ON Semiconductor FAN5405BUCX: High-Efficiency USB-Compatible Single Cell Li-Ion Switching Charger

The FAN5405BUCX from ON Semiconductor is a cutting-edge charging solution designed for single-cell lithium-ion batteries. This highly integrated circuit is specifically tailored for portable applications and is capable of operating with USB inputs, making it an ideal choice for today's mobile devices.

With its compact UMLP-10 package, the FAN5405BUCX offers a space-saving design that is well-suited for slim and portable electronics. It features a programmable charging current up to 1.45A, which allows for fast charging times, ensuring that devices are ready to use as quickly as possible. Additionally, the charger provides a programmable termination current to optimize battery health and longevity.

The device supports a wide input voltage range, accommodating various USB sources, including standard downstream ports, charging downstream ports, and dedicated charging ports. Its USB-compatibility is further enhanced with the inclusion of automatic input source detection as per USB battery charging specification 1.2, ensuring seamless integration with USB-powered systems.

Safety is a paramount concern in battery management, and the FAN5405BUCX addresses this with multiple protection features. It includes thermal regulation to prevent overheating, under-voltage lockout to ensure stable operation, and over-voltage protection to safeguard the battery and circuits from excessive input voltage. Additionally, the charger has built-in safety timers for pre-charge and fast charge phases, providing an extra layer of security.

For system designers looking for a flexible and efficient charging solution, the FAN5405BUCX also offers a programmable charge voltage with 4.2V nominal voltage, which can be fine-tuned for specific battery chemistry requirements. The charger's high efficiency and low quiescent current minimize power loss and extend battery life, making it an energy-conscious choice for modern electronic devices.

Overall, the ON Semiconductor FAN5405BUCX stands out as a versatile and reliable charging IC that meets the demands of contemporary portable electronics, offering a blend of performance, integration, and safety features.