MAX6366PKA44+

Overview

The MAX6366PKA44+ is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of up to 5.5 V and features a threshold voltage of 4.40 V. The device provides an active-low, open-drain reset output with a fixed reset delay time of 280 ms. Key functional blocks include a watchdog timer, battery backup switch, and chip enable gating. It draws a typical operating supply current of 15 uA and supports manual reset functionality. The component is housed in an SOT-23-8 package and functions across a temperature range of -40°C to +85°C.

Feature Summary

• Integrates a watchdog timer for system fault recovery
• Includes battery backup switch for power loss detection
• Features chip enable gating for power management control

Applications

• Microprocessor power monitoring systems
• Battery-powered embedded devices
• Industrial control circuits requiring voltage supervision

Procurement Notes

Verify the exact suffix and manufacturer lot codes against official Analog Devices documentation before procurement. Confirm availability status as distribution channels may list obsolete or limited-stock items. Ensure the specific pinout matches the SOT-23-8 footprint requirements for your PCB design. Cross-reference the datasheet revision date to confirm parameter accuracy.

Selection Notes

Select this component when a dedicated watchdog timer and battery backup function are required alongside voltage supervision. The 15 uA quiescent current makes it suitable for battery-operated applications. Verify that the 4.40 V threshold aligns with the monitored rail voltage. Consider the open-drain output compatibility with the target logic levels.

Part Context

This part belongs to the MAX6366P series of low-power uP monitor circuits. The series is characterized by integrated watchdog timers and battery backup switches. These components are designed to provide comprehensive power system management in compact surface-mount packages. The MAX6366P family targets applications requiring reliable reset generation and system protection.

Replacement Considerations

Consult the official MAX6366 datasheet for direct pin-compatible alternatives within the same series. Verify that substitute parts maintain the same threshold voltage and package type. Check for any differences in watchdog timeout periods or battery backup switching characteristics.