MAX6437UT+

Overview

The MAX6437UT+ is a low-power, single-level battery monitor with an integrated microprocessor reset circuit manufactured by Analog Devices Inc./Maxim Integrated. It operates within a supply voltage range of 1 V to 5.5 V and features a SOT-23-6 surface-mount package. The device monitors battery voltage to provide low-battery alerts and includes an active-low reset output for the microprocessor. It supports manual reset functionality via a push-button input. The component is rated for operation across a temperature range of -40°C to +85°C, ensuring reliability in various electronic applications.

Feature Summary

• Integrates single-level battery monitoring with hysteresis to prevent false triggering during voltage fluctuations
• Includes an independent microprocessor supervisor providing an active-low reset output
• Supports manual reset function allowing system reset via external push-button
• Requires no external components for basic operation, simplifying design

Applications

• Single-cell lithium-ion battery powered systems
• Multi-cell alkaline or NiCd/NiMH battery applications
• Low-power portable electronic devices requiring battery status indication
• Microprocessor-based systems needing voltage supervision and reset control

Procurement Notes

Verify the specific suffix and tape/reel configuration against the official datasheet before ordering. Confirm availability status as distribution channels may indicate limited stock or discontinuation. Ensure the selected variant matches the required package type and operating temperature range for your application environment.

Selection Notes

Select this component when a single low-battery threshold is sufficient for system power management. Consider dual-level variants if separate alerts for low and dead battery states are required. Verify that the SOT-23-6 package dimensions fit the PCB layout constraints. Ensure the input voltage range covers the expected battery discharge curve.

Part Context

This part belongs to the MAX6439–MAX6442 family of ultra-low-power battery monitors. While sharing similar integration levels, the MAX6437UT+ specifically offers a single low-battery output option compared to dual-output counterparts. It is designed for compact designs where space and power consumption are critical factors in portable electronics.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Check for pin-compatible alternatives within the same manufacturer portfolio that offer similar voltage ranges and package types.