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AS1903C26

AS1903C26 Description

The AS1903C26 is a single-channel power supply supervisor IC designed by ams OSRAM, a leading manufacturer in the electronics industry. This device is part of the Power Management (PMIC) category and is housed in a compact SOT23-3 package, making it suitable for a wide range of applications where space is a critical consideration. Despite its small form factor, the AS1903C26 offers robust performance and reliability, ensuring stable power management in various electronic systems.

AS1903C26 Features

The AS1903C26 features a voltage threshold of 2.63V, providing precise monitoring of a single voltage rail. This feature is crucial for systems that require accurate voltage level detection to ensure proper operation and prevent damage due to undervoltage conditions. The device also includes a reset timeout of at least 60ms, ensuring that the system has sufficient time to stabilize after a power event before the reset signal is released.

One of the unique features of the AS1903C26 is its open drain or open collector output configuration, which offers flexibility in system design. This allows designers to easily integrate the supervisor IC with various types of reset circuits and microcontrollers. The reset signal is active low, which is a common requirement in many digital systems, ensuring compatibility with standard reset logic.

The AS1903C26 is packaged in a surface-mount technology (SMT) format, specifically in a tape and reel (TR) package. This packaging method is ideal for automated assembly processes, reducing production costs and increasing manufacturing efficiency. The device has a moisture sensitivity level (MSL) of 3, which means it can be safely stored for up to 168 hours in a controlled environment before assembly, ensuring reliability and longevity.

AS1903C26 Applications

The AS1903C26 is well-suited for a variety of applications where reliable power monitoring and reset functionality are essential. Its compact size and single-channel monitoring capability make it ideal for use in embedded systems, consumer electronics, and industrial control units. Some specific use cases include:

• Embedded Systems: In microcontroller-based designs, the AS1903C26 can monitor the power supply voltage to ensure the microcontroller operates within safe voltage levels, preventing erratic behavior or damage due to power fluctuations.
• Consumer Electronics: In devices such as smartphones, tablets, and IoT devices, the AS1903C26 can provide reliable power monitoring and reset functions, ensuring stable operation and enhancing user experience.
• Industrial Control Units: In industrial applications, the AS1903C26 can monitor critical power supplies in PLCs (Programmable Logic Controllers) and other control systems, ensuring reliable operation and minimizing downtime.

Conclusion of AS1903C26

The AS1903C26 is a versatile and reliable power supply supervisor IC that offers precise voltage monitoring and reset functionality in a compact package. Its open drain or open collector output configuration and active low reset signal make it highly compatible with a wide range of electronic systems. The device's surface-mount packaging and moisture sensitivity level ensure ease of integration and reliability in various manufacturing environments.

While the AS1903C26 is currently marked as obsolete, it remains a valuable component for existing designs and can be a reliable choice for new projects that require a single-channel power supply supervisor. For applications where space is limited and precise power monitoring is essential, the AS1903C26 stands out as a robust and efficient solution.