R3111x SERIES LOW VOLTAGE DETECTOR NO.EA-056-100201 OUTLINE The R3111x 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. Three output types, Nch open drain "L" type, Nch open drain "H" type and CMOS type are available. The R3111x Series are operable at a lower voltage than that for the Rx5VL series, and can be driven by a single battery. Seven types of packages, TO-92, SOT-89, SOT-23-3, SOT-23-5, SC-82AB, SC-88A and SON1612-6 are available. FEATURES * Supply Current ......................................................................Typ. 0.8A (-VDET=1.5V, VDD=-VDET-0.1V) * Operating Voltage Range......................................................0.7V to 10.0V (Topt=25C) * Detector Threshold Range.................................................... 0.9V to 6.0V (0.1V steps) (For other voltages, please refer to MARK INFORMATIONS.) * Detector Threshold Accuracy................................................2.0% * Temperature-Drift Coefficient of Detector Threshold ............Typ. 100ppm/C * Output Types.........................................................................Nch Open Drain "L", Nch Open Drain "H", and CMOS * Packages ..............................................................................SON1612-6, SC-82AB, SC-88A, SOT-23-3, SOT-23-5, SOT-89, TO-92 APPLICATIONS * * * * * * CPU and Logic Circuit Reset Battery Checker Window Comparator Wave Shaping Circuit Battery Back-up Circuit Power Failure Detector 1 R3111x BLOCK DIAGRAMS R3111xxxxA VDD R3111xxxxB OUT Vref OUT Vref GND R3111xxxxC VDD OUT Vref GND 2 VDD GND R3111x SELECTION GUIDE The package type, the detector threshold, the output type and the taping type for the ICs can be selected at the users' request. The selection can be made with designating the part number as shown below; Product Name Package Quantity per Reel Pb Free Halogen Free R3111Dxx1-TR-FE SON1612-6 4,000 pcs Yes Yes R3111Qxx1-TR-FE SC-82AB 3,000 pcs Yes Yes R3111Qxx2-TR-FE SC-88A 3,000 pcs Yes Yes R3111Nxx2-TR-FE SOT-23-3 3,000 pcs Yes Yes R3111Nxx1-TR-FE SOT-23-5 3,000 pcs Yes Yes R3111Hxx1-T1-F SOT-89 1,000 pcs Yes No R3111Exx1-TZ-F TO-92 2,500 pcs Yes No xx : The detector threshold can be designated in the range from 0.9V(09) to 6.0V(60) in 0.1V steps. (For other voltages, please refer to MARK INFORMATIONS.) : Designation of Output Type (A) Nch Open Drain (Output "L" at VDD=-VDET) (B) Nch Open Drain (Output "H" at VDD=-VDET) (C) CMOS (Output "L" at VDD=-VDET) 3 R3111x PIN CONFIGURATIONS z TO-92 z SOT-89 z SOT-23-3 z SOT-23-5 3 (mark side) 5 (mark side) (mark side) 1 1 (mark side) 1 1 2 z SC-88A 5 3 2 2 3 4 z SON1612-6 6 (mark side) (mark side) 1 3 3 z SC-82AB 4 2 4 1 2 2 3 5 4 (mark side) 1 2 3 PIN DESCRIPTIONS z TO-92 z SOT-89 z SOT-23-5 Pin No. Symbol Pin No. Symbol Pin No. Symbol Pin No. Symbol 1 VDD 1 OUT 1 OUT 1 OUT 2 GND 2 VDD 2 GND 2 VDD 3 OUT 3 GND 3 VDD 3 GND 4 NC 5 NC z SC-82AB 4 z SOT-23-3 z SC-88A z SON1612-6 Pin No. Symbol Pin No. Symbol Pin No. Symbol 1 OUT 1 OUT 1 OUT 2 VDD 2 NC 2 VDD 3 NC 3 VDD 3 GND 4 GND 4 NC 4 NC 5 GND 5 VDD 6 NC R3111x ABSOLUTE MAXIMUM RATINGS Symbol VDD Item Rating Unit 12 V VSS-0.3 to VDD+0.3 V VSS-0.3 to 12 V Output Current 70 mA Power Dissipation (TO-92)* 300 Power Dissipation (SOT-89)* 900 Power Dissipation (SOT-23-3)* 420 Power Dissipation (SOT-23-5)* 420 Power Dissipation (SC-82AB)* 380 Power Dissipation (SC-88A)* 380 Power Dissipation (SON1612-6)* 500 Supply Voltage VOUT1 Output Voltage (CMOS) VOUT2 Output Voltage (Nch) IOUT PD mW Topt Operating Temperature Range -40 to 85 C Tstg Storage Temperature Range -55 to 125 C Tsolder Lead temperature (Soldering) 260C, 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. 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 R3111x ELECTRICAL CHARACTERISTICS * Symbol Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold 0.882 0.900 0.918 V VHYS Detector Threshold Hysteresis 0.027 0.045 0.063 V 0.8 0.9 2.4 2.7 A 10 V ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating VoltageNote1 IOUT Output Current (Driver Output Pin) tPLH -VDET/ Topt * Topt=25C R3111x09xA/C VDD=0.80V VDD=2.90V Topt=25C 0.55 0.70 -40C < = Topt < = 85C Nch VDS=0.05V,VDD=0.70V VDS=0.50V,VDD=0.85V Pch VDS=-2.1V,VDD=4.5V 0.65 0.80 0.01 0.05 0.05 0.50 1.0 2.0 Output Delay TimeNote2 Detector Threshold Temperature Coefficient mA mA 100 -40C < = Topt < = 100 85C s ppm/C Topt=25C R3111x18xA/C Symbol V Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold 1.764 1.800 1.836 V VHYS Detector Threshold Hysteresis 0.054 0.090 0.126 V 0.8 1.0 2.4 3.0 A 10 V ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating VoltageNote1 IOUT Output Current (Driver Output Pin) tPLH -VDET/ Topt VDD=1.70V VDD=3.80V Topt=25C < = < = -40C Topt 85C Nch VDS=0.05V, VDD=0.70V VDS=0.50V, VDD=1.50V Pch VDS=-2.1V,VDD=4.5V 0.55 0.70 0.65 0.80 0.01 1.00 0.05 2.00 1.0 2.0 Output Delay TimeNote2 Detector Threshold Temperature Coefficient mA mA 100 -40C < = Topt < = 85C 100 V s ppm/C 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 Output type, the 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 ((+VDET)+2.0V)/2. In the case of Nch Open Drain Output type: The 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. 6 R3111x * Symbol Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold 2.646 2.700 2.754 V VHYS Detector Threshold Hysteresis 0.081 0.135 0.189 V 0.9 1.1 2.7 3.3 A 10 V ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating VoltageNote1 IOUT tPLH -VDET/ Topt * Topt=25C R3111x27xA/C Output Current (Driver Output Pin) VDD=2.60V VDD=4.70V Topt=25C -40C < = Topt < = 85C Nch VDS=0.05V,VDD=0.70V VDS=0.50V,VDD=1.50V Pch VDS=-2.1V,VDD=4.5V 0.55 0.70 0.65 0.80 0.01 1.00 0.05 2.00 1.0 2.0 Output Delay TimeNote2 Detector Threshold Temperature Coefficient mA mA 100 -40C < = Topt < = 100 85C s ppm/C Topt=25C R3111x36xA/C Symbol V Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold 3.528 3.600 3.672 V VHYS Detector Threshold Hysteresis 0.108 0.180 0.252 V 1.0 1.2 3.0 3.6 A 10 V ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating VoltageNote1 IOUT tPLH -VDET/ Topt Output Current (Driver Output Pin) VDD= 3.47V VDD= 5.60V Topt=25C -40C < = Topt < = 85C Nch VDS=0.05V,VDD=0.70V VDS=0.50V,VDD=1.50V Pch VDS=-2.1V,VDD=4.5V 0.55 0.70 0.65 0.80 0.01 1.00 0.05 2.00 1.0 2.0 Output Delay TimeNote2 Detector Threshold Temperature Coefficient mA mA 100 -40C < = Topt < = 85C 100 V s ppm/C 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 Output type, the 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 ((+VDET)+2.0V)/2. In the case of Nch Open Drain Output type: The 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. 7 R3111x * Symbol Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold 4.410 4.500 4.590 V VHYS Detector Threshold Hysteresis 0.135 0.225 0.315 V 1.1 1.3 3.3 3.9 A 10 V ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating VoltageNote1 IOUT tPLH -VDET/ Topt * Topt=25C R3111x45xA/C Output Current (Driver Output Pin) VDD=4.34V VDD=6.50V Topt=25C -40C < = Topt < = 85C Nch VDS=0.05V, VDD=0.70V VDS=0.50V, VDD=1.50V Pch VDS=-2.1V,VDD=8.0V 0.55 0.70 0.65 0.80 0.01 1.00 0.05 2.00 1.5 3.0 Output Delay TimeNote2 Detector Threshold Temperature Coefficient mA mA 100 -40C < = Topt < = 100 85C s ppm/C Topt=25C R3111x54xA/C Symbol V Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold 5.292 5.400 5.508 V VHYS Detector Threshold Hysteresis 0.162 0.270 0.378 V 1.2 1.4 3.6 4.2 A 10 V ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating VoltageNote1 IOUT tPLH -VDET/ Topt Output Current (Driver Output Pin) VDD=5.20V VDD=7.40V Topt=25C -40C < = Topt < = 85C Nch VDS=0.05V, VDD=0.70V VDS=0.50V, VDD=1.50V Pch VDS=-2.1V, VDD=8.0V 0.55 0.70 0.65 0.80 0.01 1.00 0.05 2.00 1.5 3.0 Output Delay TimeNote2 Detector Threshold Temperature Coefficient mA mA 100 -40C < = Topt < = 85C 100 V s ppm/C 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 Output type, the 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 ((+VDET)+2.0V)/2. In the case of Nch Open Drain Output type: The 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. 8 R3111x * Symbol Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold 2.254 2.300 2.346 V VHYS Detector Threshold Hysteresis 0.069 0.115 0.161 V 0.9 1.1 2.7 3.3 A 10 V ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating VoltageNote1 IOUT Output Current (Driver Output Pin) tPLH Output Delay TimeNote2 -VDET/ Topt * Topt=25C R3111Q231B Detector Threshold Temperature Coefficient VDD=2.2V VDD=4.3V Topt=25C -40C < = Topt < = 85C Nch VDS=0.10V,VDD=6.5V 0.55 0.70 0.65 0.80 2.5 mA 100 -40C < = Topt < = 100 85C s ppm/C Topt=25C R3111Q441B Symbol V Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold 4.312 4.400 4.488 V VHYS Detector Threshold Hysteresis 0.132 0.220 0.308 V 1.1 1.3 3.3 3.9 A 10 V ISS Supply Current VDD=4.24V VDD=6.4V VDDH Maximum Operating Voltage VDDL Minimum Operating VoltageNote1 Topt=25C IOUT Output Current (Driver Output Pin) Nch VDS=0.10V, VDD=6.5V tPLH Output Delay TimeNote2 -VDET/ Topt Detector Threshold Temperature Coefficient -40C < = Topt < = 85C 0.55 0.70 0.65 0.80 2.5 mA 100 -40C < = Topt < = 85C V 100 s ppm/C 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 Output type, the 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 ((+VDET)+2.0V)/2. In the case of Nch Open Drain Output type: The 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. 9 R3111x TIMING CHART Supply Voltage Released Voltage +VDET Detector Threshold -VDET (VDD) Detector Threshold Hysteresis Detector Threshold Hysteresis Detector Threshold Hysteresis Minimum Operating Voltage VDDL GND Pull-up Voltage Output Voltage (VOUT) GND tPLH tPLH R3111xxxxA tPLH R3111xxxxB R3111xxxxC DEFINITION OF OUTPUT DELAY TIME Output Delay Time (tPLH) is defined as follows: 1. In the case of Nch Open Drain Output:(R3111xxxxA/B) 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:(R3111xxxxC) The time interval between the rising edge of VDD pulse from 0.7V to (+VDET)+2.0V and becoming of the output voltage to ((+VDET)+2.0V)/2. +VDET+2.0V Supply Voltage (VDD) +VDET+2.0V Supply Voltage (VDD) 0.7V GND Output Voltage (VOUT) 2.5V 0.7V GND tPHL tPLH Nch Open Drain Output (R3111xxxxA) 0.7V GND +VDET+2.0V +VDET+2.0V Output 2 Voltage GND (VOUT) 2.5V GND GND 10 Supply Voltage (VDD) 5.0V 5.0V Output Voltage (VOUT) +VDET+2.0V tPHL tPLH tPHL tPLH Nch Open Drain Output CMOS Output (R3111xxxxB) (R3111xxxxC) R3111x 11 R3111x ELECTRICAL CHARACTERISTICS BY DETECTOR THRESHOLD * R3111x09x to R3111x60x Part Number R3111x09xx R3111x10xx R3111x11xx R3111x12xx R3111x13xx R3111x14xx R3111x15xx R3111x16xx R3111x17xx R3111x18xx R3111x19xx R3111x20xx R3111x21xx R3111x22xx R3111x23xx R3111x24xx R3111x25xx R3111x26xx R3111x27xx R3111x28xx R3111x29xx R3111x30xx R3111x31xx R3111x32xx R3111x33xx R3111x34xx R3111x35xx R3111x36xx R3111x37xx R3111x38xx R3111x39xx R3111x40xx R3111x41xx R3111x42xx R3111x43xx R3111x44xx R3111x45xx R3111x46xx R3111x47xx R3111x48xx R3111x49xx R3111x50xx R3111x51xx R3111x52xx R3111x53xx R3111x54xx R3111x55xx R3111x56xx R3111x57xx R3111x58xx R3111x59xx R3111x60xx Detector Threshold 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 Detector Threshold Hysteresis VHYS[V] 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 Supply Current 1 Condition ISS1[A] Typ. Supply Current 2 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 ISS2[A] 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 *1) In the case of CMOS output type; 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 ((+VDET)+2.0V)/2. In the case of Nch open drain output type : The 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 at ((+VDET)+2.0V)/2. *2) VDD value when Output Voltage is equal or less than 0.1V. In the case of Nch open drain output type, the output pin is pulled up to 5V through 470k resistor. Condition 1: Topt=25C Condition 2: -40C < = Topt < = 85C 12 R3111x Output Current 2 *3 Output Current 1 IOUT1[mA] Condition Min. Typ. IOUT2[mA] Condition Min. VDD= 0.05 0.85V VDD= 1.0V Nch VDS=0.05V VDD=0.7V 0.01 2.5 Minimum Operating Voltage VDDL[V] Typ. Max. *2 *2 Detector Threshold Temperature Coefficient -VDET/Topt[ppm/C] Condition Typ. 0.5 1.0 0.05 Nch VDS= 0.5V Nch VDS=0.10V VDD=6.5V 0.2 Typ. Output Delay Time tPLH[s] Max. VDD= 1.5V 1.0 2.0 100 *1 Condition 1 Condition 1 0.55 0.70 Condition 2 Condition 2 0.65 0.80 -40C < = Topt < = 85C 100 - *3) Only A/C versions. 13 R3111x OPERATION * Operation of R3111xxxxA VDD Ra Comparator OUT OUT pin should be pulled-up to VDD or an external voltage level. Rb Vref Nch Tr.1 Rc GND Block Diagram (R3111xxxxA) 1 2 3 4 5 Step Released Voltage +VDET Detector Threshold -VDET A Detector Threshold Hysteresis B Comparator (+) Pin Input Voltage Supply Voltage (VDD) Comparator Output Minimum Operating Voltage VDDL GND Tr.1 Output Tr. I Pull-up Voltage Output Delay Time Output Voltage (VOUT) tPLH II 1 2 3 4 5 I II II II I H L Indefinite L H OFF ON Indefinite ON OFF Nch OFF ON Indefinite ON OFF Rb+Rc xVDD Ra+Rb+Rc Rb Ra+Rb xVDD GND Operation Diagram * Explanation of operation Step 1. The output voltage is equal to the pull-up voltage. Step 2. At Point "A", Vref > = VDDx(Rb+Rc)/(Ra+Rb+Rc) is true, as a result, the output of comparator is reversed from "H" to "L", therefore the output voltage becomes the GND level. The voltage level of Point A means a detector threshold voltage (-VDET). Step 3. When the supply voltage is lower than the minimum operating voltage, the operation of the output transistor becomes indefinite. The output voltage is equal to the pull-up voltage. Step 4. The output Voltage is equal to the GND level. Step 5. At Point "B", Vref < = VDDxRb/(Ra+Rb) is true, as a result, the output of comparator is reversed from "L" to "H", then the output voltage is equal to the pull-up voltage. The voltage level of Point B means a released voltage (+VDET). ) The difference between a released voltage and a detector threshold voltage is a detector threshold hysteresis. 14 R3111x * Operation of R3111xxxxB VDD Ra Comparator OUT OUT pin should be pulled-up to VDD or an external voltage level. Rb Vref Nch Tr.1 Rc GND Block Diagram (R3111xxxxB) 1 2 3 Step 1 2 3 Comparator (-) Pin Input Voltage I II I Comparator Output L H L Tr.1 OFF ON OFF ON OFF ON Released Voltage +VDET Detector Threshold -VDET A Detector Threshold Hysteresis B Supply Voltage (VDD) Minimum Operating Voltage VDDL GND Output Tr. I Pull-up Voltage Output Voltage (VOUT) Output Delay Time tPLH II Nch Rb+Rc xVDD Ra+Rb+Rc Rb Ra+Rb xVDD GND Operation Diagram * Explanation of operation Step 1. The output voltage is equal to the GND level. Step 2. At Point "A", Vref > = VDDx(Rb+Rc)/(Ra+Rb+Rc) is true, as a result, the output of comparator is reversed from "L" to "H", therefore the output voltage becomes the pull-up voltage. The voltage level of Point A means a detector threshold voltage (-VDET). Step 3. At Point "B", Vref < = VDDxRb/(Ra+Rb) is true, as a result, the output of comparator is reversed from "H" to "L", then the output voltage is equal to the GND level. The voltage level of Point B means a released voltage (+VDET). ) The difference between a released voltage and a detector threshold voltage is a detector threshold hysteresis. 15 R3111x * Operation of R3111xxxxC VDD Comparator Ra Pch OUT Rb Vref Nch Tr.1 Rc GND Block Diagram (R3111xxxxC) 1 2 3 4 5 Step 1 2 3 4 5 I II II II I H L Indefinite L H Released Voltage +VDET Detector Threshold -VDET A Detector Threshold Hysteresis B Comparator (+) Pin Input Voltage Supply Voltage (VDD) Comparator Output Minimum Operating Voltage VDDL GND Tr.1 Output Tr. Output Delay Time Output Voltage (VOUT) tPLH GND I II OFF ON Indefinite ON OFF Pch ON OFF Indefinite OFF ON Nch OFF ON Indefinite ON OFF Rb+Rc xVDD Ra+Rb+Rc Rb Ra+Rb xVDD Operation Diagram * Explanation of operation Step 1. The output voltage is equal to the supply voltage (VDD). Step 2. At Point "A", Vref > = VDDx(Rb+Rc)/(Ra+Rb+Rc) is true, as a result, the output of comparator is reversed from "H" to "L", therefore the output voltage becomes the GND level. The voltage level of Point A means a detector threshold voltage (-VDET). Step 3. When the supply voltage is lower than the minimum operating voltage, the operation of the output transistor becomes indefinite. Step 4. The output Voltage is equal to the GND level. Step 5. At Point "B", Vref < = VDDxRb/(Ra+Rb) is true, as a result, the output of comparator is reversed from "L" to "H", then the output voltage is equal to the supply voltage (VDD). The voltage level of Point B means a released voltage (+VDET). ) The difference between a released voltage and a detector threshold voltage is a detector threshold hysteresis. 16 R3111x TEST CIRCUITS ISS 5V VDD 470k VDD VIN R3111x Series VIN R3111x Series OUT VOUT OUT GND GND Supply Current Test Circuit Detector Threshold Test Circuit (Pull-up circuit is not necessary for CMOS Output type.) VDD VDD VIN R3111x Series IOUT VIN OUT VDS GND R3111x Series VDS IOUT OUT VDD-VDS GND Nch Driver Output Current Test Circuit Pch Driver Output Current Test Circuit Apply to CMOS Output type only +VDET+2.0V 0.7V GND 5V VDD R3111x Series P.G. ROUT 470k +VDET+2.0V 0.7V GND VOUT VDD OUT GND COUT 5V RIN 470k P.G. CIN ROUT 470k R3111x Series VOUT OUT GND VDS Output Delay Time Test Circuit (1) (Pull-up circuit is not necessary for VDS Output Delay Time Test Circuit (2) CMOS Output type.) 17 R3111x TYPICAL CHARACTERISTICS 1) Supply Current vs. Input Voltage R3111x09xx R3111x27xx 2.0 Topt=85C Supply Current ISS(A) Supply Current ISS(A) 2.5 2.0 1.5 25C 1.0 -40C 0.5 Topt=85C 1.5 25C 1.0 -40C 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 R3111x45xx Supply Current ISS(A) 2.0 Topt=85C 1.5 25C 1.0 -40C 0.5 0.0 0 2 4 6 Input Voltage VIN(V) 8 10 2) Detector Threshold Hysteresis vs. Temperature R3111x09xx R3111x27xx 0.98 0.96 0.94 +VDET 0.92 0.90 -VDET 0.88 0.86 0.84 -60 18 2.9 Detector Threshold -VDET(V) Detector Threshold -VDET(V) 1.00 -40 -20 0 20 40 60 Temperature Topt(C) 80 100 2.8 +VDET 2.7 -VDET 2.6 2.5 -60 -40 -20 0 20 40 60 Temperature Topt(C) 80 100 R3111x R3111x45xx 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) 80 100 3) Output Voltage vs. Input Voltage R3111x09xC R3111x09xA 5V Pull-up 470k 6 1.4 Output Voltage VOUT(V) Output Voltage VOUT(V) 1.6 1.2 1.0 0.8 85C 0.6 25C Topt=-40C 0.4 0.2 0.0 Topt=-40C 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 0 0.2 R3111x27xC Output Voltage VOUT(V) 3.5 3.0 2.5 2.0 85C 1.0 25C 0.5 1.6 5V Pull-up 470k 6 1.5 1.4 R3111x27xA 4.0 Output Voltage VOUT(V) 0.4 0.6 0.8 1 1.2 Input Voltage VIN(V) 5 Topt=-40C 4 25C 3 85C 2 1 Topt=-40C 0.0 0 0 0.5 1 1.5 2 2.5 3 Input Voltage VIN(V) 3.5 4 0 0.5 1 1.5 2 2.5 3 Input Voltage VIN(V) 3.5 4 19 R3111x R3111x45xC R3111x45xA 5V Pull-up 470k 6 5 Output Voltage VOUT(V) Output Voltage VOUT(V) 6 4 3 2 85C 25C 1 Topt=-40C 0 0 1 2 3 4 Input Voltage VIN(V) Topt=-40C 5 25C 4 85C 3 2 1 0 5 6 0 1 2 3 4 Input Voltage VIN(V) 5 6 4) Nch Driver Output Current vs. VDS R3111x09xx R3111x09xx Topt=25C 600 VDD=0.85V 500 400 300 200 0.7V 100 Topt=25C 300 Output Current IOUT(A) Output Current IOUT(A) 700 0 250 VDD=0.8V 200 150 100 0.7V 50 0 0 0.2 0.4 VDS(V) 0.6 0.8 0 0.02 Topt=25C 20 18 16 14 VDD=2.5V 12 10 8 6 4 2.0V 1.5V 2 0 0.1 Topt=25C 300 250 VDD=0.8V 200 150 0.7V 100 50 0 0 20 0.08 R3111x27xx Output Current IOUT(A) Output Current IOUT(mA) R3111x27xx 0.04 0.06 VDS(V) 0.5 1 1.5 VDS(V) 2 2.5 0 0.02 0.04 0.06 VDS(V) 0.08 0.1 R3111x R3111x45xx R3111x45xx Topt=25C VDD=4.5V 50 4.0V 40 3.5V 30 3.0V 20 2.5V 2.0V 10 Topt=25C 300 Output Current IOUT(A) Output Current IOUT(mA) 60 250 VDD=0.8V 200 150 0.7V 100 50 1.5V 0 0 0 0.5 1 1.5 2 2.5 VDS(V) 3 3.5 4 4.5 0 0.02 0.04 0.06 VDS(V) 0.08 0.1 5) Nch Driver Output Current vs. Input Voltage R3111x27xx 14 800 12 Output Current IOUT(mA) Output Current IOUT(A) R3111x09xx 900 700 600 500 Topt=-85C 400 300 25C 200 100 0 -40C 0 0.2 0.4 0.6 Input Voltage VIN(V) 10 Topt=-40C 25C 8 6 85C 4 2 0 0.8 1 0 0.5 1 1.5 1 Input Voltage VIN(V) 2.5 3 R3111x45xx Output Current IOUT(mA) 25 20 Topt=-40C 15 25C 10 85C 5 0 0 1 2 3 4 Input Voltage VIN(V) 5 6 21 R3111x 6) Pch Driver Output Current vs. Input Voltage R3111x09xC 1.2 VDS=0.7V 1.0 0.8 0.6 0.5V 0.4 0.2 Topt=25C 3.5 Output Current IOUT(mA) 1.4 Output Current IOUT(mA) R3111x27xC Topt=25C 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 R3111x45xC Topt=25C 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 2 4 6 8 Input Voltage VIN(V) 10 7) Output Delay Time vs. Load Capacitance (Topt=25C) R3111x09xA R3111x27xA 10 1 tPLH 0.1 0.01 0.001 0.0001 22 100 Output Delay Time tP(ms) Output Delay Time tP(ms) 100 tPHL 0.001 0.01 Load Capacitance COUT(F) 0.1 10 1 tPLH 0.1 0.01 0.001 0.0001 tPHL 0.001 0.01 Load Capacitance COUT(F) 0.1 R3111x R3111x45xA Output Delay Time tP(ms) 100 10 1 tPLH 0.1 0.01 0.001 0.0001 tPHL 0.001 0.01 Load Capacitance COUT(F) 0.1 8) Output Delay Time vs. Input Pin Capacitance R3111x09xA R3111x27xA 100 Output Delay Time tP(ms) Output Delay Time tP(ms) 100 10 1 tPHL 0.1 0.01 0.001 0.0001 tPLH 0.001 0.01 Input Pin Capacitance CIN(F) 0.1 10 1 tPLH 0.1 tPHL 0.01 0.001 0.0001 0.001 0.01 Input Pin Capacitance CIN(F) 0.1 R3111x45xA Output Delay Time tP(ms) 100 10 1 tPLH 0.1 tPHL 0.01 0.001 0.001 0.01 0.1 Input Pin Capacitance CIN(F) 1 23 R3111x TYPICAL APPLICATION * R3111xxxxA CPU Reset Circuit (Nch Open Drain Output) Case 1. Input Voltage to R3111xxxxA is equal to Input Voltage to CPU Case 2. Input Voltage to R3111xxxxA is unequal to Input Voltage to CPU 470k R3111xxxxA Series R VDD VDD CPU GND GND * 470k R3111xxxxA Series RESET OUT VDD2 VDD VDD VDD R VDD CPU RESET OUT GND GND R3111xxxxC CPU Reset Circuit (CMOS Output) VDD VDD VDD CPU R3111xxxxC Series RESET OUT GND GND * R3111xxxxA Output Delay Time Circuit 1 (Nch Open Drain Output) * R3111xxxxA Output Delay Time Circuit 2 (Nch Open Drain Output) VDD VDD 470k R3111xxxxA Series R VDD CPU VDD 100k RESET OUT VDD GND GND * R1 470k R3111xxxxA Series VDD CPU R2 RESET OUT GND GND Memory Back-up Circuit VDD VCC D1 D2 A B C Y1 Y2 Y3 Y4 VCC VCC VCC VCC RAM1 RAM2 RAM3 RAM4 GND CS GND CS GND CS GND CS VDD R3111xxxxC Series GND 24 GND OUT R3111x * Voltage level Indicator Circuit (lighted when the power runs out) (Nch Open Drain Output) VDD VDD R3111xxxxA Series OUT GND * Detector Threshold Adjustable Circuit (Nch Open Drain Output) Adjusted Detector Threshold =(-VDET)x(Ra+Rb)/Rb VDD OUT R3111xxxxA Series Ra VDD C + Hysteresis Voltage =(VHYS)x(Ra+Rb)/Rb 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. GND * Window Comparator Circuit (Nch Open Drain Output) VDD VDD R3111xxxxA OUT Series -VDET1 -VDET1 -VDET2 VDD VDD R3111xxxxA -VDET2 Series OUT WC_OUT GND GND WC_OUT GND GND Over-charge Preventing Circuit R1 R2 R3 D1 VDD OUT R3111xxxxC Series R4 Load Light Solar Battery * GND 25 R3111x TECHNICAL NOTES When R3111xxxxA/B (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 R3111xxxxC (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 this IC with the connection in Figure A or Figure B. The connection in Figure C may cause the oscillation in both R3111xxxxC (CMOS Output) and R3111xxxxA/B (Nch Open Drain Output), therefore do not use R3111x Series with the connection in Figure C. VDD VDD R1 R3111x Series GND Figure A 26 VDD R1 OUT R2 R1 VDD VDD R3111x Series R3111x Series GND Figure B OUT GND Figure C R2 OUT 1. The products and the product specifications described in this document are subject to change or discontinuation 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. The materials in this document may not be copied or otherwise reproduced in whole or in part without prior written consent of Ricoh. 3. Please be sure to take any necessary formalities under relevant laws or regulations before exporting or otherwise taking out of your country the products or the technical information described herein. 4. The technical information described in this document 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, telecommunication 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 to 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, firecontainment 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 document. 8. Please contact Ricoh sales representatives should you have any questions or comments concerning the products or the technical information. RICOH COMPANY., LTD. Electronic Devices Company Ricoh presented with the Japan Management Quality Award for 1999. Ricoh awarded ISO 14001 certification. Ricoh continually strives to promote customer satisfaction, and shares the achievements of its management quality improvement program with people and society. The Ricoh Group was awarded ISO 14001 certification, which is an international standard for environmental management systems, at both its domestic and overseas production facilities. Our current aim is to obtain ISO 14001 certification for all of our business offices. http://www.ricoh.com/LSI/ RICOH COMPANY, LTD. Electronic Devices Company Shin-Yokohama office (International Sales) 3-2-3, Shin-Yokohama, Kohoku-ku, Yokohama City, Kanagawa 222-8530, Japan Phone: +81-45-477-1697 Fax: +81-45-477-1698 RICOH EUROPE (NETHERLANDS) B.V. Semiconductor Support Centre Prof. W.H.Keesomlaan 1, 1183 DL Amstelveen, The Netherlands P.O.Box 114, 1180 AC Amstelveen Phone: +31-20-5474-309 Fax: +31-20-5474-791 RICOH ELECTRONIC DEVICES KOREA Co., Ltd. 11 floor, Haesung 1 building, 942, Daechidong, Gangnamgu, Seoul, Korea Phone: +82-2-2135-5700 Fax: +82-2-2135-5705 RICOH ELECTRONIC DEVICES SHANGHAI Co., Ltd. Room403, No.2 Building, 690#Bi Bo Road, Pu Dong New district, Shanghai 201203, People's Republic of China Phone: +86-21-5027-3200 Fax: +86-21-5027-3299 RICOH COMPANY, LTD. Electronic Devices Company Taipei office Room109, 10F-1, No.51, Hengyang Rd., Taipei City, Taiwan (R.O.C.) Phone: +886-2-2313-1621/1622 Fax: +886-2-2313-1623 Ricoh completed the organization of the Lead-free production for all of our products. After Apr. 1, 2006, we will ship out the lead free products only. Thus, all products that will be shipped from now on comply with RoHS Directive.