MAX6426UK30+T

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PMIC - Supervisors

PMIC - Supervisors are voltage monitor ICs that are designed to effectively protect power supply, serial links, microprocessors and other circuitry against undervoltage and overvoltage conditions. MAX6426UK30+T is a feature-rich supervisor that combines voltage detection, research protection, external reset, and a watchdog timer into one monolithic device.

Application Field

MAX6426UK30+T is ideal for devices powered from single-cell Li-ion battery or regulated power input in a wide range of voltage applications, including low-power handheld . It is well equipped with an on-chip precision microscope that allows the supervisor to detect an input power supply as low as 3V and as high as 6V.

MAX6426UK30+T is most often used for protection of system components such as microprocessors, serial links, and other circuitry. In addition, MAX6426UK30+T is perfect for applications that require microprocessor or memory reboot after a power failure event or watchdog event. Unlike traditional supervisors, which must be enabled each time power is applied, MAX6426UK30+T can be left enabled in a constantly reset mode, preventing the system from starting up and operating incorrectly due to soft/hard-start transitioning power supply events.

Working Principle

The working principle of MAX6426UK30+T involves the monitoring of an input voltage, the activation of overvoltage/undervoltage detection, the detection of a power failure, and the generation of a reset signal. The MAX6426UK30+T can be configured to detect both rising edge and falling edge overvoltage and undervoltage conditions and can detect input/supply/battery voltages as low as 3V and as high as 6V.

When an overvoltage/undervoltage condition is detected, the MAX6426UK30+T generates a reset signal, shutting off the system power supply until the power condition is returned to acceptable levels. In addition to overvoltage/undervoltage reset generation, the MAX6426UK30+T can be configured to generate a reset signal after a watchdog timer has expired. A watchdog timer is triggered when a system operation has not resumed within a specified period of time.

Conclusion

As a feature-rich supervisor IC, MAX6426UK30+T is the best choice for a range of low-power related applications, providing protection from power condition outages and system restarts from external reset and watchdog timer events. MAX6426UK30+T can be used to monitor an input/supply/battery voltage with a wide range of voltage detection, between 3V and 6V. It is one of the few voltage monitor ICs on the market that is designed to provide both overvoltage and undervoltage protection and reset generation.

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