Maxim Integrated Products has a power management chip for use with multimedia application processors.

This device includes one high-efficiency step-down converter, three low-noise LDOs, two low-supply-current LDOs, one low-on-resistance load switch, and one Hi-Speed USB switch-all in a 2.5mm x 3.0mm, 30-bump wafer-level package (WLP).

All regulators and switches have individual enable pins that allow designers to turn on/off different functional blocks to save power.

The MAX8893 LDOs provide 45µVRMS output noise and a low dropout of 100mV at 100mA (LDOs 1,4 and 5), as well as a 21µA ground current for longer battery life.

The 4MHz buck converter allows ultra-small external components and features dynamic voltage-scaling (DVS) control of the ramp rate (from 1mV/microsecond to 12mV/microsecond). The load switch features ultra-low on-resistance (50milliohm, min) and operates from an input voltage of 0.8V to 2.4V.

For more information, see http://www.maxim-ic.com