The LTC 1479 is the "heart" of a total power management solution for single and dual battery notebook computers and other portable equipment. The LTC1479 directs power from up to two battery packs and a DC power source to the input of the main system switching regulator. It works in concert with related LTC power management products (e.g. LTC1435, LT 1511, etc.) to create a total system solution; starting from the batteries and the DC power source, and ending at the input of each of the computer's complex loads. A system-provided power management P monitors and actively directs the LTC1479.