Ricoh R3111x Series User Manual

R3111x SERIES LOW VOLTAGE DETECTOR NO.EA-056-120423 1 OUTLINE The R3111x series are CMOS-based voltage detector ICs with high detector threshold ac

R3111x 10 ELECTRICAL CHARACTERISTICS BY DETECTOR THRESHOLD • R3111x09x to R3111x60x Detector Threshold Detector Threshold Hysteresis Supply Current

R3111x 11 Output Current 1 Output Current 2 *3 Output Delay Time Minimum Operating Voltage Detector Threshold Temperature Coefficient IOUT1[mA] IO

R3111x 12 OPERATION • Operation of R3111xxxxA Vref Ra Rb Rc VDDOUTGNDTr.1 NchComparator OUT pin should be pulled-up toVDD or an external voltage l

R3111x 13 • Operation of R3111xxxxB Vref Ra Rb Rc VDDOUTGNDTr.1 NchComparator OUT pin should be pulled-up toVDD or an external voltage level. Block

R3111x 14 • Operation of R3111xxxxC Vref Ra Rb Rc VDD OUT GND Tr.1NchPchComparator Block Diagram (R3111xxxxC) tPLHGND GND VDDL -VDET +VDET Dete

R3111x 15 TEST CIRCUITS GND VDD VIN ISS R3111x Series OUT GND VDD VINR3111xSeriesOUT 470kΩ 5V VOUT Supply Current Test Circuit Detector Thre

R3111x 16 TYPICAL CHARACTERISTICS 1) Supply Current vs. Input Voltage R3111x09xx R3111x27xx Topt=85°C25°C-40°C2.52.01.51.00.50.0Input Voltage V

R3111x 17 R3111x45xx 4.84.74.64.54.4+VDET-VDETTemperature Topt(°C)-60 0 20406080-40 -20 100Detector Threshold -VDET(V) 3) Output Voltage vs. I

R3111x 18 R3111x45xC R3111x45xA Topt=-40°C25°C85°C6543201Input Voltage VIN(V)0231654Output Voltage VOUT(V) 5V Pull-up 470kΩ6543201Input Voltage

R3111x 19 R3111x45xx R3111x45xx Topt=25°CVDD=4.5V4.0V3.5V3.0V2.5V2.0V1.5V6050403020010VDS(V)0 0.5 1 1.5 2 2.5 3 43.5 4.5Output Current IOUT(mA) V

R3111x 2 BLOCK DIAGRAMS R3111xxxxA R3111xxxxB OUTVDD Vref GND OUTVDD VrefGND R3111xxxxC OUTVDD GNDVref

R3111x 20 6) Pch Driver Output Current vs. Input Voltage R3111x09xC R3111x27xC Topt=25°CVDS=0.7V0.5V1.41.21.00.80.60.40.00.2 Input Voltage VIN(V

R3111x 21 R3111x45xA tPLHtPHL1001010.10.010.001Load Capacitance COUT(μF)0.0001 0.010.001 0.1Output Delay Time tP(ms) 8) Output Delay Time vs.

R3111x 22 TYPICAL APPLICATION • R3111xxxxA CPU Reset Circuit (Nch Open Drain Output) Case 1. Input Voltage to R3111xxxxA is equal to Input Voltage

R3111x 23 • Voltage level Indicator Circuit (lighted when the power runs out) (Nch Open Drain Output) R3111xxxxA Series VDD GND OUT VDD • Detec

R3111x 24 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 a

RICOH COMPANY, LTD.Electronic Devices Company● Higashi-Shinagawa Office (International Sales)3-32-3, Higashi-Shinagawa, Shinagawa-ku, Tokyo 140-8655, Ja

R3111x 3 SELECTION GUIDE The package type, the detector threshold, the output type and the taping type for the ICs can be selected at the users’ req

R3111x 4 PIN CONFIGURATIONS z TO-92 z SOT-89 z SOT-23-3 z SOT-23-5 3 12 (mark side) 312(mark side) 123(mark side) 123 4 5(mark side) z SC

R3111x 5 ABSOLUTE MAXIMUM RATINGS Symbol Item Rating Unit VDD Supply Voltage 12 V Output Voltage (CMOS) VSS−0.3 to VDD+0.3 VOUT Output Voltage (N

R3111x 6 ELECTRICAL CHARACTERISTICS • R3111xxxxA Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold -VDET × 0.98 -VD

R3111x 7 • R3111xxxxB Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold -VDET × 0.98 -VDET × 1.02V VHYS Detector Th

R3111x 8 • R3111xxxxC Topt=25°C Symbol Item Conditions Min. Typ. Max. Unit -VDET Detector Threshold -VDET × 0.98 -VDET × 1.02V VHYS Detector Th

R3111x 9 TIMING CHART Detector ThresholdtPLHtPLHtPLHGND GND VDDL-VDET+VDETDetector Threshold Released Voltage Minimum Operating VoltagePull-up Vo