ISL6549CBZ

Overview

The ISL6549CBZ is a dual regulator power controller featuring a synchronous rectified buck PWM output and a linear LDO output, designed for single 12V supply applications. It operates within a switching frequency range of 150 kHz to 1 MHz and supports an output current of up to 20 A. The device provides adjustable output voltages between 800 mV and 13.2 V with a maximum duty cycle of 100%. Packaged in a 14-lead Narrow SOIC, it functions reliably across an operating temperature range of 0°C to +70°C.

Feature Summary

• Integrates a synchronous buck PWM controller and a linear regulator in a single package
• Operates from a single 12V input supply voltage
• Supports high-current delivery up to 20A for processor core power

Applications

• Intel VRM (Voltage Regulator Module) designs
• Processor core voltage regulation
• Single-supply dual-output power systems

Procurement Notes

Verify component authenticity through authorized channels as the ISL6549CBZ is listed as an End-of-Life product by Renesas/Intersil. Confirm RoHS compliance status via official datasheets before integration. Ensure supply chain sources provide valid traceability documentation due to discontinued manufacturing status.

Selection Notes

Select this component for designs requiring a combined synchronous buck and linear regulator solution driven by a single 12V rail. Verify that the required output voltage range falls within the 800mV to 13.2V specification. Ensure the thermal design accommodates the SOIC-14 package constraints for the intended load current.

Part Context

Part of the ISL6549 series, this controller was developed by Intersil (now Renesas) for high-performance computing applications. It consolidates power management functions to reduce board space compared to discrete solutions, targeting legacy Intel platform architectures requiring specific voltage sequencing and regulation profiles.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. As the component is discontinued, engineers must evaluate newer generations of VRM controllers or cross-reference with equivalent functional devices from other manufacturers based on pin compatibility and electrical specifications.