GENERAL DEscriptION

The SGM836 family can monitor system voltages from 0.4V to 5V. When the detection voltage drops below a preset threshold (VIT) or the manual reset (nMR) pin is driven low, the open-drain nRESET output is asserted. After the detection voltage and nMR voltage return above their respective thresholds, the nRESET output remains low within the user-adjustable delay time.

The SGM836 uses a precision reference to achieve 1% threshold accuracy. The fixed reset timeout period can be set to 20ms by leaving the CT pin open and can be set to 300ms by connecting the CT pin to VDD through a resistor. The programmable reset timeout period can be set from 1.25ms to 10s through an external capacitor connected to the CT pin. Low current makes the SGM836 very suitable for battery-powered applications.

The SGM836 is available in Green SOT-23-6 and TDFN-2×2-6AL packages. It is fully specified over a temperature range of -40℃ to +125℃.

PIN CONFIGURATIONS

FEATURES

• Adjustable Reset Timeout Period: 1.25ms to 10s

• Low Current: 0.6μA (TYP)

• High Threshold Accuracy: 1% (TYP)

• Factory-Set Detection Voltages: 0.9V to 5V

• Adjustable Detection Voltage Down to 0.4V

• Manual Reset (nMR) Input

• Open-Drain nRESET Output

• Available in Green SOT-23-6 and TDFN-2×2-6AL Packages

APPLICATIONS

Computers

Portable Equipment

Automotive Equipment

Intelligent Instruments

Microprocessor Systems

Critical μP Power Monitoring