BQ2057WTS

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The BQ2057WTS is a high-current battery charger integrated circuit (IC) designed for use in cellular phones and other portable electronics. It has a wide input voltage range of 5V to 28V, and can be used to charge two or more different models of batteries. This IC can be used in applications such as single cell, two cell, and three cell Li-Ion/Li-Polymer battery packs.

The BQ2057WTS includes an integrated linear current-mode DC-DC converter and a battery-wide cell balancing circuit. Its wide input voltage range and internal linear current-mode DC-DC converter have the advantage of minimal external components, resulting in a low BOM cost. The integrated cell balancing circuit evenly distributes charge among parallel cells to maintain charge balance and prevent cell over-voltage. This cell balancing circuit dynamically adjusts the charge current, based on the cell voltage, and also protects the cells from charge over-current situations. All of these features make it an efficient and reliable charging solution for portable electronics.

Additionally, the BQ2057WTS employs a wide range of safety, over-temperature and fault protection features. It provides both cell and charger thermal shutdown, cell voltage, charge current, and maximum charge time protection. Cell over-voltage is prevented, and the IC is protected against input over-voltage and electrical shorts. The charger can also use external temperature information to adjust the charge current, providing an improved overall battery charging performance. These features make it an ideal choice for applications that require reliable battery charging.

In conclusion, the BQ2057WTS is an integrated battery charging IC that is specifically designed for use in portable electronics. It is an efficient and reliable solution due to its wide input voltage range, linear current-mode DC-DC converter, and integrated cell balancing circuit. It also provides various safety, over-temperature and fault protection features. This makes the BQ2057WTS an ideal choice for applications that require reliable battery charging.

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