Maxim Integrated MAX8934BETI+ Dual-Input, Li+ Charger and Smart Power Selector

The MAX8934BETI+ is an advanced power management integrated circuit (PMIC) from Maxim Integrated, designed to cater to the growing demand for efficient and reliable battery charging solutions. This high-performance IC is engineered to manage power for portable devices that use a single-cell lithium-ion (Li+) battery. It combines a dual-input charger with a Smart Power Selector™, offering a versatile and robust solution for a wide range of applications, including smartphones, tablets, cameras, and other portable electronics.

One of the standout features of the MAX8934BETI+ is its ability to accept two power sources simultaneously, typically a USB port and an AC adapter. This dual-input capability allows the device to charge the battery from either source, providing flexibility and convenience for users. The Smart Power Selector ensures that the system always operates efficiently by automatically selecting the best power source available, prioritizing external power to run the system and charge the battery, thereby preventing unnecessary battery drain.

The charger integrated into the MAX8934BETI+ is highly sophisticated, featuring autonomous charging cycles with prequalification, constant-current and constant-voltage modes, and a top-off timer to maximize battery life. Safety is a critical aspect of any charging solution, and this device includes multiple safety features such as overvoltage protection, thermal regulation, and a battery temperature monitor to ensure safe and reliable operation.

With a compact thermally enhanced TQFN package, the MAX8934BETI+ is designed for space-constrained applications. Its small footprint and low component count make it an ideal choice for sleek, modern portable electronics where space is at a premium. The device also supports JEITA battery temperature monitoring, which allows for temperature-based charge rate control, further enhancing the safety and longevity of the battery.

In summary, the Maxim Integrated MAX8934BETI+ is a powerful, dual-input Li+ battery charger with a Smart Power Selector that offers an optimal balance of performance, safety, and design flexibility for portable device manufacturers. Its advanced features ensure that devices remain powered and charged efficiently, making it a top choice for powering the next generation of portable electronics.