0 0.5 1 1.5 1 Input Voltage VIN(V) 2.5 3 Topt=-40C 25C
Output Current IOUT(mA)
800 700 600 500 400 300 200 100 0 0 0.2 Topt=-85C 25C -40C 0.4 0.6 Input Voltage VIN(V) 0.8 1
R3111x451C
25
Output Current IOUT(mA)
20 15 10
Topt=-40C 25C
85C 5 0 0 1 2 3 4 Input Voltage VIN(V) 5 6
Rev.1.10
- 15 -
6)
Pch Driver Output Current vs. Input Voltage R3111x091C
1.4 Topt=25C 3.5
R3111x271C
Topt=25C
Output Current IOUT(mA)
VDS=0.7V
Output Current IOUT(mA)
1.2 1.0 0.8 0.6 0.4 0.2 0.0 0 2
3.0 2.5 2.0 1.5V 1.5 1.0 0.5 0.0 0 1 2 1.0V 0.5V 3 4 5 Input Voltage VIN(V) 6 7 VDS=2.1V
0.5V
4 6 Input Voltage VIN(V)
8
R3111x451C
4.5 Topt=25C
Output Current IOUT(mA)
4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 2 4 6 8 Input Voltage VIN(V) 10 1.0V 0.5V 1.5V VDS=2.1V
7)
Output Delay Time vs. Load Capacitance R3111x091A
100 100
R3111x271A
Output Delay Time tP(ms)
10 1 0.1 0.01 0.001 0.0001 tPHL tPLH
Output Delay Time tP(ms)
10 1 0.1 0.01 0.001 0.0001 tPHL tPLH
0.001 0.01 Load Capacitance COUT(F)
0.1
0.001 0.01 Load Capacitance COUT(F)
0.1
Rev.1.10
- 16 -
R3111x451A
100
Output Delay Time tP(ms)
10 1 0.1 0.01 0.001 0.0001 tPHL tPLH
0.001 0.01 Load Capacitance COUT(F)
0.1
8)
Output Delay Time vs. Input Pin Capacitance R3111x091A
100 100
R3111x271A
Output Delay Time tP(ms)
10 1 0.1 tPHL 0.01 0.001 0.0001
Output Delay Time tP(ms)
10 1 0.1 0.01 0.001 0.0001 tPHL tPLH
tPLH
0.001 0.01 Input Pin Capacitance CIN(F)
0.1
0.001 0.01 Input Load Capacitance CIN(F)
0.1
R3111x451A
100
Output Delay Time tP(ms)
10 1 0.1 tPHL 0.01 0.001 0.001
tPLH
0.01 0.1 Input Pin Capacitance CIN(F)
1
Rev.1.10
- 17 -
s TYPICAL APPLICATION
q 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
VDD VDD 470K OUT R VDD CPU RESET GND
VDD1 VDD 470K OUT R VDD CPU RESET GND
VDD2
R3111XXX1A SERIES GND
R3111XXX1A SERIES GND
q
R3111xxx1A CPU Reset Circuit CMOS Output
VDD VDD R3111XXX1C SERIES GND VDD OUT CPU RESET GND
q
R3111xxx1A Output Delay Time Circuit 1 (Nch Open Drain Output)
VDD VDD 470K OUT R VDD CPU RESET GND
q
R3111xxx1A Output Delay Time Circuit 2 (Nch Open Drain Output)
VDD 100K R1 470K OUT R2 VDD CPU RESET GND
R3111XXX1A SERIES GND
R3111XXX1A SERIES VDD GND
q
Memory Back-up Circuit
VDD D1 D2 A B G GND VCC Y1 Y2 Y3 Y4 VCC RAM1 GND CS VDD VCC RAM2 GND CS VCC RAM3 GND CS VCC RAM4 GND CS
R3111XXX1C OUT SERIES GND
Rev.1.10
- 18 -
q
Voltage level Indicator Circuit (lighted when the power runs out) (Nch Open Drain Output)
VDD VDD R3111XXX1A SERIES GND
OUT
q
Detector Threshold Adjustable Circuit (Nch Open Drain Type Output)
VDD Ra OUT R3111XXX1A SERIES GND VDD
Adjusted Detector Threshold =(-VDET)*(Ra+Rb)/Rb Hysteresis Voltage =(VHYS)*(Ra+Rb)/Rb
C
+
Rb
*) 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.
q
Window Comparator Circuit (Nch Open Drain Output)
VDD VDD R3111XXX1A OUT SERIES VDET2 GND
OUT VDD VDET1 VDET2
VDD R3111XXX1A OUT SERIES VDET1 GND
OUT
VSS
VSS
q
Over-charge Preventing Circuit
R1 D1 R2 VDD R3111XXX1C SERIES GND R4
Light
Solar Battery
R3 OUT
Rev.1.10
- 19 -
Load
TECHNICAL NOTES
VDD R VDD
VDD R1 VDD
R3111 SERIES GND
OUT
R2 R3111 SERIES GND OUT
Figure 9 1.
Figure 10
2.
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 -

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