MAX6365HKA46+

Overview

The MAX6365HKA46+ is a low-power microprocessor supervisory circuit manufactured by Analog Devices Inc. (Maxim Integrated). It operates within a supply voltage range of 1.2 V to 5.5 V and features an adjustable overvoltage threshold set at 4.63 V. The device provides a manual reset input, a battery backup switch, and chip-enable gating functionality. It utilizes an SOT-23-8 surface-mount package and delivers an active-high, open-drain output. The reset timeout period is fixed at 280 ms, with a quiescent current consumption of 15 µA. It functions reliably across an industrial temperature range from -40°C to +85°C.

Feature Summary

• Integrates battery backup switching and chip-enable gating for system power management
• Provides manual reset capability alongside automatic voltage supervision
• Features adjustable overvoltage detection thresholds for flexible monitoring

Applications

• Portable electronic devices requiring low-power voltage supervision
• Battery-operated systems utilizing backup power switching
• Embedded microprocessor circuits needing manual reset inputs

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels due to potential availability constraints. Confirm the specific suffix matches the required electrical characteristics, as variations exist within the MAX6365 family. Ensure compliance with RoHS directives if applicable to your region. Cross-reference the datasheet revision history for any recent manufacturing changes that may affect pin compatibility or performance specifications.

Selection Notes

Select this component when adjustable overvoltage protection is required alongside standard under-voltage supervision. The inclusion of a manual reset pin distinguishes it from simpler supervisor ICs lacking user intervention capabilities. Consider the SOT-23-8 footprint for space-constrained designs. Evaluate the 15 µA quiescent current against strict power budget requirements for battery-powered applications.

Part Context

This part belongs to the MAX6365L/H series of low-power uP supervisors. It shares functional similarities with the MAX6365LKA46+ but differs in output polarity and threshold adjustability. The H-series variant typically offers different output configurations compared to the L-series. It serves as a critical interface between power rails and logic circuits, ensuring stable operation during power transitions.

Replacement Considerations

The MAX6365LKA46+ is a related family member but features an active-low push-pull output and fixed thresholds, differing significantly in interface logic. Verify that the target application can accommodate the active-high open-drain output configuration before substituting.