ISL6521CBZ

Overview

The ISL6521CBZ is a PWM Buck DC/DC and Triple Linear Power Controller manufactured by Intersil, now part of Renesas Electronics. It is housed in a 16-pin SOIC package. The device operates within an input voltage range of 4.5 V to 5.5 V, with a nominal rating of 5 V. It utilizes voltage-mode control and pulse width modulation techniques. The component is RoHS compliant and features a moisture sensitivity level of 3.

Feature Summary

• Integrates a synchronous rectified buck converter for core voltage regulation alongside three linear controllers for system voltages.
• Provides comprehensive power control and protection functions for microprocessor systems.
• Includes monitoring capabilities for the primary PWM controller.

Applications

• Regulating low voltage supplies requiring high current for FPGA cores
• Powering ASIC processor components
• Supplying I/O and memory circuit voltages

Procurement Notes

Verify the manufacturer source, as Intersil was acquired by Renesas Electronics. Confirm the specific temperature range details from the official datasheet, as general specifications may not list the full operational limits. Ensure the 16-pin SOIC package matches the design requirements and check for lead-free compliance status if required by project standards.

Selection Notes

Select this component when a single IC solution is needed to manage both high-current core power and multiple auxiliary system rails. It is suitable for designs requiring integrated protection and monitoring without separate discrete controllers. Consider the 16-pin SOIC footprint constraints during PCB layout planning.

Part Context

This part belongs to the Intersil family of power management ICs, which are now integrated into Renesas Electronics' product portfolio. The company specializes in high-performance analog integrated circuits for industrial, automotive, and communications applications. This controller represents the legacy Intersil technology transferred to Renesas.

FAQ

What type of converter does the ISL6521CBZ use for the main output?

It uses a synchronous rectified buck converter for regulating the primary low voltage supply.

How many linear controllers are included in this device?

The ISL6521CBZ integrates three linear controllers for additional system voltage regulation.