View ml61c ml61n-series datasheet:

ML61 ML61 Series Positive Voltage Detector Application Features Memory Battery Back-up Circuits CMOS Low Power Consumption : Typical 1.0uA at Microprocessor Reset Circuitry Vin=2.0V Power Failure Detection Selectable Detect Voltage : 1.1V to 7.0V in 0.1V increments Power-on Reset Circuit Highly Accurate : Detect Voltage 1.1V to 1.9V + 3% System Battery Life and Charge Voltage Detect Voltage 2.0V to 7.0V + 2% Monitor Operating Voltage : 0.8V to 10.0V Package Available : SOT23 (150mW), SOT89 (500mW) & TO92 (300mW) General Description The ML61 is a group of high-precision and low-power voltage detectors. The ML61 consists of a highly-accurate and low-power reference voltage source, a comparator, a hysteresis circuit, and an output driver.