NCP1850FCCT1G

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The NCP1850FCCT1G is a highly integrated battery charger that is specifically optimized for high current and low current applications found in small battery products. This integrated battery charger can be used with a variety of battery chemistry including Li-Ion and NiMH battery chemistries. It is an ideal solution for a wide range of portable and battery powered systems such as medical, automotive, and industrial, as well as consumer electronics.

The NCP1850FCCT1G is a PMIC (power management integrated circuit)-level integrated battery charger. It is designed to power multiple cells and maximize charge rate and capacity, while adhering to the JEITA (Japan Electronics & Information Technology Industries Association) safety standards. Its integrated functions include active-current sense control, low ripple at high current load, programmable fast charge (DC-DC) paths, and thermal foldback protection. Additionally, the NCP1850FCCT1G provides adjustable current-sense resistor for system optimization.

The NCP1850FCCT1G is typically used in portable applications such as laptop battery backup and charging, cell phones, medical equipment, and home appliances. In these applications, the integrated battery charger simplifies the circuit design by removing costly external components. The integrated functions improve the overall efficiency, reduce the size and heat of the system, and help to meet thermal requirements. Because the chip integrates active-current sense control, battery chargers using the NCP1850FCCT1G can maximize battery life while monitoring the battery status in order to detect over charge conditions.

The NCP1850FCCT1G battery charger works by regulating the current that flows into the battery. It uses a programmable fast charge (DC-DC) path that follows the charging profile of the battery as well as an adjustable current-sense resistor for system optimization. The charging current into Li-Ion and NiMH batteries is typically regulated by the use of an external sense resistor, which helps to protect the battery from over charge conditions. The NCP1850FCCT1G then regulates the charging current by automatically adjusting the voltage levels of the charge streams accordingly.

The integrated low-battery detection circuit in the NCP1850FCCT1G prevents battery overcharge. It includes a real-time protection controller that constantly monitors the battery’s current and voltage levels and shuts off the charging when the battery reaches full charge. Additionally, the chip supports over-temperature protection features, including thermal foldback and thermal foldback current rollback, to protect the battery cell from damage due to high temperature conditions. This helps to increase the battery life and overall performance.

The NCP1850FCCT1G is an invaluable integrated battery charger for any battery powered application. From medical systems to consumer electronics, the integrated functions of the NCP1850FCCT1G make system design simpler and more reliable. Its ability to provide active-current sense control, low ripple at high current load, programmable fast charge (DC-DC) paths, and adjustable current-sense resistor for system optimization make it an ideal choice for a wide range of portable and battery powered systems.

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