BQ25122YFPR

Battery Chargers Overview

The BQ25122YFPR is a highly integrated battery charge management solution designed for single-cell Li-Ion and Li-Polymer batteries. It features a low quiescent current of 700 nA, making it suitable for power-constrained applications. The device supports an input voltage range from 3.4 V to 5.5 V with a maximum safety rating of 20 V. It provides a programmable charge current up to 0.3 A and regulates the battery charge voltage between 3.6 V and 4.65 V. The component utilizes an I2C control interface and operates within a temperature range of -40°C to 85°C.

Battery Chargers Feature Summary

• Integrates buck converter and LDO for flexible power path management
• Includes JEITA battery temperature monitoring via thermistor pin
• Provides overvoltage protection (OVP) and thermal regulation
• Supports UVLO and linear control topology

Battery Chargers Applications

• Hearables
• Wearable devices
• IoT sensors

Battery Chargers Procurement Notes

Verify the suffix YFPR against official Texas Instruments documentation to confirm package type and reel specifications. Ensure compatibility with system requirements for I2C communication and thermal management. Cross-reference the part number with authorized distributors to validate authenticity and avoid counterfeit components. Confirm that the operating environment stays within the specified -40°C to 85°C range for reliable performance.

Battery Chargers Selection Notes

Select this component when designing systems requiring ultra-low standby current for single-cell lithium batteries. It is appropriate for applications where space is limited due to its compact DSBGA-25 package. Consider the 0.3 A maximum charge current limit when sizing for larger battery capacities. The integrated power path and buck converter simplify external component count compared to discrete solutions.

Battery Chargers Part Context

This part belongs to the BQ2512x family of battery charge management ICs from Texas Instruments. It shares architectural similarities with the BQ25120 and BQ25121 series but offers specific parameter variations tailored for different power budgets. The family targets portable electronics needing efficient charging in minimal footprint designs.

Battery Chargers Replacement Considerations

Check for BQ25120AYFPT or BQ25121AYFPT as potential alternatives if current requirements or voltage settings differ. Verify pin-to-pin compatibility and software register mapping before substitution.