ISL6528CB-T

Overview

The ISL6528CB-T is a dual-output power management integrated circuit manufactured by Renesas Electronics Corporation. It integrates one synchronous buck controller and one low-dropout linear regulator (LDO) within an 8-SOIC package. The device operates with a supply voltage range of 4.5V to 5.5V and supports a switching frequency of 600kHz for the buck converter. Designed for surface mount installation, it functions within an operating temperature range of 0°C to 70°C. This component is classified as obsolete and no longer recommended for new designs.

Feature Summary

• Integrates a synchronous step-down controller and a linear regulator in a single package
• Supports standard 8-SOIC surface-mount packaging for compact board layouts
• Operates at a fixed 600kHz switching frequency for the DC-DC section

Applications

• Desktop computer motherboard power distribution
• Server and workstation system core voltage regulation
• General-purpose embedded systems requiring combined logic and analog power rails

Procurement Notes

Verify component obsolescence status before procurement planning. The ISL6528CB-T is officially discontinued by Renesas Electronics Corporation. Sourcing may be limited to surplus or secondary market channels. Confirm RoHS compliance requirements, as the specific part indicates non-compliance with current environmental directives. Ensure supply chain stability and long-term availability risks are assessed prior to integration into production schedules.

Selection Notes

Select this component only for maintenance of existing legacy designs where pin compatibility and electrical characteristics match the original specification. Evaluate alternative modern power management solutions that offer improved efficiency, extended temperature ranges, and active supply status. Consider redesigning the power stage if future production continuity is required, as the current part is not suitable for new development projects.

Part Context

The ISL6528CB-T belongs to the ISL6528 family of power management ICs from Renesas Electronics Corporation. This family was designed primarily for Intel processor voltage regulation modules. The CB suffix denotes the 8-SOIC package variant. The -T suffix typically indicates tape and reel packaging for automated assembly, though availability is restricted due to the product's end-of-life status.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult Renesas Electronics Corporation for current cross-reference recommendations or equivalent modern power management controllers suitable for replacing obsolete VRM components.