FAN54005UCX

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FAN54005UCX is an integrated battery charger IC from Fairchild Semiconductor which is designed to charge Li-ion/ Polymer batteries in a wide range of portable electronic applications. It is among the FAN5400 family of integrated battery charger ICs which includes the FAN5402UCX, FAN5403UCX and FAN5404UCX. It is available in a small WLCSP (1.9x1.9mm) package and uses on-chip MOSFETs with low RDS(ON) to provide high output current of up to 1.5 A. It is designed to support multiple charge profiles and has various features such as thermal regulation, input current and voltage regulation and protection.

The application field of FAN54005UCX is mainly in the portable consumer electronics market, where it is used to charge Li-ion/Polymer battery packs. It is suitable for applications such as digital cameras, MP3 players, GPS units, PDAs, cellular handsets and other handheld devices. It can also be used in other applications such as USB charging, Bluetooth headsets, cordless phone chargers and solar chargers.

The FAN54005UCX works by controlling the transfer of charge from an external power source, such as a wall adapter, into a Li-ion/Polymer battery. The charge current is regulated based on input voltage, the temperature of the battery and the cell voltage. The output current is controlled by an internal current limit circuit. When the voltage on the battery reaches a certain level, the charger automatically switches to a trickle-charge mode to keep the battery at its peak charge level.

The FAN54005UCX also offers various protection features such as overvoltage protection, overcurrent protection and thermal shutdown. These protect the charger and the battery from damage due to overcharging or high temperatures. The charger also has a built-in timer that limits the charge duration, preventing overcharging and extending battery life.

The FAN54005UCX is an efficient and cost-effective solution for charging Li-ion/Polymer batteries in portable consumer electronics applications. It offers a wide range of features for easy integration and safe operation, making it an ideal choice for designers looking for a reliable battery charging solution.

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