Maxim Integrated MAX8845YETC+T Battery Charger IC

The Maxim Integrated MAX8845YETC+T is a high-performance, single-cell, Li+ battery charger IC designed to provide safe and efficient charging for portable devices. This compact, thermally-efficient charger is ideal for small gadgets such as smartphones, Bluetooth headsets, portable media players, and other USB-powered devices.

With its advanced features, the MAX8845YETC+T ensures the optimal charging of lithium-ion (Li-ion) or lithium-polymer (Li-Poly) batteries. It operates over a wide input voltage range from 4.1V to 6.3V, making it versatile for use with various power sources, including standard USB ports and AC adapters.

One of the key benefits of the MAX8845YETC+T is its integrated Smart Power Selector™, which allows the device to seamlessly transition between charging the battery and powering the system load. This feature ensures that even when the input power is limited, the system remains operational while the battery gets charged efficiently.

The device also features an automatic charging current adjustment based on the input power and battery voltage. This adaptive adjustment helps to maximize the charging rate while protecting the battery and the power source. Additionally, the MAX8845YETC+T includes a programmable charge timer for added safety, terminating the charge cycle after a predetermined period to prevent overcharging.

For temperature monitoring and safety, the MAX8845YETC+T incorporates a thermistor input that monitors the battery temperature during charging. This ensures that the charging process is suspended if the battery temperature goes outside the safe range, protecting both the battery and the device.

The charger IC also features a charge status output that can be used to drive an LED indicator, providing visual feedback on the charging process. Moreover, the MAX8845YETC+T comes with built-in overvoltage protection to safeguard the IC and the battery from excessive input voltages.

Encased in a compact, 12-pin TDFN package, the MAX8845YETC+T is designed for space-constrained applications, offering a high level of integration to minimize the external component count and simplify the design process. It is an excellent choice for designers looking for a reliable, feature-rich charging solution for their next-generation portable devices.