MAX8731AETI+T

The MAX8731AETI+T is a versatile, SMBus programmable multi-chemistry battery charger IC designed by Maxim Integrated. It is capable of charging one to four Li+ series cells and delivers a maximum charge current of 8A. The device utilizes a minimal command set for easy programming of charge voltage, charge current, and adapter current limit.

Key electrical specifications include an input voltage range of 8V to 26V, a charge current accuracy of 3% at 3.5A, and a battery voltage accuracy of 0.5% directly at the battery terminal. It also features a 4% accurate analog output for monitoring adapter current and digital output for AC adapter detection. The MAX8731AETI+T operates within a temperature range of -40°C to +85°C.

This IC is housed in a compact 5mm x 5mm, 28-pin Thin QFN package, suitable for surface mounting. Its design incorporates features like dual remote-sense inputs for improved accuracy and cycle-by-cycle current-mode control for battery short-circuit protection. An evaluation kit is available to facilitate design time.

Applications for the MAX8731AETI+T include notebook computers, tablet PCs, medical devices, and other portable equipment requiring rechargeable batteries.