RT9641A/B
Triple Linear
Regulator Controller Support ACPI Control Interface
General Description
The RT9641A/B, paired with either the RT9230 or RT9231 simplifies the implementation of ACPIcompliant 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.
One linear controller generates the 3.
3VDUAL voltage plane from an ATX power supply's 5VSB output during sleep states (S3,S4/S5), powering the PCI slots through an external pass
transistor, as instructed by the status of the 3.
3VDUAL enable pin.
An additional pass
transistor is used to switch i...