RT9641APS2(2007) Datasheet - Richtek Technology

General Description
The RT9641A/B, paired with either the RT9230 or RT9231 simplifies the implementation of ACPI-compliant designs in microprocessor and computer applications. The IC integrates two linear controllers and a low-current pass transistor, as well as the monitoring and control functions into a 16-pin SOIC package.

FEATUREs
● Provides 3 ACPI-Controlled Voltages
    ►5V Active/Sleep(5VDUAL)
    ►3.3V Active/Sleep(3.3VDUAL)
    ►2.5V/3.3V Active/Sleep(VMEM) with RT9641A
    ►2V/3.43V Active and 2.5V/3.3V Sleep(VMEM) with RT9641B
● Simple Control Design
    ►No Compensation Required
● Excellent Output Voltage Accuracy
    ►3.3VDUALOutput : ± 2.0% ; Sleep States Only
    ►2.5V/3.3V (2.6V/3.43V) Output : ±2.0% ; Both Operational States
● Fixed Output Voltages Require No Precision External Resistors
● Small Size
    ►Small External Component Count
● Selectable 2.5V/3.3V (2.6/3.43) V(MEM) Output Voltage via FAULT/MSEL Pin
    ►2.5V/2.6V for RDRAM Memory
    ►3.3V/3.43V for SDRAM Memory
● Under-Voltage Monitoring of All Outputs with Centralized FAULT Reporting
● Adjustable Soft-start Function Eliminates 5VSB Perturbations
● RoHS Compliant and 100% Lead (Pb)-Free