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AS1903C31

AS1903C31 Description

The AS1903C31 is a single-channel supervisor IC designed for monitoring voltage levels in various electronic systems. Manufactured by ams OSRAM, this device is categorized under supervisors and is housed in a compact SOT23-3 package, making it suitable for surface mount applications. The AS1903C31 is engineered to provide reliable voltage monitoring with a threshold voltage of 3.08V and a reset timeout of at least 60 milliseconds. Despite being marked as obsolete, it remains a robust solution for applications requiring precise voltage monitoring.

AS1903C31 Features

• Voltage Monitoring: The AS1903C31 monitors a single voltage rail with a threshold voltage of 3.08V, ensuring that the system operates within specified voltage limits.
• Reset Functionality: It features an active-low reset output, which is essential for initializing systems or recovering from faults. The reset timeout is a minimum of 60 milliseconds, providing ample time for system stabilization.
• Output Type: The output is open drain or open collector, offering flexibility in circuit design and compatibility with various logic families.
• Packaging: Supplied in a tape and reel (TR) package, the AS1903C31 is suitable for automated assembly processes, enhancing manufacturing efficiency.
• Moisture Sensitivity: With a moisture sensitivity level (MSL) of 3 (168 hours), the device is well-suited for environments with moderate humidity, ensuring long-term reliability.
• Compliance: The AS1903C31 is REACH unaffected and classified under ECCN EAR99, simplifying compliance with international regulations.

AS1903C31 Applications

The AS1903C31 is ideal for a variety of applications where reliable voltage monitoring is crucial. Its compact size and surface mount compatibility make it suitable for space-constrained designs. Specific use cases include:

• Power Supply Monitoring: Ensuring that power supplies maintain stable voltage levels, preventing system malfunctions.
• Embedded Systems: Providing a reliable reset mechanism for microcontrollers and other embedded devices.
• Industrial Control Systems: Monitoring voltage levels in control circuits to prevent equipment damage and ensure safe operation.
• Consumer Electronics: Ensuring that electronic devices operate within safe voltage ranges, enhancing product reliability and user safety.

Conclusion of AS1903C31

The AS1903C31, manufactured by ams OSRAM, is a versatile single-channel supervisor IC designed for precise voltage monitoring. Its key features, including a 3.08V threshold, 60ms reset timeout, and open drain/collector output, make it a reliable solution for a wide range of applications. Despite its obsolete status, the AS1903C31 remains a valuable component for ensuring system stability and safety in various electronic systems. Its compact SOT23-3 package and surface mount compatibility further enhance its appeal for modern, space-efficient designs.