FAN54040UCX

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The FAN54040UCX is a monolithic synchronous buck battery charger IC suitable for a variety of portable device applications such as smart phones and PDA’s. This battery charging integrated circuit, created by the renowned semiconductor powerhouse FANUC, is available in two varieties: a 1A version, and a 2A version. Featuring low quiescent current and high efficiency, it also offers advanced features such as programmable termination and pre-charge current, as well as adjustable voltage and current. It also offers a wide variety of protection features, ensuring a safe and robust device.

FAN54040UCX offers an integrated solution for lithium-ion and Li-polymer battery charging in AC and USB applications. It is specifically designed to meet the needs of the increasing number of portable applications, ranging from USB-type phone charging systems to portable and automotive power management systems. This IC is highly configurable, allowing users to reduce development time, as well as providing flexibility when it comes to design modification.

The FAN54040UCX is a powerful battery charging IC that helps designers address the various design challenges and needs encountered in portable device design. The FAN54040UCX’s main characteristic feature is Dual Input, which facilitates combined AC (up to 24V) and USB power sources. This feature can be combined with adjustable input current limit, allowing the device to maintain the efficiency and safety of the power source.

The FAN54040UCX features an adjustable output voltage, adjustable current limit and programmable charging time. This makes it ideal for a wide variety of applications, as the user can tailor the device to meet the requirements of their application. It also offers a variety of protection features, including current and voltage limit protection, thermal protection and short circuit protection.

The working principle of the FAN54040UCX is based on the well-known Synchronous Buck technique. When input voltage is applied, the integrated synchronous circuit starts to work and a controlled level of output current and voltage is provided for battery charging. During charging, the voltage across the battery is constantly monitored and the charging process is automatically terminated if the safety and system value limits are exceeded. The output current is adjusted by an external sense resistor, while input current is adjustable by an internal current limit setting. The voltage on the battery is extremely stable, preventing battery over-charge and allowing a deep battery discharge.

The FAN54040UCX is ideal for cost-sensitive, high-efficiency, space-constrained applications like smart phones, tablet PCs, digital cameras, and other portable electronic devices. The device allows the user to adjust voltage, current and protection settings, making it possible to customize the charging parameters for any particular type of battery. With its low standby power, high efficiency and a highly integrated solution, the FAN54040UCX provides an excellent solution for portable device applications.

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