Nisshinbo Micro Devices R3118N281A-TR-FE, 1 Linear Voltage, Voltage Regulator 20mA, -0.3 → 7.0 V 5-Pin, SOT-23-5

The Nisshinbo Micro Devices Voltage Detector IC comes with individual sense pin, high detector threshold accuracy and delay time, and ultra low supply current, which can be operated at an extremely low voltage and is used for system reset as an example. It consists of a voltage reference unit, a hysteresis comparator, resistors net for detector threshold setting, an output driver transistor, and a delay circuit. VDD supply pin for the IC and voltage supervisory sense pin are individual, therefore the output pin can keep "L" level even if the sense pin voltage is going down to 0 V, or there is no indefinite range for the sense pin.

Supply current is Typical 0.4 μA
Operating voltage range is 1 V to 6 V
Operating temperature ranges from −40°C to 85°C