The SGM803-SXN3/TR is a voltage detector (voltage supervisor) manufactured by SG Micro Corp. It is designed to monitor voltage levels in electronic circuits and provide a reset signal when the voltage falls below a certain threshold. This functionality is crucial in ensuring the proper operation and preventing data corruption in microprocessors, microcontrollers, and other digital circuits.

Applications

• Microprocessor/Microcontroller Reset: Ensures a reliable reset for microprocessors and microcontrollers during power-up, power-down, or voltage sags.
• Memory Protection: Prevents data corruption in memory devices by triggering a reset or shutdown when the supply voltage falls below the specified level.
• Power Supply Monitoring: Monitors the output voltage of power supplies and provides an alert or shutdown signal if the voltage is out of range.
• Battery Monitoring: Monitors battery voltage levels in portable devices and provides a low-battery warning or shutdown signal.
• Industrial Control Systems: Used in industrial control systems to ensure the reliable operation of critical components.

Features

• Precision Voltage Monitoring: Accurately monitors the supply voltage and triggers a reset when it falls below the threshold.
• Fixed Threshold Voltage: Provides a predefined threshold voltage for voltage monitoring. The 'S' in SXN3 indicates a specific threshold voltage, which must be verified in the datasheet.
• Open-Drain Output: Features an open-drain output, allowing for flexible interfacing with other circuits.
• Low Quiescent Current: Minimizes power consumption, making it suitable for battery-powered applications.
• Small Package: Available in a small package (SOT-23), reducing board space requirements.

Benefits

• Reliable System Operation: Ensures the reliable operation of microprocessors and microcontrollers by providing a reset signal when needed.
• Data Protection: Prevents data corruption in memory devices.
• Power Supply Protection: Protects sensitive circuits from voltage fluctuations.
• Extended Battery Life: Low quiescent current extends battery life in portable devices.
• Reduced Board Space: Small package minimizes board space requirements.

Additional Details

The SGM803-SXN3/TR is available in a SOT-23 package. The '/TR' suffix indicates that the components are tape and reel for automated assembly. The specific threshold voltage ('S') is determined by the variant of the SGM803. Consult the datasheet for the precise threshold voltage value. It is designed for a specific supply voltage range. The device's output remains low as long as the input voltage is below the threshold voltage. When the input voltage rises above the threshold voltage, the output goes high after a certain delay time. Detailed electrical characteristics and timing diagrams can be found in the manufacturer's datasheet.