MAX6435UK

Overview

The MAX6435UK is a low-power, single-level battery monitor manufactured by Maxim Integrated. It features an internal hysteresis mechanism to prevent output chatter during voltage transitions. The device provides a low-battery output indicator that asserts when the supply voltage drops below a specified threshold and deasserts when it rises above a higher threshold. This functionality allows systems to distinguish between good, weak, and empty battery conditions. It is designed for monitoring single lithium-ion cells or multicell alkaline/NiCd/NiMH power supplies.

Feature Summary

• Internal hysteresis prevents output oscillation
• Single low-battery output indicator
• Supports three-state battery condition detection

Applications

• Monitoring single lithium-ion (Li+) cells
• Monitoring multicell alkaline power supplies
• Monitoring NiCd battery packs
• Monitoring NiMH battery packs

Procurement Notes

Verify the specific suffix of the part number, as variations such as +T indicate tape-and-reel packaging while other suffixes may denote different package types or temperature ranges. Confirm RoHS compliance status if required for your assembly process. Check current availability as older Maxim Integrated products may have limited stock or end-of-life statuses. Ensure the operating temperature range meets your application requirements.

Selection Notes

Select this component when a simple, low-cost solution is needed to monitor a single battery source without complex communication interfaces. It is suitable for applications where system shutdown or mode switching is triggered by low voltage. Consider the specific threshold voltages available in the MAX6427-MAX6438 family to match your battery chemistry. Ensure the package type fits your PCB layout constraints.

Part Context

The MAX6435UK belongs to the MAX6427–MAX6438 family of low-power battery monitors. This family includes both single-level (like MAX6435) and dual-level variants. Single-level devices provide one low-battery output, while dual-level devices offer two outputs for more granular battery state indication. All devices in this series share similar low-power characteristics and are designed for portable electronics.

Replacement Considerations

Other members of the MAX6427–MAX6438 family with compatible thresholds can serve as functional substitutes. For example, MAX6433 or MAX6434 may be used if their specific voltage thresholds align with the design requirements. Dual-level alternatives like MAX6430 or MAX6431 offer additional functionality but require pin compatibility verification.