DATASHEET
ISL6537
ACPI Regulator/Controller for Dual Channel DDR Memory Systems
FN9142 Rev 6.00 Jul 18, 2007
VDDQ DDR...
DATASHEET
ISL6537
ACPI
Regulator/Controller for Dual Channel DDR Memory Systems
FN9142 Rev 6.00 Jul 18, 2007
VDDQ DDR_VTTSNS
DRIVE2 FB2
VIDPGD VREF_OUT
VREF_IN
The ISL6537 provides a complete ACPI compliant power solution for up to 4 DIMM dual channel DDR/DDR2 Memory systems. Included are both a synchronous buck controller to supply VDDQ during S0/S1 and S3 states. During S0/S1 state, a fully integrated sink-source
regulator generates an accurate (VDDQ/2) high current VTT voltage without the need for a negative supply. A buffered version of the VDDQ/2 reference is provided as VREF. Two LDO controllers are also integrated for the GMCH core voltage regulation and for the GMCH and CPU VTT termination voltage regulation.
The switching PWM controller drives two N-Channel MOSFETs in a synchronous-rectified buck converter topology. The synchronous buck converter uses voltagemode control with fast transient response. The switching
regulator provides a maximum static regulation tolerance of...