BQ29401DCT3

Battery Management Overview

The BQ29401DCT3 is a battery management voltage protection integrated circuit designed for secondary protection in lithium-ion battery packs. It supports configurations for two, three, or four cells and operates within a supply voltage range of 4 V to 25 V. The device features a fixed detection threshold voltage of 4.45 V. It is housed in an 8-pin Small Outline Package (SOIC) with dimensions of 2.95 mm length. The component functions as a power supply support circuit with one channel and one function, rated for operation between -25 °C and 85 °C.

Battery Management Feature Summary

• Provides secondary voltage protection for multi-cell lithium-ion battery architectures
• Integrates fixed overvoltage detection threshold functionality
• Operates across standard industrial temperature ranges

Battery Management Applications

• Secondary protection circuits for portable electronic devices
• Battery management systems for consumer electronics
• Voltage monitoring in rechargeable battery packs

Battery Management Procurement Notes

Verify the specific package variant and lead time requirements directly with authorized distributors, as availability may vary. Confirm that the fixed 4.45 V threshold aligns with the target cell chemistry specifications. Ensure compliance with RoHS standards if required by the end product regulations. Check for any obsolescence notices from Texas Instruments before finalizing procurement plans.

Battery Management Selection Notes

Select this component when a dedicated secondary protection stage is required alongside primary management ICs. The fixed threshold simplifies design compared to adjustable variants but limits flexibility for non-standard cell voltages. Consider the SOIC-8 footprint constraints during PCB layout. Evaluate thermal performance within the specified operating temperature range for the intended enclosure environment.

Battery Management Part Context

This part belongs to the BQ294xx series of battery protection devices from Texas Instruments. These components are engineered to complement primary battery management controllers by providing hardware-level overvoltage safeguards. The series targets cost-sensitive applications requiring reliable cell balancing protection without complex digital interfaces.

Battery Management Replacement Considerations

Public confirmed substitute part numbers: BQ29412DCT3RE6, BQ29414DCTRG4.