ISL6506BI
Multiple Linear Power Controller with ACPI Control Interface
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)
Description
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.
Applications
- ACPI-Compliant Power Regulation for Motherboards
- 5VDUAL is shut down in S4/S5 sleep states
