BQ25120AYFPR

The BQ25120AYFPR from Texas Instruments is a compact and highly integrated battery charger IC suitable for space-constrained applications like wearables and IoT devices. It supports Li-Ion/Li-Polymer and Lithium Phosphate battery chemistries, with a configurable charge current up to 300mA and a battery charge voltage range of 3.6V to 4.65V.

Key features include Power Path management for simultaneous system operation and battery charging, an integrated LDO, and a configurable 300mA buck regulator with a default 1.8V output. The device operates from a 3.4V to 5.5V input voltage and includes essential fault protection such as over-voltage, over-temperature, and short circuit protection. Communication is handled via an I2C interface, allowing control over various parameters including charge voltage, current, and termination thresholds.

The BQ25120AYFPR is available in a small 25-DSBGA package, requiring minimal external components for a complete solution. Its low quiescent current, especially in ship mode (<50 nA), contributes to extended battery life during storage. The operating temperature range is -40°C to 85°C.

This IC is designed to increase system operation time between charges and offers features like push-button wake-up and reset with adjustable timers. It is an ideal solution for applications demanding efficient power management and a small footprint.