ISL6549CBZ-TR5194

Overview

The ISL6549CBZ-TR5194 is a dual-output switching controller manufactured by Renesas (formerly Intersil). It operates with a single 12V supply and features a synchronous buck topology for one output and a linear regulator for the second. The device supports a switching frequency range of 150 kHz to 1 MHz and delivers up to 20 A output current. It provides an adjustable output voltage from 800 mV to 13.2 V. The component is housed in a 14-lead SOIC-Narrow package and functions within an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates a synchronous step-down controller and a linear regulator in a single package
• Supports wide input voltage range via single 12V supply operation
• Features adjustable switching frequency from 150 kHz to 1 MHz
• Includes comprehensive protection mechanisms for reliable power management

Applications

• Point-of-load regulation for high-current digital circuits
• Telecommunications equipment power distribution
• Industrial control system power supplies
• Embedded systems requiring combined switching and LDO outputs

Procurement Notes

Verify the specific suffix TR5194 against official datasheets, as standard listings often use generic suffixes like CBZ or CB-T. Confirm RoHS compliance status and moisture sensitivity levels prior to ordering. Check for product discontinuance notifications from Renesas, as this series may be end-of-life. Ensure the supplier provides valid traceability documentation for critical applications.

Selection Notes

Select this component when a design requires both high-current switching regulation and a low-noise linear output from a single controller IC. The integrated topology reduces board space compared to discrete solutions. Verify that the required output voltage falls within the 800 mV to 13.2 V range. Consider the thermal performance of the 14-SOIC package for the intended load current.

Part Context

This part belongs to the ISL6549 family of dual-output power management ICs. The family is designed for applications needing efficient voltage conversion alongside stable reference voltages. Renesas acquired Intersil, so documentation may reference either brand name. The device represents a consolidated solution for multi-rail power architectures in compact form factors.

Replacement Considerations

Check for direct pin-compatible alternatives in the ISL6549 series, such as ISL6549CBZ or ISL6549CB-T. Verify if newer generations from Renesas offer improved efficiency or extended temperature ranges. Ensure any substitute maintains the same 14-SOIC footprint and electrical specifications.