The SGM803-TXN3L/TR is a voltage detector (voltage supervisor) from SG Micro Corp. designed to monitor voltage levels in electronic circuits. It provides a reset signal when the voltage falls below a specified threshold, crucial for ensuring the reliable operation of microprocessors, microcontrollers, and other digital circuits. This prevents data corruption and system errors during power-up, power-down, or voltage sags.

Applications

• Microprocessor/Microcontroller Reset: Generates a reliable reset signal for microprocessors and microcontrollers during power-up, power-down, or voltage dips, ensuring proper initialization.
• Memory Protection: Prevents data corruption in memory devices by initiating a reset or shutdown sequence when the supply voltage drops below the predefined threshold.
• Power Supply Monitoring: Monitors the output voltage of power supplies and provides an alert or shutdown signal if the voltage deviates from the acceptable range.
• Battery Monitoring: Monitors battery voltage levels in portable devices, providing a low-battery warning or initiating a controlled shutdown to prevent deep discharge and potential damage.
• Industrial Control Systems: Enhances the reliability of critical components in industrial control systems by continuously monitoring voltage levels and triggering appropriate responses to voltage irregularities.

Features

• Precision Voltage Monitoring: Accurately monitors the supply voltage and triggers a reset when it drops below the preset threshold.
• Fixed Threshold Voltage: Features a predefined threshold voltage for voltage monitoring. The 'T' in TXN3L specifies a particular threshold voltage, which must be verified in the datasheet.
• Open-Drain Output: Offers an open-drain output configuration, providing flexibility in interfacing with other circuits and allowing for wired-OR connections.
• Low Quiescent Current: Minimizes power consumption, making it particularly suitable for battery-powered and energy-efficient applications.
• Small Package: Comes in a compact SOT-23 package, reducing board space requirements.

Benefits

• Enhanced System Reliability: Ensures the stable and reliable operation of microprocessors and microcontrollers by providing a timely reset signal when needed.
• Data Integrity Protection: Safeguards data integrity in memory devices by preventing corruption due to voltage fluctuations.
• Power Supply Protection: Protects sensitive circuits from potential damage caused by voltage irregularities.
• Extended Battery Life: The low quiescent current contributes to longer battery life in portable devices, increasing operational uptime.
• Space-Efficient Design: The small package size facilitates compact and efficient circuit designs, optimizing board utilization.

Additional Details

The SGM803-TXN3L/TR is housed in a SOT-23 package. The '/TR' suffix indicates that the components are supplied on tape and reel for automated assembly. The specific threshold voltage corresponding to the 'T' marking needs to be confirmed using the device's datasheet. The 'L' likely indicates a different output structure or feature compared to the SGM803-TXN3, consult the datasheet for specifics. When the input voltage is below the threshold, the device's output remains low. Upon the input voltage exceeding the threshold, the output transitions to a high state after a defined delay. Comprehensive electrical characteristics, timing diagrams, and detailed threshold voltage information can be found in the manufacturer's datasheet.