HIP6502B
TM
Data Sheet
May 2000
File Number
4871
Multiple Linear Power Controller with ACPI Control Interface
The H...
HIP6502B
TM
Data Sheet
May 2000
File Number
4871
Multiple Linear Power Controller with ACPI Control Interface
The HIP6502B complements either an HIP6020 or an HIP6021 in ACPI-compliant designs for microprocessor and computer applications. The IC integrates four linear controllers/
regulators, switching, monitoring and control functions into a 20-pin SOIC package. One linear controller generates the 3.3VDUAL/3.3VSB voltage plane from the ATX supply’s 5VSB output, powering the south bridge and the PCI slots through an external pass
transistor during sleep states (S3, S4/S5). A second
transistor is used to switch in the ATX 3.3V output for operation during S0 and S1/S2 (active) operating states. Two linear controllers/
regulators supply at choice either or both of the computer system’s 2.5V or 3.3V memory power through external pass
transistors in active states. During sleep states, integrated pass
transistors supply the sleep power. Another controller powers up the 5VDUAL plane by switching in the ATX 5V output in active states, and the ATX 5VSB in sleep states. One internal
regulator outputs a dedicated, noise-free 2.5V clock chip supply. The HIP6502B’s operating mode (active outputs or sleep outputs) is selectable through two digital control pins, S3 and S5. Enabling sleep state support on the 5VDUAL output is offered through the EN5VDL pin. In active state, the 3.3VDUAL and 3.3VMEM linear
regulators use external N-channel pass MOSFETs to connect the outputs directly to th...