MAX6366HKA26+T

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Power management integrated circuits (PMICs) control multiple power domains within an electronic system and provide back-up and protection features. Supervisors are used to monitor power supply and system requirements and to initiate corrective steps when they go outside of their designated levels. The MAX6366HKA26+T is a voltage supervisor with low-power and high-performance features suitable for a variety of applications, including systems that need to save power or operate with minimal hardware support.

Overview

The MAX6366HKA26+T is a low-power, low-profile voltage supervisor designed to monitor a wide array of power supply voltages and system signals. It can be used in various applications from smart phones and tablets to automotive and industrial applications. The chip provides 192mA output current to drive the SUPERVISOR pin output for system reset, combined power-on reset (POR) and brownout (BOR) detection and four active-high supervisor input pins. This chip also includes adjustable window comparators that can serve as reset outputs or as windows for tracking analog system parameters.

Features

The features of the MAX6366HKA26+T include two 200mV (typical) precision window comparators and a ±2.0% voltage accuracy over temperature. This chip also offers an ultra-low 70nA (typical) quiescent supply current and an adjustable reset timeout. Additionally, it features a 1.65V - 5.5V operating voltage range, an active-low push/pull reset, an active-low push/pull reset, a power-fail comparator, and a watchdog timer.

Functional Description

The MAX6366HKA26+T monitors system voltages and signals via a wide range of analog inputs, including a power-fail comparator, two precision comparators, and four supervisor input pins. The voltage monitor’s SUPERVSR pin can be used as an active-low power-on reset (POR) output, a brownout (BOR) detector output, or a reset manager. This chip also contains an active-high programmable watchdog timer that can be configured to generate reset pulses or system warning signals after a specific period of time.

Application Fields

The MAX6366HKA26+T is suitable for use in a wide range of applications, including battery-powered systems and remote monitoring solutions. It is used in medical and industrial systems, automotive applications, smart phones and tablets, and home entertainment equipment. This chip can provide a low power condition monitoring to extend system battery life in portable designs. Additionally, it can be used to protect system microcontrollers or processor boards from harmful power supply conditions or provide warning before system failure.

Working Principle

The MAX6366HKA26+T works by monitoring the input voltages and generating a reset signal when the voltage level falls below a default or programmable threshold. The chip has a power-fail comparator that monitors the voltage levels at the VCC pin and asserts a reset signal if the voltage drops below an externally set power-fail threshold. Additionally, the two precision comparators can be used as reset outputs or as windows for tracking analog system parameters. Finally, the watchdog timer monitor can be programmed to generate a reset signal when it reaches a predetermined duration.

Conclusion

The MAX6366HKA26+T voltage supervisor is a low-power, low-profile device designed to monitor a wide array of power supply voltages and system signals. It is suitable for a variety of applications, from medical and industrial systems to automotive applications and home entertainment equipment. The chip has an ultra-low 70nA (typical) quiescent supply current, two 200mV (typical) precision window comparators and a ±2.0% voltage accuracy over temperature. Additionally, it features a power-fail comparator, an active-high programmable watchdog timer and four supervisor input pins. The MAX6366HKA26+T can monitor the input voltages and generate a reset signal when the voltage level falls below a default or pre-programmed threshold.

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