BQ25890HRTWT

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

The BQ25890HRTWT is a system load sharing, highly integrated two-cell Li-Ion/Li-Polymer battery charger integrated circuit (IC). It is an average current mode synchronous step down charge controller for dual cell applications. The controller is optimized for high performance, safety, and load sharing applications.

The BQ25890HRTWT fits the needs of a broad range of compact, multi-cell applications. It supports charging from USB port VBus, AC wall adapters, and battery inputs. Also, it is best suited for charging of two-cell Li-Ion/Li-Polymer battery packs. The device is available in a space-saving 4mm x 4mm MSOP package.

Application Field:

The BQ25890HRTWT has been designed for portable applications such as mobile phones, cellular phones, tablet PCs, digital cameras, handheld gaming systems, and MP3 players. It is also suitable for other applications where the size and space is at a premium. The device is able to operate within an input voltage range as low as 4V to as high as 28V, making it suitable for many types of input sources including USB, AC wall adapters, and battery inputs. The device is capable of charging two batteries simultaneously while providing full system load sharing.

Working Principle:

The BQ25890HRTWT works by using the average current mode synchronous step down charging control method. The device senses the load current for each battery and adjusts the charging current for each cell accordingly. The load current for one cell can be up to 3A and for both cells, it\'s a maximum of 4A. It has built-in safety features such as a safety timer, over-temperature shutdown, and short circuit protection. In addition, the device has an optimized level-shifting voltage regulator for continuous battery charging.

In summary, the BQ25890HRTWT is an average current mode synchronous step-down charger designed for two-cell Li-Ion/Li-Polymer battery applications. It is suitable for portable applications such as mobile phones, cellular phones, tablet PCs, digital cameras, handheld gaming systems, and MP3 players. The device is able to operate within a wide input voltage range and provides full system load sharing. It has safety features such as safety timer, over-temperature shutdown and short circuit protection, as well as an optimized level-shifting voltage regulator for continuous battery charging.

The specific data is subject to PDF, and the above content is for reference