● Precision Voltage Monitor: 1.8V, 2.5V, 3V, 3.3V, 5V Options

● Fully Specified over Temperature

● Low Power Consumption: 13μA (TYP)

● Reset Assertion Down to 1V VCC

● 150ms Power-On Reset (MIN)

   Open-Drain RESETOutput (SGM803)

● -40℃ to +125℃ Operating Temperature Range

● Small Packaging

   SGM803 Available in SOT-23-3 and SOT-23

The SGM803/SGM809/SGM810 supervisory circuits monitor the power supply voltage in microprocessor and digital systems. They provide a reset output during power-up, power-down and brownout conditions. On power-up, an internal timer holds reset asserted for 240ms. This holds the microprocessor in a reset state until conditions have stabilized. The RESEToutput remains operational with VCC as low as 1V. The SGM803/ SGM809 provides an active low reset signal (RESET) while the SGM810 provides an active high signal (RESET) output. The SGM809/SGM810 has push-pull outputs, whereas the SGM803 has an open-drain output, which requires an external pull-up resistor.

The reset comparator features built-in glitch immunity, making it immune to fast transients on VCC. The low supply current of typically 13μA makes the SGM803/SGM809/SGM810 ideal for use in portable, battery operated equipment. All are specified over the extended -40℃ to +125℃ temperature range.