BQ24161BYFFT

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The BQ24161BYFFT is a PMIC (power management IC) - Battery Chargers integrated circuit that is typically used for applications that require battery charging. It is a complete linear charger solution from Texas Instruments that can be used to charge Lithium-based, NiMH and NiCd battery types. It also includes support for fast charging and charging in low temperature environments.

The BQ24161BYFFT chip is a single-chip solution that combines a synchronous boost converter, high precision analog blocks and a battery charger into a low-cost,space-saving design. Its integrated design allows it to deliver up to 3A peak current, while its high efficiency, small size and low quiescent current make it ideal for portable applications. On power-up, the battery charger automatically calibrates itself to the correct battery chemistry, while its low-power startup current helps extend battery life.

The BQ24161BYFFT supports fast charging, with up to 3 Amps of output current for faster charging of batteries. The integrated FE2.1 (USB Battery Charging Specification) support allows for automatic detection and quick charging of different types of device batteries. It also includes safety features to protect the batteries from overvoltage, overtemperature, and short circuit. The mobile device battery can also be disconnected from the charger while the voltage is still being regulated, as the chip has an internal clock which ensures proper housekeeping.

The BQ24161BYFFT also has built-in overvoltage protection, reverse-current blocking, thermal regulation, and watchdog circuit protection to ensure overall safety and reliability of the device. The integrated quasi-resonant ACFET auto-recovery for the output regulation provides fast dynamic response and eliminates the need for external components. The chip also includes a dedicated low power wake-up pin, allowing the device to reduce its power consumption when entering idle mode. Last but not least, the BQ24161BYFFT has a digital interface with I2C and PWM support, enabling easy setup and control.

In summary, the BQ24161BYFFT is a complete battery charger IC solution for single-cell Li-ion and Li-polymer battery applications. It offers an integrated design and is small, low-cost and highly efficient, making it the ideal choice for portable applications. The FE2.1 support and wide input voltage range makes it suitable for a variety of mobile device battery types, while its safety features make it more reliable and robust in operation. The digital interface allows for easy setup and control, while the low-power startup current helps preserve battery life.

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