General Description
The RT9645 is a combo regulator which is compliant to ACPI specification for desktop/server power management and system application. The part features one switching regulator for DDR memory VDDQ power; a second PWM controller for GMCH core power, a LDO controller for FSB_ VTT termination, a LDO controller for 5VSB to 3VSB conversion; and a dual power control 5VDL for S0 and S3 system power.

FEATUREs
Integrated 5 Channels Power Regulator
DC/DC Buck PWM Regulator (Driver Included)
DC/DC Buck PWM Controller
Linear Regulator Controller for FSB_VTT Power
3.3VSB Linear Regulator Controller with 40mA Output Capability
5VDL Switch Control
Conform to ACPI Specification, Supporting Power Management at S0, S3, and S5 State
300kHz Fixed Frequency Oscillator
Low-Side RDS(ON) Current Sensing for Precision Over-Current Detection
Thermal Shutdown
Small 24-Lead VQFN Package
RoHS Compliant and 100% Lead (Pb)-Free

APPLICATIONs
Desktop System Power
Server System Power