Texas Instruments BQ24113ARHLRG4 Battery Charger IC

The BQ24113ARHLRG4 from Texas Instruments is a highly integrated standalone synchronous switch-mode battery charge controller designed for efficient charging of single-cell Li-ion and Li-polymer batteries. Its compact QFN package and comprehensive feature set make it an ideal choice for portable applications.

This advanced IC offers a wide range of input voltages from 4.5 V to 28 V, which allows for flexibility in sourcing power from various adapters. The BQ24113ARHLRG4 supports a programmable charging current up to 3 A, ensuring fast and efficient charging tailored to the needs of the specific battery being used. Additionally, the charge voltage is programmable up to 4.2 V per cell, which is the typical voltage requirement for Li-ion and Li-polymer cells.

Safety features are paramount in battery charging, and the BQ24113ARHLRG4 includes several protections to ensure reliable operation. It has an integrated input over-voltage protection that shields the battery from excessive input voltage, which could otherwise lead to damage. The thermal regulation feature reduces charge current if the IC temperature exceeds a preset threshold, thereby protecting the charger and battery from overheating.

The device also includes a battery temperature monitoring feature that works in conjunction with an external thermistor, ensuring that the battery is charged only within its safe temperature range. Additionally, the BQ24113ARHLRG4 offers charge status indicators that can be used to drive LEDs, providing visual feedback on the charging process.

With its power-packed features, the BQ24113ARHLRG4 is a perfect choice for a variety of portable devices such as smartphones, tablets, digital cameras, and other USB-powered gadgets. Its efficient operation, coupled with built-in safety mechanisms, makes it a reliable and robust solution for modern battery charging applications.