DATASHEET
ISL6524
VRM8.5 PWM and Triple Linear Power System Controller
FN9015 Rev 3.00 Apr 18, 2005
The ISL6524 provi...
DATASHEET
ISL6524
VRM8.5 PWM and Triple Linear Power System Controller
FN9015 Rev 3.00 Apr 18, 2005
The ISL6524 provides the power control and protection for four output
voltages in high-performance microprocessor and computer applications. The IC integrates one PWM controller and three linear controllers, as well as the monitoring and protection functions into a 28-pin SOIC package. The PWM controller regulates the microprocessor core
voltage with a synchronous-rectified buck converter. One linear controller supplies the computer system’s AGTL+ 1.2V bus power. The other two linear controllers regulate power for the 1.5V AGP bus and the 1.8V power for the chip set core
voltage and/or cache memory circuits.
The ISL6524 includes an Intel VRM8.5 compatible, TTL 5-input digital-to-analog converter (DAC) that adjusts the microprocessor core-targeted PWM output
voltage from 1.050V to 1.825V in 25mV steps. The precision reference and
voltage-mode control provide ±1% static regulation. T...