MAX6719UTSFD1+T

Introduction

The MAX6719UTSFD1+T, part of Maxim Integrated’s Component Supervisors family, is an ultra-low power and cost-effective, microprocessor supervisor IC. It is designed to monitor and control the power supply of processor cores in SoC and system level designs.

Application Fields

The MAX6719UTSFD1+T offers a wide range of applications such as cellular phone power management, and web tablets and set-top boxes. These applications use the microprocessor supervisor IC to monitor the power supply of processor cores or other components. It can also be used in sensor monitoring, as well as automotive and industrial applications as it is AEC-Q100 qualified for automotive grade temperature performance.

Overview

The MAX6719UTSFD1+T is a single-channel microprocessor supervisor IC with a power supply monitor, three two-level bipolar reset outputs, and a watchdog timer. It is suitable for single-supply applications with a 1.2V to 5.5V supply voltage and comes in an SOT223-4 package. It is rated for -40°C to 105°C operating temperature range and offers low leakage current and is ultra-low power & cost effective.

Working Principle

The working principle of the MAX6719UTSFD1+T is based on the monitoring of the voltage level of a processor core, or any other component of the system. The voltage can be monitored and controlled by adjusting the internal voltage comparator. The comparator is set such that, when the voltage value drops too low, the supervised component is reset. The reset can be done either by generating a high/low voltage level or by generating a pulse.

The reset output can also be triggered by the watchdog timer. The watchdog timer can be used to reset the system when an event does not occur within a certain time interval. During normal operation, it is required to periodically ‘refresh’ the watchdog timer in order for it to remain active and not issue a reset. If the timer is not refreshed, it will cause a reset to occur.

Furthermore, the MAX6719UTSFD1+T also offers a power-on reset feature. The reset output automatically issues a reset when the supply voltage is below the power-on reset threshold. This ensures that the system is put into a known state after the power supply is established.

Conclusion

The MAX6719UTSFD1+T is an ultra-low power, cost-effective, microprocessor supervisor IC. It is suitable for single-supply applications with a 1.2V to 5.5V supply voltage and comes in an SOT223-4 package. This component offers a wide range of applications including cellular phone power management, web tablets and set-top boxes, sensor monitoring, as well as automotive and industrial applications. It is also rated for -40°C to 105°C operating temperature range and offers low leakage current. The working principle of this component is based on the monitoring and controlling of the voltage level of a processor core or other components of the system.