MAX1587A

19-3089; Rev 4; 4/09 EVAALVUAAILTAIOBNLEKIT High-Efficiency, Low-IQ PMICs with Dynamic Core for PDAs and Smart Phones MAX1586A/MAX1586B/MAX1586C/MAX1587A/MAX1587C General Description The MAX1586/MAX1587 power-management ICs are optimized for devices using Intel XScale® microprocessors, including Smart Phones, PDAs, internet appliances, and other portable devices requiring substantial computing and multimedia capability at low power. The ICs integrate seven high-performance, low-operatingcurrent power supplies along with supervisory and management functions. Included are three step-down DC-DC outputs, three linear regulators, and a seventh always-on output. DC-DC converters power I/O, DRAM, and the CPU core. The I/O supply can be preset to 3.3V or adjusted to other values. The DRAM supply on the A and C devices is preset for 1.8V or 2.5V, while the MAX1586B DRAM supply is preset for 3.3V or 2.5V. The DRAM supply on all parts can also be adjusted with external resistors. The CPU co...