ISL6506BCB-T

Power Supply Controllers, Monitors Overview

The ISL6506BCB-T is a switching controller designed for ACPI-compliant power regulation in microprocessor and computer applications. It integrates control of the 5VDUAL and 3.3VDUAL rails within an 8-lead EPAD SOIC package. The device operates between 0°C and +70°C. It features selectable operating modes via S3 and S5 digital pins, utilizing an internal linear regulator for 3.3VDUAL generation during sleep states or an external N-Channel MOSFET for active states. The ISL6506B variant provides a 2A current limit on its internal 3.3V LDO.

Power Supply Controllers, Monitors Feature Summary

• Integrates control for 5VDUAL and 3.3VDUAL rails into a compact 8-lead package
• Supports ACPI-compliant designs with selectable active or sleep output modes
• Generates 3.3VDUAL internally during sleep states using an integrated linear regulator
• Connects outputs directly to ATX supply inputs in active states for minimal losses

Power Supply Controllers, Monitors Applications

• ACPI-compliant power regulation for motherboards
• Microprocessor power management systems
• Computer application power supplies

Power Supply Controllers, Monitors Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging configuration. Confirm RoHS compliance status through official Renesas documentation as distributor data may vary. Ensure the 8-SOIC-EP narrow package dimensions match the target PCB footprint requirements. Validate that the 2A LDO current limit meets system design specifications compared to the ISL6506A variant.

Power Supply Controllers, Monitors Selection Notes

Select this component for designs requiring integrated dual-rail control in ACPI environments. Choose the ISL6506B over the ISL6506A if a higher 2A current limit for the internal 3.3V LDO is required. Consider the 8-lead SOIC-EP package for space-constrained motherboard layouts. Verify compatibility with standard ATX power supply voltages for both active and sleep state operations.

Power Supply Controllers, Monitors Part Context

The ISL6506B belongs to the ISL6506B series of power management ICs from Renesas Electronics Corporation. It complements other voltage regulators in ACPI-compliant designs by handling critical dual-voltage planes. The device is functionally identical to the ISL6506A except for the internal LDO current rating and specific sleep mode behavior regarding the 5VDUAL output shutdown characteristics.

Power Supply Controllers, Monitors Replacement Considerations

The ISL6506ACB is listed as a discontinued alternative within the same family. Verify functional equivalence regarding the 2A LDO limit and ACPI pinout compatibility before substitution.