Maxim Integrated MAX14648EWA+ USB Battery Charger

The MAX14648EWA+ from Maxim Integrated is a high-performance, single-cell Li+ battery charger with Smart Power Selector™ designed to provide efficient charging and power management for portable devices. This compact and versatile charger is housed in a 16-bump, 1.63mm x 1.63mm WLP package, making it an ideal solution for space-constrained applications.

The MAX14648EWA+ incorporates a range of features to ensure safe and reliable charging. It supports a wide input voltage range from 3.7V to 6V, allowing it to accommodate various USB sources, including standard USB, USB On-The-Go (OTG), and other higher-power sources. The charger is also equipped with an adjustable charge current up to 1.5A, which can be set through an external resistor, giving users flexibility in optimizing charge times and thermal performance.

One of the key features of the MAX14648EWA+ is the Smart Power Selector™, which allows the device to seamlessly transition between charging the battery and powering the system load. This ensures that the system remains operational even when the battery is depleted, by automatically switching to draw power from the USB input.

Additional safety features include thermal regulation to prevent overheating, a battery temperature monitor to ensure the battery is within safe charging temperatures, and a programmable safety timer to prevent overcharging. The MAX14648EWA+ also offers overvoltage protection, preventing damage to the battery and the system in the event of excessive input voltage.

The MAX14648EWA+ provides status indications through an open-drain CHG output, which can be used to drive an LED or communicate with a host microcontroller. This output indicates whether the battery is charging or fully charged, assisting in power management and user interface design.

With its advanced feature set and compact footprint, the MAX14648EWA+ from Maxim Integrated is an excellent choice for designers looking to implement a robust and efficient USB charging solution in portable devices such as smartphones, tablets, wireless headsets, and wearable technology.