ISL6506BI: Multiple Linear Power Controller with ACPI Control Interface

The ISL6506BIBZ complements other power building blocks (voltage regulators) in ACPI-compliant designs for microprocessor and computer applications. The IC integrates the control of the 5VDUAL and 3.3VDUAL rails into an 8 Ld EPAD SOIC package. The ISL6506BIBZ operating mode (active outputs or sleep outputs) is selectable through two digital control pins; S3 and S5.

A completely integrated linear regulator generates the 3.3VDUAL voltage plane from the ATX supplys 5VSB output during sleep states (S3, S4/S5). In active states (during S0 and S1/S2), the ISL6506BIBZ uses an external N-Channel pass MOSFET to connect the outputs directly to the 3.3V input supplied by an ATX power supply, for minimal losses.

The ISL6506BIBZ powers up the 5VDUAL plane by switching in the ATX 5V output through an NMOS transistor in active states, or by switching in the ATX 5VSB through a PMOS (or PNP) transistor in S3 sleep state. In S4/S5 sleep states, the ISL6506BIBZ 5VDUAL output is shut down.

The ISL6506BIBZ features a 2A current limit on the internal 3.3V LDO.

Key Features
  • Provides 2 ACPI-Controlled Voltages
    • 5VDUAL USB/Keyboard/Mouse
    • 3.3VDUAL/3.3VSB PCI/Auxiliary/LAN
  • Excellent 3.3VDUAL Regulation in S3/S4/S5
    • ±2.0% Over-Temperature
    • 2A Capability
  • Small Size; Very Low External Component Count
  • Over-Temperature Shutdown
  • Pb-Free Available (RoHS Compliant)
Applications
  • ACPI-Compliant Power Regulation for Motherboards
    • 5VDUAL is shut down in S4/S5 sleep states
Typical Diagram
Datasheets
TitleTypeUpdatedSizeOther Languages
ISL6506BI DatasheetPDF17 Nov 2014209 KB
White Papers
TitleTypeUpdatedSizeOther Languages
Five Easy Steps to Create a Multi-Load Power SolutionPDF30 Jan 2017502 KB
Order Information
Part NumberPackage TypeWeight(g)PinsMSL RatingPeak Temp (°C)RoHS Status
ISL6506BIBZ-T8 Ld SOIC T+R0.07583260RoHS
ISL6506BIBZ8 Ld SOIC0.07583260RoHS
Datasheet
ISL6506BI Datasheet 17 Nov 2014
Other
ISL6506BI
8 Ld SOIC ISL6506BI
Five Easy Steps to Create a Multi-Load Power Solution 30 Jan 2017