
R3117xxx3/4 SERIES
LOW VOLTAGE DETECTOR with SENSE pin
NO.EA-261-110107
1
Notice
R3117xxx3A/C and R3117Qxx4A/C Series may cause the malfunction (miss detection), in the case of its
VDD pin voltage changes very rapidly.Please check the details in the page 11.
OUTLINE
The R3117x 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.
The tolerance of the detector threshold is ±15mV (-VDET <
= 1.5V) or ±1.0% (1.5V< -VDET). Since the sense pin is
separated from the VDD pin of the IC, therefore, even if the sense pin voltage becomes to 0V, the output voltage
keeps its "L" level.
Two output types, Nch open drain type and CMOS type are available.
Three types of packages, SOT-23-5, SC-88A, and DFN(PLP)1010-4 are available.
FEATURES
Supply Current ......................................................................Typ. 0.29μA (VDD=6.0V)
Consumption current through SENSE pin is not included.
Operating Voltage Range......................................................1.0V to 6.0V (-40°C <
= Topt <
= 105°C)
Detector Threshold Range....................................................0.7V to 5.0V (0.1V steps)
(For other voltages, please refer to MARK INFORMATIONS.)
Accuracy Detector Threshold................................................±1.0% (-VDET >
= 1.6V), ±15mV (-VDET<1.6V)
Temperature-Drift Coefficient of Detector Threshold ............Typ. ±30ppm/°C
Output Types.........................................................................Nch Open Drain and CMOS
Packages ..............................................................................DFN(PLP)1010-4, SC-88A, SOT-23-5
Topt=25°C, unless otherwise noted.
APPLICATIONS
CPU and Logic Circuit Reset
Battery Checker
Window Comparator
Wave Shaping Circuit
Battery Back-up Circuit
Power Failure Detector