MAX16998BAUA/V+

Introduction

PMIC (Power Management IC) is an integrated circuit used to provide power to a wide range of application fields. PMICs are comprised of an array of specialized power management components including regulators, supervisors, and other peripheral functions needed to distribute power such as switching, protection, and monitoring. In particular, supervisors are critical components of a PMIC providing device reset capabilities to safeguard the device under extreme conditions. The MAX16998BAUA/V+ is a power supervisor device that provides device reset, supervisor, and voltage supervisory functions.

MAX16998BAUA/V+ Application Field and Working Principle

The MAX16998BAUA/V+ is a versatile device intended for a variety of application fields such as automotive, industrial, and consumer electronics. They are suitable for microcontroller and microprocessor systems that require an early detection of faults and system reset. This power supervisor device contains a precision monitor and an adjustable voltage supervisor with two watchdog timers, two reset outputs, two window watchdog timers and two voltage supervisor windows, providing a reliable solution for monitoring, reset, and sequenced power-up applications.

The MAX16998BAUA/V+ operates by monitoring the voltage level of the system with its voltage supervisor. The voltage supervisor has two adjustable voltage thresholds (LV1, LV2) and two adjustable reset time delay periods (TO, TR). If the voltage level drops below the LV1 threshold, the device will activate a reset timer (TO) and initiate a reset delay period to permit the system to return to its nominal output level. If the voltage level stays below the LV1 threshold for longer than the reset delay period, the device will then activate the full reset (TR) and initiate power down. Similarly, if the voltage level rises above the LV2 threshold, the device will activate the second reset timer (TR) and then initiate a reset delay period to permit the system to return to its nominal output level. The full reset (TR) will be activated if the voltage remains above the LV2 threshold for longer than the reset delay period.

The device also includes two window watchdog timers and two voltage supervisor windows that can be used to detect voltage excursions outside of a specified window. If the voltage remains outside of the predefined window for longer than the preset time, the device will initiate a reset. In addition, the MAX16998BAUA/V+ also includes two watchdog reset timers that can be used to monitor system conditions. These watchdog timers monitor the activity of the system and if the system fails to perform predefined actions in the allotted time delay, a reset is triggered. The combination of voltage monitoring and window watchdog timers provide a reliable solution for fault detection and system reset applications.

Conclusion

The MAX16998BAUA/V+ is a versatile power supervisor device designed for a variety of application fields including automotive, industrial, and consumer electronics. The device provides a reliable solution for monitoring, reset, and sequenced power-up applications with its precision monitor and adjustable voltage supervisor. In addition, the device also includes two window watchdog timers and two voltage supervisor windows for detecting voltage excursions outside of a specified window and two watchdog reset timers for monitoring system conditions.