BQ25040DQCT

Battery Chargers Overview

The BQ25040DQCT is a single-input, single-cell lithium-ion battery charger from Texas Instruments. It integrates a 1.1A linear charge regulator and a 50mA low-dropout (LDO) regulator. The device operates within an input voltage range of 4.5V to 6.5V and provides a regulated output voltage of 4.2V for the battery. It is housed in a compact WSON-10 package with dimensions of 3mm x 2mm. The component supports surface mount installation and functions across a junction temperature range of -40°C to +125°C.

Battery Chargers Feature Summary

• Integrates a 1.1A linear charge regulator for efficient single-cell lithium-ion battery charging
• Includes a dedicated 50mA LDO regulator to power auxiliary system loads during charging
• Supports single-input operation with a wide input voltage range of 4.5V to 6.5V
• Designed for space-constrained applications using a small 3x2mm WSON-10 package

Battery Chargers Applications

• Portable consumer electronics requiring single-cell Li-ion power solutions
• Handheld devices utilizing USB or wall adapter power inputs
• Systems needing simultaneous battery charging and load powering via integrated LDO
• Compact IoT modules and wearable technology with strict size constraints

Battery Chargers Procurement Notes

Verify the specific suffix DQCT corresponds to the WSON-10 package variant when sourcing. Confirm that the required input voltage aligns with the 4.5V to 6.5V operational window. Ensure thermal management strategies account for the maximum junction temperature rating of +125°C. Cross-reference the datasheet for pin configuration compatibility with existing PCB layouts before finalizing procurement orders.

Battery Chargers Selection Notes

Select this component when a combined charging and LDO solution is required in a minimal footprint. It is suitable for designs where input power comes from standard 5V sources like USB ports. Consider the 1.1A current limit for smaller battery capacities. Evaluate thermal performance under continuous load conditions given the exposed pad package design.

Battery Chargers Part Context

This part belongs to the BQ25040 family of battery chargers manufactured by Texas Instruments. The family focuses on single-cell lithium-ion management with integrated power path control. The DQCT designation specifies the tape-and-reel packaging format for automated assembly processes. It represents a cost-effective solution for portable electronic devices requiring reliable power management.

Battery Chargers Replacement Considerations

Check for direct substitutes within the BQ25040 series such as BQ25040DQCR for different packaging options. Verify pin-to-pin compatibility if replacing with other TI single-cell chargers. Ensure alternative components support the same 4.2V output voltage and 1.1A charge current specifications.