ISL6271A Datasheet | Renesas

VID3 PGND PHASE PVCC PGOOD Integrated XScale Regulator The ISL6271A is a versatile power management IC (PMIC) designed for the Xscale type of processors. The device integrates three regulators, two fault indicators and an I2C bus for munication with a host microprocessor. Two of the three regulators function as low power, low drop out regulators, designed to power SRAM and phase-lock loop circuitry internal to the Xscale processor. The third regulator uses a proprietary switch-mode topology to power the processor core and facilitate Dynamic Voltage Management (DVM), as defined by Intel. Since power dissipation inside a microprocessor is proportional to the square of the core voltage, Intel XScale processors implement DVM as a means to more efficiently utilize battery capacity. To support this power saving architecture, the ISL6271A integrates an I2C bus for munication with the host processor. The processor, acting as the bus master, transmits a “voltage level”...