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RT9644

Richtek Technology Corporation
Part Number RT9644
Manufacturer Richtek Technology Corporation
Description ACPI Regulator/Controller
Published Jan 2, 2009
Detailed Description Preliminary RT9644/A ACPI Regulator/Controller for Dual Channel DDR Memory Systems General Description The RT9644/A is...
Datasheet PDF File RT9644 PDF File

RT9644
RT9644

Overview
Preliminary RT9644/A ACPI Regulator/Controller for Dual Channel DDR Memory Systems General Description The RT9644/A is a complete ACPI compliant power solution for DDR and DDR2 memory system with up to 4 DIMMs dual channel systems.
This RT9644 includes one synchronous buck controller for DDR/DDR2 VDDQ, one DDR/DDR2 bus terminator VTT (equal to VDDQ/2) regulator with source and sinking ability, three LDO controllers for www.
DataSheet4U.
com V GMCH (cascode), and GMCH/CPU terminat ion VTT_GMCH/CPU.
The RT9644A includes one synchronous buck controller for DDR/DDR2 VDDQ, one PWM controller for VGMCH (with external MOSFET driver), one DDR/DDR2 bus terminator VTT (equal to VDDQ/2) regulator with source and sinking ability, and two LDO controllers for VTT_GMCH/CPU and VDAC.
These parts also provide a reference buffer for DDR/DDR2 input reference voltage generator.
When during S0 state, the VIDPGD indicates the GMCH_CPU VTT within spec and operational.
The synchronous buck DC-DC PWM is implem...


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