MAX6428EHUR

Overview

The MAX6428EHUR is a low-power, precision voltage supervisor IC from Maxim Integrated. It features a fixed reset threshold of 2.93V and operates within a supply voltage range of 1V to 5.5V. Designed for battery monitoring applications, it supports alkaline, lithium-ion, NiCd, and NiMH chemistries. The device is housed in an SOT-23-3 surface-mount package and functions reliably across an operating temperature range of -40°C to +85°C.

Feature Summary

• Factory-trimmed precision voltage supervision with a fixed 2.93V threshold
• Low-power operation suitable for battery-powered systems
• Supports multiple battery chemistries including Li+, alkaline, and NiMH

Applications

• Battery monitor for single-cell Li+ power supplies
• Voltage supervision for multi-cell alkaline or NiMH/NiCd batteries
• Microcontroller reset circuits in portable electronic devices

Procurement Notes

Verify the manufacturer designation as Analog Devices Inc./Maxim Integrated when sourcing this component. Confirm the specific suffix 'HUR' corresponds to the SOT-23-3 package and tape-and-reel packaging format. Ensure compliance with RoHS standards if required by your application specifications.

Selection Notes

Select this component for applications requiring a precise, fixed-voltage reset threshold without external resistor networks. It is appropriate for space-constrained designs due to its small SOT-23-3 footprint. Consider its low quiescent current for extended battery life requirements in portable electronics.

Part Context

This part belongs to the Maxim Integrated PMIC family, specifically categorized under battery management and voltage supervisors. It serves as a dedicated solution for monitoring battery voltage levels and generating reset signals for microcontrollers in low-power embedded systems.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs before considering alternative components.