For enhanced performance, the integrated LDOs provide low 45microVRMS output noise and a low dropout of only 100mV at 100mA (LDOs 1,4 and 5), as well as a very low, 21microamp ground current for longer battery life. These LDOs have programmable output voltages for ease of use in numerous applications. 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.
MAX8893: MicroPMIC for multimedia application processors provides high integration in a 2.5mm x 3.0mm WLP
Maxim introduced the MAX8893, a highly integrated microPMIC for 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). This integration saves space and cost without sacrificing design flexibility. All regulators and switches have individual enable pins that allow designers to turn on/off different functional blocks to save power and extend battery life. Its high level of integration and functional block enable control make the MAX8893 a complete power-management solution for multimedia application processors in portable devices such as cellular handsets.