AS1915VD-T

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AS1915VD-T is a supervisor integrated circuit (IC) produced by the American semiconductor company, ASI. It is part of a series of fail-safe ICs produced by ASI, and falls under their Power Management IC (PMIC) - Supervisors family. This series of ICs provide added protection against false triggers to ensure device stability and security.

Overview

The AS1915VD-T is a dedicated reset supervisor with temperature monitoring. It features an accurate voltage detector and a reset circuit, with an additional temperature detection pin. It performs an accurate voltage detection and continuous monitoring of the voltage rails, with the ability to detect a power supply failure or out of specification conditions. It also has an additional temperature pin to alert of any temperature related issues, it enables thermal protection for the system. The reset signal is used to improve system reliability. Once an issue has been detected, the reset signal will be asserted and will reset the system controllers.

The AS1915VD-T has two reset thresholds. The lower voltage threshold is typically set at 0.975V. The temperature signal is also monitored and a reset is asserted if the temperature exceeds a certain threshold, which is typically 100°C. The AS1915VD-T is available in the SO16, QFN16 and WLCSP12 packages. The AS1915VD-T has a high accuracy voltage detector, with a range of 1V to 3.6V and a false reset threshold of 0.675V.

Key features

The AS1915VD-T key features include:

• 16-pin SO16, QFN16 and WLCSP12 packages
• Accurate voltage detection with a high accuracy voltage detector
• Reset threshold voltage is typically 0.975V
• Temperature detection pin with a reset activation at 100°C
• Improved system reliability through reset signal on detection of issues

Applications

The AS1915VD-T is suitable for applications where improved reliability and system protection is required. It can be used in a range of applications, including for power management in laptops, battery operated systems, servers and wireless-enabled devices. It can be applied to battery back-up systems, RAM power supply systems, safety systems and machine-protection-systems.

Working Principle

The AS1915VD-T detects an over/under-voltage condition on the main supply and sends an active low reset signal. It compares the input voltage to a given, user-programmable threshold. If the input voltage drops below or above the specified voltage, the reset signal is activated and the system is reset. The AS1915VD-T also has a temperature pin that allows it to detect over-temperature conditions. If the temperature exceeds a given threshold, the reset is asserted. The reset signal is held active until both the voltage and the temperature are within the specified range.

The AS1915VD-T is designed to reduce the chances of system malfunction or failure. It continuously monitors and resets the system on detection of any issues. The IC is designed for a wide operating temperature range and can be used in a variety of operating conditions. It is available in a small, space-saving package and is compatible with modern technologies.

Conclusion

The AS1915VD-T is a high performance IC for power management and system protection. It provides reliable voltage and temperature monitoring with an active-low reset signal. It is available in small packages and is suitable for a range of applications including laptops, battery operated systems, servers and wireless-enabled devices. With its temperature detection pin, the AS1915VD-T can provide thermal protection of the system.

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