BQ29419PWR

Battery Management Overview

The BQ29419PWR is a battery protection integrated circuit designed for lithium-ion batteries with two, three, or four cells in series. It provides secondary overvoltage protection by disconnecting the charge FET when cell voltage exceeds the threshold. The device operates within a supply voltage range of 4 V to 25 V and supports an output voltage of 4.3 V. It is housed in an 8-TSSOP package and functions reliably across a temperature range of -40°C to +110°C.

Battery Management Feature Summary

• Provides secondary overvoltage protection for multi-cell lithium-ion battery packs
• Automatically disconnects the charge field-effect transistor upon detecting overvoltage conditions
• Operates within a wide power supply voltage range suitable for various battery configurations

Battery Management Applications

• Secondary protection circuits for portable electronic devices
• Battery management systems in consumer electronics
• Power tool battery packs requiring overvoltage safeguards

Battery Management Procurement Notes

Verify that the specific part number matches the required package type and thermal specifications for your application. Confirm compatibility with the target battery cell count and ensure the operating temperature range aligns with environmental requirements. Check for RoHS compliance status if regulatory adherence is necessary for the final product assembly.

Battery Management Selection Notes

Select this component when secondary overvoltage protection is required for 2S to 4S lithium-ion battery architectures. Ensure the design accommodates the fixed threshold characteristics and the TSSOP-8 footprint constraints. Consider the maximum operating temperature limits and verify that the interface logic meets the system's control requirements.

Battery Management Part Context

This component belongs to the BQ2941x family of battery protection ICs from Texas Instruments. It serves as a specialized solution for safeguarding lithium-ion battery packs against overvoltage events. The device complements primary protection mechanisms by providing an additional layer of safety through automatic charge path disconnection.

Battery Management Replacement Considerations

The BQ29419PWRG4 is a verified equivalent variant within the same product line. Verify pinout compatibility and electrical parameter alignment before substitution. Ensure that any alternative component meets the same package dimensions and thermal performance standards.