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AS1903C23

AS1903C23 Description

The AS1903C23 is a single-channel voltage supervisor IC designed for surface-mount applications, manufactured by ams OSRAM. This supervisor IC is housed in a compact SOT23-3 package, making it suitable for space-constrained designs. The AS1903C23 offers a voltage threshold of 2.32V, ensuring reliable monitoring of a single voltage rail. Its reset timeout is a minimum of 60ms, providing sufficient time for system stabilization during power-up or brown-out conditions. The output is configured as open drain or open collector, offering flexibility in circuit design. The reset function is active low, which is a common requirement in many digital systems.

AS1903C23 Features

• Voltage Monitoring: The AS1903C23 monitors a single voltage rail with a threshold of 2.32V, ensuring that the monitored voltage remains within the specified range to maintain system stability.
• Reset Timeout: With a minimum reset timeout of 60ms, the AS1903C23 provides adequate time for system components to stabilize during power transitions, preventing erratic behavior.
• Output Configuration: The open drain or open collector output configuration allows for versatile integration with various digital systems, accommodating different pull-up resistor requirements.
• Mounting Type: The surface-mount package type is ideal for automated assembly processes, enhancing manufacturing efficiency and reliability.
• Moisture Sensitivity Level: Classified as MSL 3 (168 Hours), the AS1903C23 is suitable for standard manufacturing environments, ensuring robustness against moisture exposure during assembly.
• Compliance: The AS1903C23 is REACH unaffected and classified under ECCN EAR99, ensuring compliance with international regulations and facilitating global distribution.
• Packaging: The tape and reel (TR) packaging format is designed for high-volume production, supporting efficient handling and placement in manufacturing lines.

AS1903C23 Applications

The AS1903C23 is ideal for a variety of applications where reliable voltage monitoring and system reset functionality are crucial. Some specific use cases include:

• Consumer Electronics: In devices such as smartphones, tablets, and smart home appliances, the AS1903C23 ensures stable power supply and prevents system crashes during power fluctuations.
• Industrial Control Systems: For monitoring critical power supplies in PLCs (Programmable Logic Controllers) and other industrial automation equipment, the AS1903C23 provides robust protection against voltage anomalies.
• Medical Devices: In medical monitoring equipment and diagnostic tools, the AS1903C23 ensures reliable operation by monitoring power supply integrity and triggering resets if necessary.
• Automotive Electronics: In automotive control units and infotainment systems, the AS1903C23 helps maintain system stability during vehicle start-up and transient voltage conditions.

Conclusion of AS1903C23

The AS1903C23 is a versatile and reliable voltage supervisor IC, offering precise voltage monitoring and robust reset functionality in a compact SOT23-3 package. Its 2.32V threshold and 60ms minimum reset timeout make it suitable for a wide range of applications, from consumer electronics to industrial and automotive systems. The open drain or open collector output configuration provides flexibility in circuit design, while the surface-mount package type supports efficient manufacturing processes. Although the AS1903C23 is now obsolete, its legacy continues to be relevant in systems where its specific features are still required. For new designs, engineers may consider exploring updated alternatives from ams OSRAM or other manufacturers to leverage the latest advancements in voltage supervision technology.