ISL6549IBZ-T

Overview

The ISL6549IBZ-T is a dual-output switching controller manufactured by Renesas Electronics Corporation, designed for high-performance power management applications. It operates within a supply voltage range of 4.75 V to 5.25 V and supports a switching frequency between 150 kHz and 1 MHz. The device features two independent outputs capable of delivering up to 20 A each, with an adjustable output voltage range from 800 mV to 13.2 V. It utilizes a 14-SOIC package and functions within an operating temperature range of 0°C to +70°C. The controller supports synchronous buck topologies with a maximum duty cycle of 100%.

Feature Summary

• Dual-channel architecture providing independent control for two separate power rails
• Supports synchronous rectification for improved efficiency in step-down configurations
• Integrated linear regulator (LDO) functionality alongside switching control capabilities
• Capable of 100% duty cycle operation for minimal dropout voltage requirements

Applications

• Server power distribution networks requiring multi-rail regulation
• Communication gateway systems needing stable low-voltage supplies
• Industrial equipment utilizing distributed power architectures
• High-density computing platforms with strict thermal constraints

Procurement Notes

Verify the specific suffix 'IBZ-T' against official Renesas documentation to confirm tape-and-reel packaging and industrial temperature grade specifications. Ensure compatibility with existing PCB footprints for the 14-SOIC package. Confirm that the 4.75 V to 5.25 V supply requirement aligns with system design parameters before integration.

Selection Notes

Select this component when designing systems requiring two isolated or semi-isolated regulated outputs from a single controller IC. It is suitable for applications demanding precise voltage regulation with high current capability. Consider the 14-SOIC package size for space-constrained designs. Verify that the required switching frequency falls within the 150 kHz to 1 MHz operational window for optimal performance.

Part Context

The ISL6549 belongs to the ISL6549 series of dual-output controllers from Renesas/Intersil. This family is engineered for complex power management tasks in datacom and telecom infrastructure. The IBZ-T variant specifically denotes industrial temperature rating and reel packaging, distinguishing it from commercial or tube-packaged alternatives within the same functional family.

Replacement Considerations

Check for direct cross-reference part numbers such as ISL6549CBZ-T for commercial grade equivalents. Verify pinout compatibility and electrical parameter overlaps before substituting. Consult Renesas documentation for any functional differences between industrial and commercial variants.