BQ24055DSST

Battery Chargers Overview

The BQ24055 is a highly integrated Li-Ion battery charger and system power path manager designed for portable applications. It features an input current limit controller that optimizes charging from USB or wall adapters. The device includes a linear regulator for system load sharing, ensuring continuous operation during charging. Key electrical parameters include a 5.8V to 28V input voltage range, a programmable charge current up to 1.5A, and a 4.2V single-cell Li-Ion output. It supports trickle charging for deeply discharged batteries and offers thermal regulation to manage junction temperature.

Battery Chargers Feature Summary

• Integrated system power path management for seamless transition between adapter and battery power
• Input current limiting capability compatible with standard USB ports and wall adapters
• Thermal regulation feature to automatically reduce charge current based on die temperature
• Programmable charge termination and safety timers for enhanced battery protection

Battery Chargers Applications

• Portable media players and MP3 devices
• Personal digital assistants (PDAs) and handheld computers
• Mobile phones and smartphones
• Digital cameras and camcorders
• GPS navigation devices

Battery Chargers Procurement Notes

Verify the exact suffix DSST against the manufacturer's official datasheet to confirm package type and tape/reel specifications. Ensure compatibility with your specific PCB footprint and thermal requirements. Cross-reference part numbers with authorized distributors to avoid counterfeit components. Confirm that the device meets all relevant regulatory standards for your target market before finalizing procurement decisions.

Battery Chargers Selection Notes

Select this component when a compact solution for single-cell Li-Ion charging with integrated power path management is required. It is suitable for designs where space constraints prevent the use of discrete charge controllers and load switches. Consider its input voltage range and maximum charge current capabilities relative to the available power source. Evaluate the thermal performance in your specific enclosure design to ensure adequate heat dissipation without external heatsinks.

Battery Chargers Part Context

The BQ24055 belongs to Texas Instruments' family of single-cell lithium-ion battery chargers. It is designed to replace multiple discrete components by integrating the charger, power path manager, and linear regulator into a single small-footprint package. This integration reduces board space and simplifies the bill of materials for portable electronic devices requiring efficient power management from USB or AC sources.

Battery Chargers Replacement Considerations

Consult the official TI replacement guide for verified substitutes. Common alternatives may include the BQ24056 or BQ24072 series, depending on specific current and interface requirements. Verify pin-to-pin compatibility and electrical parameter alignment before substitution.

Battery Chargers FAQ

Does the BQ24055 support fast charging protocols?

No, the BQ24055 is a linear charger and does not support proprietary fast charging protocols like Qualcomm Quick Charge or USB Power Delivery. It provides standard constant-current/constant-voltage charging.

What is the minimum input voltage required for operation?

The device operates with an input voltage range starting from 5.8V. It is designed to work with standard 5V USB sources when combined with appropriate circuitry, but the internal regulator requires at least 5.8V for proper regulation.