BQ29411DCTR

Battery Management Overview

The BQ29411DCTR is a secondary over-voltage protection device designed for lithium-ion and lithium-polymer battery packs consisting of two to four cells in series. It operates within a supply voltage range of 4 V to 25 V and features a detection threshold of 4.40 V. The component is housed in an 8-pin SM-8 package and supports surface-mount installation. It functions reliably across an extended temperature range from -40 °C to +110 °C, ensuring robust protection against over-voltage conditions in portable electronic applications.

Battery Management Feature Summary

• Provides secondary over-voltage protection for multi-cell lithium-ion and lithium-polymer battery configurations
• Features a fixed detection threshold voltage specifically calibrated for standard cell chemistry limits
• Operates with low quiescent current to minimize power consumption during standby states

Battery Management Applications

• Secondary protection circuits for portable consumer electronics battery packs
• Safety monitoring systems for medical devices utilizing multi-cell lithium batteries
• Power management modules in industrial equipment requiring redundant over-voltage safeguards

Battery Management Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel specifications. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the manufacturer part number with official datasheets to confirm pinout compatibility and electrical characteristics before integration into production designs.

Battery Management Selection Notes

Select this component when designing secondary protection stages for 2S to 4S lithium-based battery architectures. It is suitable for applications requiring a fixed 4.40 V over-voltage threshold. Consider the SM-8 package constraints and operating temperature range relative to the final product's environmental exposure and space limitations.

Battery Management Part Context

This device belongs to the BQ294xx family of battery protection ICs from Texas Instruments. These components are engineered to provide reliable secondary protection for rechargeable battery systems. The BQ29411 variant specifically addresses over-voltage scenarios, complementing primary protection mechanisms to enhance overall system safety and longevity.

Battery Management Replacement Considerations

BQ29411DCTRG4 is a verified equivalent offering identical functionality and specifications.