MCU voltage monitoring - IC, 4.63 V, -40/+125°C, SOT-23

MCU voltage monitoring - IC, 4,63V, -40/+125°C, SOT-23

Description:
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 Power-On Reset (MIN)
- Open-Drain nRESET Output (SGM803)
- Push-Pull nRESET Output (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

Application:
- Microprocessor Systems
- Controllers
- Intelligent Instruments
- Automotive Systems
- Safety Systems
- Portable Instruments