R3111Q251A-TR RICOH Co.,Ltd., R3111Q251A-TR Datasheet
R3111Q251A-TR
Available stocks
Related parts for R3111Q251A-TR
R3111Q251A-TR Summary of contents
Page 1
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 ...
Page 2
TIMING CHART Supply Voltage (V Output Voltage (OUT) DEFINITION OF OUTPUT DELAY TIME Output Delay Time t is defined as follows: PLH 1. In the case of Nch Open Drain Output: Under the condition of the output pin (OUT) is ...
Page 3
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 Code Designation of ...
Page 4
PIN CONFIGURATION TO-92 (mark side PIN DESCRIPTION TO-92 Pin No. Symbol GND 3 OUT ABSOLUTE MAXIMUM RATINGS Symbol OUT1 V OUT2 I OUT Topt Tstg Tsolder ...
Page 5
ELECTRICAL CHARACTERISTICS R3111x091A/C Symbol -V Detector Threshold DET V Detector Threshold Hysteresis HYS I Supply Current SS V Maximum Operating Voltage DDH Minimum Operating V DDL Voltage* Output Current I OUT (Driver Output Pin) t Output Delay Time* PLH Detector ...
Page 6
R3111x271A/C Symbol -V Detector Threshold DET V Detector Threshold Hysteresis HYS I Supply Current SS V Maximum Operating Voltage DDH Minimum Operating V DDL Voltage* Output Current I OUT (Driver Output Pin) t Output Delay Time* PLH Detector Threshold Temperature ...
Page 7
R3111x451A/C Symbol -V Detector Threshold DET V Detector Threshold Hysteresis HYS I Supply Current SS V Maximum Operating Voltage DDH Minimum Operating V DDL Voltage* Output Current I OUT (Driver Output Pin) t Output Delay Time* PLH Detector Threshold Temperature ...
Page 8
ELECTRICAL CHARACTERISRICS BY DETECTOR THRESHOLD R3111x09x to R3111x60x Detector Threshold Part -V [V] DET Number MIN. TYP. MAX. R3111x091x 0.882 0.900 0.918 R3111x101x 0.980 1.000 1.020 R3111x111x 1.078 1.100 1.122 R3111x121x 1.176 1.200 1.224 R3111x131x 1.274 1.300 1.326 R3111x141x 1.372 ...
Page 9
Output Current 1 I [mA] OUT1 Condition MIN. TYP. Nch V =0.05V 0.01 0. =0.7V DD Rev.1.10 Output Delay Output Current 2 I [mA] OUT2 Condition MIN. TYP 0.05 0.5 0.85V 0.2 ...
Page 10
OPERATION Vref Released Voltage(+V ) DET Supply Voltage Detector Threshold(-V ) DET ( Minimum Operating Voltage GND Output Voltage (V ) OUT GND Step 1. Output Voltage is equal to Supply Voltage (V Step 2. At Point “A”, ...
Page 11
TEST CIRCUITS R3111 Series OUT GND Figure 3. Supply Current Test Circuit V DD R3111 Series OUT GND Figure 5. Nch Driver Output Current Test Circuit +V +2.0V DET 0.7V ...
Page 12
TYPICAL CHARACTERISTICS 1) Supply Current vs. Input Voltage R3111x091C 2.5 2.0 1.5 1.0 0.5 0 Input Voltage V R3111x451C 2.0 1.5 1.0 0.5 0 Input Voltage V 2) Detector Threshold Hysteresis vs. Temperature R3111x091C ...
Page 13
R3111x451C 4.8 4.7 +V DET 4.6 4.5 -V DET 4.4 -60 -40 - Temperature Topt Output Voltage vs. Input Voltage R3111x091C 1.6 1.4 1.2 1 0.4 Topt=-40 C 0.2 0.0 ...
Page 14
R3111x451C Topt=- Input Voltage V 4) Nch Driver Output Current vs. V R3111x091C 700 600 V =0.85V DD 500 400 300 200 0.7V 100 ...
Page 15
R3111x451C 2. 0.5 1 1.5 2 2 Nch Driver Output Current vs. Input Voltage R3111x091C 900 800 700 600 500 Topt=-85 C 400 300 25 C 200 ...
Page 16
Pch Driver Output Current vs. Input Voltage R3111x091C 1.4 1.2 V 1.0 0.8 0.6 0.5V 0.4 0.2 0 Input Voltage V R3111x451C 4.5 4.0 3 3.0 2.5 2.0 1.5 1.0 0.5 0 ...
Page 17
R3111x451A 100 10 t PLH 1 0.1 t PHL 0.01 0.001 0.0001 0.001 Load Capacitance C 8) Output Delay Time vs. Input Pin Capacitance R3111x091A 100 10 t PLH 1 0.1 t PHL 0.01 0.001 0.0001 0.001 Input Pin Capacitance ...
Page 18
TYPICAL APPLICATION R3111xxx1A CPU Reset Circuit (Nch Open Drain Output) Case 1.Input Voltage to R3111xxx1A is equal to Input Voltage to CPU V DD 470K R R3111 1A XXX RESET SERIES OUT GND R3111xxx1A CPU Reset Circuit CMOS Output V ...
Page 19
Voltage level Indicator Circuit (lighted when the power runs out) (Nch Open Drain Output R3111 1A XXX SERIES OUT GND Detector Threshold Adjustable Circuit (Nch Open Drain Type Output) V OUT DD R3111 1A XXX SERIES + GND ...
Page 20
R3111 SERIES GND Figure Figure 9, When R3111xxx1C is used, and if an impedance is connected in between Voltage Supplier and the V Pin of R3111xxx1C Series, the operation might be unstable ...