LOW VOLTAGE DETECTOR Rx5VT SERIES APPLICATION MANUAL ELECTRONIC DEVICES DIVISION NO.EA-026-9803 NOTICE 1. The products and the product specifications described in this application manual 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. This application manual 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 application manual shows typical characteristics of and example application circuits for the products. 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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 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, fire-containment 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 application manual. 8. Please contact Ricoh sales representatives should you have any questions or comments concerning the products or the technical information. June 1995 Rx5VT SERIES APPLICATION MANUAL CONTENTS OUTLINE ......................................................................................................1 FEATURES....................................................................................................1 APPLICATIONS .............................................................................................1 BLOCK DIAGRAMS .......................................................................................2 TIME CHART .................................................................................................2 DEFINITION OF OUTPUT DELAY TIME tPLH ....................................................2 SELECTION GUIDE .......................................................................................4 PIN CONFIGURATION ...................................................................................5 PIN DESCRIPTION ........................................................................................5 ABSOLUTE MAXIMUM RATINGS ...................................................................6 ELECTRICAL CHARACTERISTICS.................................................................7 ELECTRICAL CHARACTERITICS BY DETECTOR THRESHOLD ....................10 OPERATION ................................................................................................14 TEST CIRCUITS ...........................................................................................15 TYPICAL CHARACTERISTICS......................................................................16 1) Supply Current vs. Input Voltage ...........................................................................16 2) Detector Threshold vs. Temperature .......................................................................16 3) Output Voltage vs. Input Voltage ...........................................................................17 4) Nch Driver Output Current vs. VDS .........................................................................18 5) Nch Driver Output Current vs. Input Voltage................................................................19 6) Pch Driver Output Current vs. Input Voltage ................................................................20 7) Output Delay Time vs. Load Capacitance ..................................................................20 8) Output Delay Time vs. Input Pin Capacitance ..............................................................21 TYPICAL APPLICATIONS ............................................................................22 * Rx5VTxA CPU Reset Circuit(Nch Open Drain Output) .......................................................22 * Rx5VTxC CPU Reset Circuit(CMOS Output) ................................................................22 * Rx5VTxA Output delay Time Circuit 1 .......................................................................22 * Rx5VTxA Output delay Time Circuit 2 .......................................................................22 * Memory Back-up Circuit .....................................................................................22 * Voltage Level Indicator Circuit (lighted when the power runs out) ............................................23 * Detector Threshold Changing Circuit ........................................................................23 * Window Comparator Circuit .................................................................................23 * Excessive Charge Preventing Circuit ........................................................................23 PACKAGE DIMENSIONS .............................................................................25 TAPING SPECIFICATIONS ...........................................................................26 LOW VOLTAGE DETECTOR R x5VT SERIES OUTLINE The R x5VT 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 instance, for system reset. Each of these ICs consists of a voltage reference unit, a comparator, resistors for voltage detection, an output driver and a hysteresis circuit. The detector threshold is fixed with high accuracy. The R x5VT Series are operable by a lower voltage than that for the R x5VL Series, and can be driven by a single battery. Two output types, Nch open drain type and CMOS type, are available. Three types of packages, TO-92, SOT89 (Mini-power Mold), SOT-23-5 (Mini-mold), are available. FEATURES * Ultra-low Supply Current ............................TYP. 0.8A (VDD=1.5V) * Broad Operating Voltage Range .................. 0.7V 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 (refer to Selection Guide). * High Accuracy Detector Threshold ..............2.5% * Low Temperature-Drift Coefficien of Detector Threshold ..............TYP. 100ppm/C * Two Output Types .........................................Nch Open Drain and CMOS * Three Types of Packages ..............................TO-92, SOT-89 (Mini-power Mold), SOT-23-5 (Mini-mold) APPLICATIONS * CPU & Logic Circuit Reset * Battery Checker * Window Comparator * Wave Shaping Circuit * Battery Back-Up Circuit * Power Failure Detector 1 R x5VT BLOCK DIAGRAMS * Nch Open Drain Output (R x5VT xxA) * CMOS Output (R x5VT xxC) VDD VDD 2 2 OUT 1 + + - - OUT 1 Vref Vref 3 3 GND GND TIME CHART Supply Voltage (VDD) Released Voltage Detected Voltage +VDET -VDET Detector Threshold Hysteresis Minimum Operating Voltage GND Output Voltage (OUT) GND tPLH DEFINITION OF OUTPUT DELAY TIME tPLH +VDET + 2.0V +VDET + 2.0V Input Voltage (VDD) Input Voltage (VDD) 0.7V 0.7V GND GND 5.0V +VDET +2.0V Output Voltage Output Voltage +VDET + 2.0V 2 2.5V GND GND tPHL tPLH Nch Open Drain Output 2 tPHL tPLH CMOS Output Rx5VT Output Delay Time tPLH is defined as follows: 1. In the case of Nch Open Drain Output: When the time at which a pulse voltage which increases from 0.7V to +VDET+2.0V is applied to VDD is Time A, and the time at which the output voltage reaches 2.5V under the conditions that the output pin (OUT) is pulled up to 5V by a resistor of 470k is Time B, the time period from Time A through Time B. 2. In the case of CMOS Output: When the time at which a pulse voltage which increases from 0.7V to +VDET+2.0V is applied to VDD is Time A, and the time at which the output voltage reaches the voltage of (+VDET+2.0V)/2 is Time B, the time period from Time A through Time B. 3 R x5VT SELECTION GUIDE The package type, the detector threshold, the output type, the packing type, and the taping type of R x5VT series can be designating at the user's request by specifying the part number as follows: } a } R x5VT xxxx- xx Part Number b cd e Code Contents a Designation of Package Type: E: TO-92 H: SOT-89 (Mini-power Mold) N: SOT-23-5 (Mini-mold) b Setting Detector Threshold (-VDET): Stepwise setting with a step of 0.1V in the range of 0.9V to 6.0V is possible. c Designation of Output Type: A: Nch Open Drain C: CMOS d Designation of Packing Type: A: Taping C: Antistatic bag for TO-92 and samples e Designation of Taping Type: Ex. TO-92: RF, RR, TZ SOT-89: T1, T2 SOT-23-5: TR, TL (refer to Taping Specifications) "TZ", "T1" and "TR" are prescribed as a standard For example, the product with Package Type SOT-89, Detector Threshold 3.5V, Output Type Nch Open Drain and Taping Type T1, is designated by Part Number RH5VT35AA-T1. 4 Rx5VT PIN CONFIGURATION * TO-92 * SOT-23-5 * SOT-89 5 4 (mark side) (mark side) (mark side) 1 1 2 2 3 1 2 3 3 PIN DESCRIPTION * TO-92 * SOT-89 * SOT-23-5 Pin No. Symbol Pin No. Symbol Pin No. Symbol 1 OUT 1 OUT 1 OUT 2 VDD 2 VDD 2 VDD 3 GND 3 GND 3 GND 4 NC 5 NC 5 ABSOLUTE MAXIMUM RATINGS Symbol Topt=25C Item VDD Supply Voltage VOUT Output Voltage Rating Unit 12 V CMOS VSS-0.3 to VDD+0.3 Nch VSS-0.3 to 12 V IOUT Output Current 70 mA PD1 Power Dissipation 1 (NOTE1) 300 mW PD2 Power Dissipation 2 (NOTE2) 150 mW Topt Operating Temperature Range -30 to +80 C Tstg Storage Temperature Range -55 to +125 C Tsolder Lead Temperature (Soldering) 260C,10s (NOTE 1) applied to SOT-89 and TO-92 (NOTE 2) applied to SOT-23-5 ABSOLUTE MAXIMUM RATINGS Absolute Maximum ratings are threshold limit values that must not be exceeded even for an instant under any conditions. Moreover, such values for any two items must not be reached simultaneously. Operation above these absolute maximum ratings may cause degradation or permanent damage to the device. These are stress ratings only and do not necessarily imply functional operation below these limits. 6 Rx5VT ELECTRICAL CHARACTERISTICS * R x5VT09A/C Symbol Topt=25C Item Conditions MIN. TYP. MAX. Unit -VDET Detector Threshold 0.878 0.900 0.922 V VHYS Detector Threshold Hysteresis 0.027 0.045 0.063 V VDD=0.80V 0.8 2.4 VDD=2.90V 0.9 2.7 ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating Voltage 10 Nch IOUT Output Current Topt=25C 0.55 0.70 - 30CTopt80C 0.65 0.80 VDS=0.05V,VDD=0.70V 0.01 0.05 VDS=0.50V,VDD=0.85V 0.05 0.50 1.0 2.0 Pch VDS=-2.1V,VDD=4.5V tPLH - VDET Topt Output Delay Time -30CTopt80C A V V mA 100 s Topt=25C Item Conditions MIN. TYP. MAX. Unit -VDET Detector Threshold 1.755 1.800 1.845 V VHYS Detector Threshold Hysteresis 0.054 0.090 0.126 V VDD=1.70V 0.8 2.4 VDD=3.80V 1.0 3.0 ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating Voltage 10 Nch IOUT Output Current Topt=25C 0.55 0.70 -30CTopt80C 0.65 0.80 VDS=0.05V,VDD=0.70V 0.01 0.05 VDS=0.50V,VDD=1.50V 1.00 2.00 1.0 2.0 Pch VDS=-2.1V,VDD=4.5V tPLH - VDET Topt Note 2 ppm/C * R x5VT18A/C Symbol Note 1 mA 100 Detector Threshold Temperature Coefficient Note Output Delay Time Detector Threshold Temperature Coefficient 100 A V V Note 1 mA mA 100 -30CTopt80C Note s Note 2 ppm/C 7 R x5VT * R x5VT27A/C Symbol Topt=25C Item Conditions MIN. TYP. MAX. Unit -VDET Detector Threshold 2.633 2.700 2.767 V VHYS Detector Threshold Hysteresis 0.081 0.135 0.189 V VDD=2.60V 0.9 2.7 VDD=4.70V 1.1 3.3 ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating Voltage 10 Nch IOUT Output Current Topt=25C 0.55 0.70 -30CTopt80C 0.65 0.80 VDS=0.05V,VDD=0.70V 0.01 0.05 VDS=0.50V,VDD=1.50V 1.00 2.00 1.0 2.0 Pch VDS=-2.1V,VDD=4.5V tPLH - VDET Topt Output Delay Time -30CTopt80C A V V Note 1 mA mA 100 Detector Threshold Temperature Coefficient Note 100 s Note 2 ppm/C Topt=25C Symbol Item Conditions TYP. MAX. Unit -VDET Detector Threshold 3.510 3.600 3.690 V VHYS Detector Threshold Hysteresis 0.108 0.180 0.252 V VDD=3.47V 1.0 3.0 VDD=5.60V 1.2 3.6 ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating Voltage 10 Nch IOUT Output Current Topt=25C 0.55 0.70 -30CTopt80C 0.65 0.80 VDS=0.05V,VDD=0.70V 0.01 0.05 VDS=0.50V,VDD=1.50V 1.00 2.00 1.0 2.0 Pch VDS=-2.1V,VDD=4.5V tPLH - VDET Topt 8 MIN. Output Delay Time Detector Threshold Temperature Coefficient 100 A V V Note 1 mA mA 100 -30CTopt80C Note s ppm/C Note 2 Rx5VT * R x5VT45A/C Symbol Topt=25C Item Conditions MIN. TYP. MAX. Unit -VDET Detector Threshold 4.388 4.500 4.612 V VHYS Detector Threshold Hysteresis 0.135 0.225 0.315 V VDD=4.34V 1.1 3.3 VDD=6.50V 1.3 3.9 ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating Voltage 10 Nch IOUT Output Current Topt=25C 0.55 0.70 - 30CTopt80C 0.65 0.80 VDS=0.05V,VDD=0.70V 0.01 0.05 VDS=0.50V,VDD=1.50V 1.00 2.00 1.5 3.0 Pch VDS=-2.1V,VDD=8.0V tPLH -VDET Topt Output Delay Time -30CTopt80C A V V mA 100 s Topt=25C Item Conditions MIN. TYP. MAX. Unit -VDET Detector Threshold 5.265 5.400 5.535 V VHYS Detector Threshold Hysteresis 0.162 0.270 0.378 V VDD=5.20V 1.2 3.6 VDD=7.40V 1.4 4.2 ISS Supply Current VDDH Maximum Operating Voltage VDDL Minimum Operating Voltage 10 Nch IOUT Output Current Topt=25C 0.55 0.70 -30CTopt80C 0.65 0.80 VDS=0.05V,VDD=0.70V 0.01 0.05 VDS=0.50V,VDD=1.50V 1.00 2.00 1.5 3.0 Pch VDS=-2.1V,VDD=8.0V tPLH -VDET Topt (Note 1) (Note 2) Note 2 ppm/C * R x5VT54A/C Symbol Note 1 mA 100 Detector Threshold Temperature Coefficient Note Output Delay Time Detector Threshold Temperature Coefficient 100 A V V Note 1 mA mA 100 -30CTopt80C Note s Note 2 ppm/C Minimum Operating Voltage means the value of input voltage when output voltage maintains 0.1V or less, provided that in the case of Nch Open Drain Type Products, the pull-up resistance is set at 470k, and the pull-up voltage is set at 5.0V. Refer to the previously defined "Output Delay Time tPLH". 9 R x5VT ELECTRICAL CHARACTEISTICS BY DETECTOR THRESHOLD * R x5VT09A/C to Rx5VT39A/C Detector Threshold Detector Threshold Hysteresis Supply Current 1 Supply Current 2 -VDET(V) VHYS(V) Iss(A) Iss(A) Part Number Rx5VT09A/C Rx5VT10A/C Rx5VT11A/C Rx5VT12A/C Rx5VT13A/C Rx5VT14A/C Rx5VT15A/C Rx5VT16A/C Rx5VT17A/C Rx5VT18A/C Rx5VT19A/C Rx5VT20A/C Rx5VT21A/C Rx5VT22A/C Rx5VT23A/C Rx5VT24A/C Rx5VT25A/C Rx5VT26A/C Rx5VT27A/C Rx5VT28A/C Rx5VT29A/C Rx5VT30A/C Rx5VT31A/C Rx5VT32A/C Rx5VT33A/C Rx5VT34A/C Rx5VT35A/C Rx5VT36A/C Rx5VT37A/C Rx5VT38A/C MIN. TYP. MAX. MIN. TYP. MAX. 0.878 0.975 1.073 1.170 1.268 1.365 1.463 1.560 1.658 1.755 1.853 1.950 2.048 2.145 2.243 2.340 2.438 2.535 2.633 2.730 2.828 2.925 3.023 3.120 3.218 3.315 3.413 3.510 3.608 3.705 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 0.922 1.025 1.127 1.230 1.332 1.435 1.537 1.640 1.742 1.845 1.947 2.050 2.152 2.255 2.357 2.460 2.562 2.665 2.767 2.870 2.972 3.075 3.177 3.280 3.382 3.485 3.587 3.690 3.792 3.895 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 0.045 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 0.063 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 (Note 1) Refer to the previously defined "Output Delay Time tPLH". (Note 2) Refer to the previously defined "Minimum Operating Voltage". Condition 1:Topt =25C Condition 2:-30C Topt 80C 10 Conditions TYP. MAX. 0.8 2.4 0.9 2.7 1.0 3.0 Conditions TYP. MAX. 0.9 2.7 1.0 3.0 1.1 3.3 1.2 3.6 VDD= (-VDET) -0.10V VDD= (-VDET) -0.13V VDD= (-VDET) +2.0V Topt=25C Output Current 1 Output Current 2 IOUT(mA) Conditions MIN. Minimum Operating Voltage Detector Threshold Tempco. IOUT(mA) tPLH(s) VDDL(V) -VDET/Topt (ppm/C) IOUT(mA) TYP. Conditions VDD= 0.85V VDD= 1.0V MIN. TYP. 0.05 0.50 0.2 1.0 Nch VDS= 0.05V Output Current 3 Output Delay Time Conditions MIN. TYP. MAX. Pch 0.01 0.05 VDS= 0.50V VDS= -2.1V TYP. MAX. VDD= 0.7V 1.0 TYP. Note 2 Note 2 1.0 2.0 Note 1 100 Condition 1 Condition 1 0.55 0.70 VDD= 1.5V Conditions -30C Topt 100 80C 2.0 VDD= 4.5V Condition 2 Condition 2 0.65 0.80 11 R x5VT * R x5VT40A/C to R x5VT60A/C Detector Threshold Detector Threshold Hysteresis -VDET(V) VHYS(V) Part Number Rx5VT40A/C Rx5VT41A/C Rx5VT42A/C Rx5VT43A/C Rx5VT44A/C Rx5VT45A/C Rx5VT46A/C Rx5VT47A/C Rx5VT48A/C Rx5VT49A/C Rx5VT50A/C Rx5VT51A/C Rx5VT52A/C Rx5VT53A/C Rx5VT54A/C Rx5VT55A/C Rx5VT56A/C Rx5VT57A/C Rx5VT58A/C Rx5VT59A/C Supply Current 2 ISS(A) MIN. TYP. MAX. MIN. TYP. MAX. 3.900 3.998 4.095 4.193 4.290 4.388 4.485 4.583 4.680 4.778 4.875 4.973 5.070 5.168 5.265 5.363 5.460 5.558 5.655 5.753 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 4.100 4.202 4.305 4.407 4.510 4.612 4.715 4.817 4.920 5.022 5.125 5.277 5.330 5.432 5.535 5.637 5.740 5.842 5.945 6.047 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 0.200 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 0.280 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 (Note 1) Refer to the previously defined "Output Delay Time tPLH". (Note 2) Refer to the previously defined "Minimum Operating Voltage". Condition 1:Topt =25C Condition 2:-30C Topt 80C 12 Supply Current 1 Conditions ISS(A) TYP. MAX. 1.1 3.3 Conditions TYP. MAX. 1.3 3.9 1.4 4.2 VDD= (-VDET) -0.16V VDD= (-VDET) +2.0V VDD= (-VDET) -0.20V 1.2 3.6 Topt=25C Output Current 1 Output Current 2 IOUT(mA) Conditions MIN. VDD= 0.7V Output Delay Time IOUT(mA) tPLH(s) IOUT(mA) TYP. Conditions MIN. TYP. Nch VDS= 0.05V Output Current 3 Conditions MIN. TYP. MAX. Pch 0.01 0.05 VDS= 0.50V VDD= 1.5V 1.0 2.0 VDS= -2.1V VDD= 8.0V Minimum Detector Threshold Tempco. Operating Voltage VDDL(V) TYP. MAX. -VDET/Topt (ppm/C) Conditions TYP. Note 2 Note 2 1.5 3.0 Note 1 100 Condition 1 Condition 1 -30C 0.55 0.70 Topt 80C 100 Condition 2 Condition 2 0.65 0.80 13 OPERATION VDD Ra * In Rx5VTxA, Nch Tr. drain is Pch + connected to OUT pin. - * In Rx5VTxC, Nch Tr. drain OUT Vref Rb and Pch Tr. drain are connected Nch Tr.1 to OUT pin. Rc GND FIG. 1 Block Diagram Operation Diagram 1 Released Volage +VDET Supply Volage (VDD) Detected Volage -VDET 2 3 5 4 B A Step Step 1 Step 2 Step 3 Step 4 Step 5 Comparator(+) Pin Input Voltage I II II II I Comparator Output H L Indefinite L H Tr. 1 OFF ON Indefinite ON OFF Pch ON OFF Indefinite OFF ON Nch OFF ON Indefinite ON OFF Detector Threshold Hysteresis Minimum Operating Volage GND Output Tr. I. Output Volage Rb + Rc Ra + Rb + Rc (OUT) II. GND FIG. 2 Operation Diagram Rb Ra + Rb *VDD *VDD tPLH Step 1. Output Voltage is equal to Power Source Voltage (VDD). Step 2. When Input Voltage to Comparator reaches the state of VrefVDD*(Rb+Rc)/(Ra+Rb+Rc)at Point A (Detected Voltage -VDET), the output of Comparator is reserved, so that Output Voltage becomes GND. Step 3. In the case of CMOS Output, Output Voltage becomes unstable when Supply Voltage (VDD) is smaller than Minimum Operating Voltage. In the case of Nch Open Drain Output, a pulled-up voltage is output. Step 4. Output Voltage becomes equal to GND. Step 5. When Input Voltage to Comparator reaches the state of VrefVDD* (Rb)/(Ra+ Rb) at Point B (Released Voltage +VDET), the output of Comparator is reversed, so that Output Voltage becomes equal to Supply Voltage (VDD). 14 R x5VT TEST CIRCUITS ISS VDD VDD Rx5VT SERIES Rn:Rx5VTxxA:470k Rx5VTxxC:None Rx5VT OUT SERIES OUT VDET GND GND VSS VSS VSS FIG. 4 Detector Threshold Test Circuit FIG. 3 Supply Current Test Circuit VDD VDD VDD VDD Rx5VT SERIES OUT IOUT Rx5VTxxC OUT SERIES +VDS VSS FIG. 6 Pch Driver Output Current Test Circuit FIG. 5 Nch Driver Output Current Test Circuit VDD Rx5VTxxA OUT SERIES GND ROUT 470k OUT +5.0V ROUT 470k RIN 100k +5.0V P.G. VDD -VDS VSS VSS +VDET+2.0V IOUT GND GND VSS 0.7V VSS Rn VDD VDD +VDET+2.0V 0.7V VSS VDD P.G. Rx5VTxxA SERIES CIN COUT OUT GND VSS VSS FIG. 7 Output Delay Time Test Circuit (1) OUT FIG. 8 Output Delay Time Test Circuit (2) In Output Delay Time Test Circuits (1) and (2) in FIG. 7 and FIG. 8, their respective Output Voltage Fall Times (tPHL) and Rise Times (tPLH) are defined as shown below. +VDET+2.0V +VDET+2.0V Input Voltage Input Voltage 0.7V 0.7V GND GND 5.0V +VDET+2.0V Output Voltage Output Voltage 2.5V +VDET+2.0V 2 GND GND tPHL tPLH Nch Open Drain Output tPHL tPLH CMOS Output 15 Rx5VT TYPICAL CHARACTERISTICS 1) Supply Current vs. Input Voltage R x5VT09C R x5VT27C 2.0 Topt=80C 2.5 Supply Current ISS(A) Supply Current ISS(A) 3.0 25C 2.0 -30C 1.5 1.0 0.5 Topt=80C 1.5 25C 1.0 -30C 0.5 0 0 0 2 4 6 Input Voltage VIN(V) 8 0 10 2 4 6 Input Voltage VIN(V) 8 10 R x5VT45C Supply Current ISS(A) 3.0 2.5 Topt=80C 25C 2.0 -30C 1.5 1.0 0.5 0 0 2 4 6 Input Voltage VIN(V) 8 10 2) Detector Threshold vs. Temperature R x5VT27C R x5VT09C 2.9 0.98 0.96 +VDET 0.94 0.92 0.90 -VDET 0.88 0.86 0.84 -40 16 Detector Threshold VDET(V) Detector Threshold VDET(V) 1.00 -20 0 20 40 60 Tenperature Topt(C) 80 100 +VDET 2.8 2.7 -VDET 2.6 2.5 -40 -20 0 20 40 60 Temperature Topt(C) 80 100 R x5VT R x5VT45C Detector Threshold VDET(V) 4.8 4.7 +VDET 4.6 4.5 -VDET 4.4 -40 -20 0 20 40 60 Temperature Topt(C) 80 100 3) Output Voltage vs. Input Voltage R x5VT09A R x5VT09A VDD Pull-up 470k 6 1.2 1.0 0.8 0.6 Topt=-30C 0.4 25C 0.2 5 4 25C 3 80C 2 1 80C 0 0.2 0.4 0.6 0.8 1.0 1.2 Input Voltage VIN(V) R x5VT27A 4 1.4 2 0 0 Topt=-30C 25C 80C 0.5 1.0 1.5 2.0 2.5 3.0 Input Voltage VIN(V) 0.2 0.4 0.6 0.8 1.0 1.2 Input Voltage VIN(V) R x5VT27A VDD Pull-up 470k 3 1 0 0 1.6 6 Output Voltage VOUT(V) 0 Output Voltage VOUT(V) 5V Pull-up 470k Topt=-30C 1.4 Output Voltage VOUT(V) Output Voltage VOUT(V) 1.6 1.4 1.6 5V Pull-up 470k 5 4 Topt=-30C 3 25C 2 80C 1 0 3.5 4.0 0 0.5 1.0 1.5 2.0 2.5 3.0 Input Voltage VIN(V) 3.5 4.0 17 R x5VT R x5VT45A R x5VT45A VDD Pull-up 470k 5 4 3 2 Topt=-30C 25C 80C 1 0 0 1 5V Pull-up 470k 6 Output Voltage VOUT(V) Output Voltage VOUT(V) 6 Topt=-30C 5 25C 4 80C 3 2 1 0 2 3 4 Input Voltage VIN(V) 5 0 6 1 2 3 4 Input Voltage VIN(V) 5 6 4) Nch Driver Output Current vs. VDS R x5VT09C Topt=25C 0.50 0.45 0.40 0.35 0.30 0.25 0.20 0.15 0.10 0.05 0 Topt=25C 0.25 Output Current IOUT(mA) Output Current IOUT(mA) R x5VT09C VDD=0.85V 0.7V 0 0.2 0.4 VDS(V) 0.6 0.20 0.15 VDD=0.8V 0.10 0.7V 0.05 0 0.8 0 0.02 R x5VT27C 12 VDD=2.5V 2.0V 8 6 1.5V 4 2 0.20 VDD=0.8V 0.15 0.10 0.7V 0.05 0 0 0 18 0.10 Topt=25C 0.25 Output Current IOUT(mA) Output Current IOUT(mA) 14 10 0.08 R x5VT27C Topt=25C 16 0.04 0.06 VDS(V) 0.5 1.0 1.5 VDS(V) 2.0 2.5 0 0.02 0.04 0.06 VDS(V) 0.08 0.10 R x5VT R x5VT45C R x5VT45C Topt=25C VDD=4.0V 35 30 3.5V 25 20 3.0V 15 2.5V 10 2.0V 5 1.5V 0 0 0.5 1.0 Topt=25C 0.25 Output Current IOUT(mA) Output Current IOUT(mA) 40 0.20 VDD=0.8V 0.15 0.7V 0.10 0.05 0 1.5 2.0 2.5 VDS(V) 3.0 3.5 0 4.0 0.02 0.04 0.06 VDS(V) 0.08 0.10 5) Nch Driver Output Current vs. Input Voltage R x5VT27C R x5VT09C VDS=0.5V 0.6 Topt=80C 0.5 0.4 0.3 0.2 25C 0.1 -30C 0 0 0.2 0.4 0.6 0.8 Input Voltage VIN(V) VDS=0.5V 12 Output Current IOUT(mA) Output Current IOUT(mA) 0.7 10 Topt=-30C 8 25C 6 4 80C 2 0 1.0 1.2 0 0.5 1.0 1.5 2.0 Input Voltage VIN(V) 2.5 3.0 R x5VT45C VDS=0.5V Output Current IOUT(mA) 20 Topt=-30C 15 25C 10 80C 5 0 0 1 2 3 4 Input Voltage VIN(V) 5 6 19 R x5VT 6) Pch Driver Output Current vs. Input Voltage R x5VT09C R x5VT27C Topt=25C 1.2 1.0 VDS=0.7V 0.8 0.6 0.5V 0.4 0.2 Topt=25C 3.0 Output Current IOUT(mA) Output Current IOUT(mA) 1.4 VDS=2.1V 2.5 1.5V 2.0 1.0V 1.5 1.0 0.5V 0.5 0 0.0 0 2 4 6 Input Voltage VIN(V) 0 8 1 2 3 4 5 Input Voltage VIN(V) 6 7 R x5VT45C Topt=25C 4 Output Current IOUT(mA) VDS=2.1V 3 1.5V 2 1.0V 0.5V 1 0 0 2 4 6 Input Voltage VIN(V) 8 10 7) Output Delay Time vs. Load Capacitance R x5VT27A R x5VT09A 10 1 0.1 0.01 0.0001 20 100 Output Delay Time tp(ms) Output Delay Time tp(ms) 100 tPLH tPHL 0.001 0.01 Load Capacitance COUT(F) 0.1 10 1 0.1 0.01 0.0001 tPLH tPHL 0.001 0.01 Load Capacitance COUT(F) 0.1 Rx5VT R x5VT45A Output Delay Time tp(ms) 100 10 1 tPLH 0.1 0.01 0.0001 tPHL 0.001 0.01 Load Capacitance COUT(F) 0.1 8) Output Delay Time vs. Input Pin Capacitance R x5VT09A R x5VT27A 100 Output Delay Time tp(ms) Output Delay Time tp(ms) 100 10 1 tPHL tPLH 0.1 0.01 0.0001 0.001 0.01 Input Pin Capacitance CIN(F) 0.1 10 1 tPLH tPHL 0.1 0.01 0.0001 0.001 0.01 Input Pin Capacitance CIN(F) 0.1 R x5VT45A Output Delay Time tp(ms) 100 10 tPLH 1 tPHL 0.1 0.01 0.0001 0.001 0.01 Input Pin Capacitance CIN(F) 0.1 21 R x5VT TYPICAL APPLICATIONS * R x5VT xxA CPU Reset Circuit (Nch Open Drain Output) (1)Input Voltage to R x5VT xxA is the same as (2) Input Voltage to R x5VT xxA is different the input voltage to CPU. from the input voltage to CPU. VDD1 VDD VDD 470k Rx5VTxxA SERIES VDD2 VDD VDD R RESET OUT 470k Rx5VTxxA SERIES CPU GND VDD R RESET OUT CPU GND GND GND * R x5VT xxC CPU Reset Circuit (CMOS Output) VDD VDD VDD Rx5VTxxC SERIES OUT RESET CPU GND GND * R x5VT xxA Output delay Time Circuit 1 * R x5VT xxA Output delay Time Circuit 2 VDD VDD 470k R Rx5VTxxA OUT SERIES VDD VDD RESET 100k VDD GND 470k R1 CPU GND Rx5VTxxA SERIES GND * Memory Back-up Circuit VDD VCC D1 D2 A Y1 Y2 B Y3 G Y4 GND VDD Rx5VTxxC OUT SERIES GND 22 VCC VCC VCC VCC RAM1 RAM2 RAM3 RAM4 GND CS GND CS GND CS GND CS R2 VDD RESET OUT CPU GND Rx5VT * Voltage Level Indicator Circuit (lighted when the power runs out) ( Nch Open Drain Output) VDD VDD OUT Rx5VTxxA SERIES GND * Detector Threshold Changing Circuit (Nch Open Drain Output) VDD Changed Detector Threshold = Ra OUT Rx5VTxxA SERIES VDD + C GND Hysteresis Voltage = Ra + Rb Rb Ra + Rb Rb * (-VDET ) * VHYS Rb (Note) Please note that when the value of Ra becomes excessively large, the detector threshold detected may differ from the value calculated by use of the above formula. * Window Comparator Circuit (Nch Open Drain Output) VDD VDET1 VDET2 VDD VDD Rx5VTxxA OUT SERIES VDET2 VDD OUT VSS Rx5VTxxA OUT SERIES VDET1 GND OUT GND VSS * Excessive Charge Preventing Circuit D1 R1 R2 VDD R4 OUT R3 Rx5VTxxC SERIES Load Solar Battery Light VSS 23 R x5VT APPLICATION HINTS VDD VDD R1 R VDD Rx5VT VDD R2 OUT SERIES GND FIG.9 Rx5VT OUT SERIES GND FIG.10 1. When R x5VT xxC (CMOS Output) is used in FIG. 9, this IC may oscillate by the through-type current at the detection when impedance is connected between Power Source VDD and R x5VT VDD Pin.When R x5VT xxA (Nch Open Drain Output) is used in FIG. 9, and R becomes excessively large, Detector Threshold may be varied because of the voltage drop of the supply current in the IC itself. 2. The connection as shown in FIG. 10 may cause the oscillation in both R x5VT xxC (CMOS Output) and R x5VT xxA (Nch Open Drain Output). 24 Rx5VT PACKAGE DIMENSIONS (Unit: mm) * SOT-89 * TO-92 4.50.1 4.2MAX. 5.2MAX. 1.50.1 0.5MAX. 1 4.25MAX. 2.50.1 3 2 0.40.1 0.8 MIN. 0.7 0.55MAX. o1.0 12.7MAX. 0.6MAX. 5.2MAX. 2.3MAX. 0.4 1.60.2 0.40.1 1 3 2 1.27 2.54 0.42 0.1 0.47 0.1 1.50.1 1.50.1 0.42 0.1 * SOT-23-5 2.90.2 +0.2 1.1 -0.1 1.90.2 (0.95) 0.2 MIN. 4 +0.2 1.6 -0.1 5 0.80.1 1 2 0.40.1 2.80.3 (0.95) 0 to 0.1 3 +0.1 0.15 -0.05 25 R x5VT TAPING SPECIFICATIONS (Unit: mm) * TO-92 * 0.7 0.6 MAX. RR When TZ type tape is pulled out from the direction F 0.5 MAX. 0.55 MAX. : Mark Side * RF 2.3 MAX. 5.2 MAX. 24.7 MAX. 19.00.5 16.00.5 0.70.2 o 4.00.2 12.7 0.3 When TZ type tape is pulled out from the direction B 4.2 MAX. 1.45 MAX. 18.0 +1.0 -0.5 9.00.5 6.00.5 0.5 MAX. 5.2 MAX. 12.7 MAX. 12.7 1.0 2.5 +0.4 -0.1 (Note) 1 User Direction of Feed 2 3 * SOT-89 4.7 5.650.05 2.00.05 5.0 8.00.1 2.5MAX. T2 T1 User Direction of Feed. * SOT-23-5 4.00.1 o 1.5+0.1 -0 3.2 3.3 4.00.1 2.0MAX. TL TR User Direction of Feed. 26 8.00.3 2.00.05 3.50.05 1.750.1 0.30.1 120.3 4.00.1 0.30.1 (Note) When taping is conducted, the pins of TO-92 are subjected to a particular forming. (Note) TZ type tape is not in the form of a reel, but is packed in a zigzag state in a box.Therefore, the tape can be used as either an RF type tape or an RR type tape,depending upon the pulling out direction (B or F). 1.50.1 +0.1 o 1.5 -0 RICOH COMPANY, LTD. ELECTRONIC DEVICES DIVISION HEADQUARTERS 13-1, Himemuro-cho, Ikeda City, Osaka 563-8501, JAPAN Phone 81-727-53-1111 Fax 81-727-53-6011 YOKOHAMA OFFICE (International Sales) 3-2-3, Shin-Yokohama, Kohoku-ku, Yokohama City, Kanagawa 222-8530, JAPAN Phone 81-45-477-1697 Fax 81-45-477-1694 * 1695 http://www.ricoh.co.jp/LSI/english/ RICOH CORPORATION ELECTRONIC DEVICES DIVISION SAN JOSE OFFICE 3001 Orchard Parkway, San Jose, CA 95134-2088, U.S.A. Phone 1-408-432-8800 Fax 1-408-432-8375