APPLICATION NOTE 4181

Simplify the Design of 1-Cell Li+ Battery-Operated Devices

By: Mehdy Khotan

Abstract: The MAX8671X power-management IC (PMIC) charges lithium batteries and regulates power for portable-system designs. To charge a lithium-ion (Li+) lithium polymer (Li-Poly) battery, this device uses input power from either a USB port or an external AC-to-DC power adapter. The PMIC also integrates many power-management features including overvoltage protection power switches for the USB and DC inputs, and five independent on-chip regulators for system power.