BQ29700DSER

Battery Management Overview

The BQ29700DSER is a cost-effective voltage and current protection integrated circuit designed for single-cell lithium-ion and lithium-polymer batteries. It operates within a supply voltage range of 4.5 V to 8 V and features a low operating supply current of 4 µA. The device provides second-level protection with an output voltage threshold of 4.275 V. It is housed in a compact WSON-6 package (1.5x1.5 mm) suitable for surface-mount installation. The component supports an operating temperature range from -40°C to +85°C, ensuring reliable performance in various electronic applications requiring battery safety management.

Battery Management Feature Summary

• Integrated overvoltage, undervoltage, overcurrent, and short-circuit protection for single-cell Li-ion and Li-Polymer batteries
• Low quiescent current consumption to minimize battery drain during standby or monitoring phases
• Compact WSON-6 footprint enabling space-constrained PCB layouts for portable devices

Battery Management Applications

• Second-level protection in portable consumer electronics
• Battery packs for medical devices requiring enhanced safety compliance
• Power tools and handheld equipment utilizing single-cell lithium chemistry

Battery Management Procurement Notes

Verify the specific suffix 'DSER' corresponds to the tape-and-reel packaging configuration required for your assembly line. Confirm that the 4.275 V output threshold aligns with your cell's maximum charge voltage specifications. Ensure the WSON-6 thermal pad soldering process meets the manufacturer's reflow profile guidelines to maintain reliability across the specified temperature range.

Battery Management Selection Notes

Select this component when a dedicated secondary protector is needed alongside a primary fuel gauge or controller. It is suitable for designs where low standby current is critical but high-side switching is not required. Compare against the BQ29700DSET if cut-tape sampling is preferred over reel quantities. Consider the BQ29701 series if different protection thresholds are necessary.

Battery Management Part Context

This part belongs to the BQ297xx family of battery protectors from Texas Instruments. These ICs are engineered to provide robust safety mechanisms for single-cell lithium batteries. The family includes variants with different output voltages and packaging options to accommodate diverse system requirements while maintaining consistent protection logic and low power characteristics.

Battery Management Replacement Considerations

The BQ29700DSET is a direct functional equivalent available in cut-tape packaging. For alternative protection levels, consider the BQ29701 series. Verify pinout compatibility before substituting with other single-cell protectors.