SGM812.pdf
No.10901
● Superior Upgrade for MAX811/MAX812 and ADM811/ADM812
● Specified Over Temperature
● Low Power Consumption (13μA TYP)
● Precision Voltage Monitor: 2.5V, 3V, 3.3V, 5V Options
● Reset Assertion Down to 1V VCC
● 150ms Min Power-On Reset
Logic High RESET Output (SGM812)
● Manual Reset Input
● Green SOT-143 and SOT-23-5 Packages
The SGM811/SGM812 supervisory circuits monitor the power supply voltage in microprocessor and digital systems. The SGM811/SGM812 is designed to monitor seven different voltages; these voltages have been selected for the effective monitoring of 2.5V, 3V, 3.3V, and 5V supply voltage levels.
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 SGM811 provides an active low reset signal ( RESET) while the SGM812 provides an active high signal (RESET) output.
