ISL6529CBZ

Overview

The ISL6529CBZ is a dual-output power management integrated circuit manufactured by Renesas Electronics Corporation. It integrates one synchronous buck switching regulator and one linear low-dropout (LDO) regulator within a single 14-SOIC package. The switching output supports an adjustable voltage range of 0.8V to 3.3V with a maximum current capacity of 15A, operating at a fixed frequency of 600kHz. The LDO output provides voltages from 0.8V to 3.3V with up to 4A capability. The device operates on a 3.3V or 5V supply and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Integrates a high-current synchronous buck converter and a dedicated linear regulator in a compact surface-mount package.
• Provides independent dual outputs suitable for powering core logic and auxiliary system rails simultaneously.
• Features a fixed 600kHz switching frequency to optimize external component size and transient response.

Applications

• Powering CPU cores and memory subsystems in embedded computing platforms
• Voltage regulation for mobile communication baseband processors
• Power distribution units in industrial control systems requiring mixed topology supplies

Procurement Notes

Verify the specific suffix and manufacturer designation carefully, as the component is listed as obsolete or end-of-life by major distributors. Confirm availability through authorized liquidation channels or secondary markets. Ensure that the received unit matches the original RoHS compliance status and moisture sensitivity level requirements for your assembly process before integration.

Selection Notes

Select this component when a design requires both high-efficiency switching regulation and clean linear noise suppression within a limited board area. It is appropriate for applications needing a primary high-current rail alongside a secondary lower-current stable supply. Consider thermal dissipation capabilities given the 15A switching load in the SOIC-14 form factor during initial evaluation.

Part Context

This part belongs to the ISL6529 series of power management ICs designed for microprocessor and DSP applications. It consolidates multiple voltage regulation functions into a single solution, reducing bill of materials count compared to discrete controller and regulator combinations. The series targets systems requiring precise voltage sequencing and tight regulation tolerances.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Due to the obsolete status, direct pin-to-pin replacements may require verification against updated datasheets from alternative manufacturers offering similar dual-output PMIC solutions.

FAQ

What is the switching frequency of the buck converter section?

The internal switching regulator operates at a fixed frequency of 600kHz.

Can the device handle a 15A load on the switching output?

Yes, the synchronous buck converter output is rated for a maximum current of 15A.