SGM809-SXN3/TR

电压监控，监控阀值电压=2.93V

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 /RESET output 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.

Eight reset threshold voltage options are available suitable for monitoring 1.8V, 2.5V, 3V, 3.3V and 5V supply voltages.

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.

FEATURES

• Precision Voltage Monitor: 1.8V, 2.5V, 3V, 3.3V, 5V

    Options

• Superior Upgrade for MAX803/MAX809/MAX810

    and ADM803/ADM809/ADM810

• Fully Specified over Temperature

• Low Power Consumption 13μA TYP

• Reset Assertion Down to 1V VCC

• 150ms Min Power-On Reset

    Open-Drain /RESETOutput SGM803

    Push-Pull /RESETOutput SGM809

    Push-Pull RESET Output SGM810

• -40℃ to +125℃ Operating Temperature Range

• Small Packaging

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

    SGM809 Available in SOT-23-3 and SOT-23

    SGM810 Available in SOT-23-3 and SOT-23