ISL95859AHRTZ-T

Overview

The ISL95859AHRTZ-T is a multi-phase 1+2+1 core controller designed for Intel IMVP8 compliant CPU power delivery. It integrates a digital control engine with extended Iccmax register ranges to support advanced power management features. The device operates within an input voltage range of 4.5V to 25V and provides adjustable output voltages from 0.25V to 1.52V. Packaged in a 40-lead, 5x5mm QFN (TQFN) format with a height of 0.75mm, it supports surface mount technology. This component is engineered for high-efficiency synchronous buck regulation in demanding computing applications.

Feature Summary

• Supports Intel IMVP8 specifications for energy-efficient CPU power delivery
• Integrates extended Iccmax register ranges for enhanced current monitoring capabilities
• Provides flexible 1+2+1 multi-phase topology configuration for core and peripheral loads

Applications

• Intel IMVP8 compliant processor power supply designs
• High-performance server and workstation motherboard VRMs
• Multi-phase synchronous buck regulator systems for CPU cores

Procurement Notes

Verify the specific suffix 'AHRTZ' against official Renesas documentation to confirm package type and tape-and-reel specifications. Confirm RoHS compliance status directly with the manufacturer or authorized distributors. Check for obsolescence notices as this component family may have successor models. Ensure ESD handling protocols are followed during assembly due to the sensitive digital control interface.

Selection Notes

Select this controller when designing for Intel IMVP8 standards requiring precise current limit adjustments via extended registers. It is suitable for applications needing a compact 40-pin QFN footprint with integrated multi-phase control. Consider thermal performance requirements given the 5x5mm package dimensions. Verify compatibility with external MOSFETs and passive components for the target 4.5V-25V input range.

Part Context

This part belongs to the Renesas Intersil ISL9585x series of digital multi-phase controllers. These devices are widely used in high-density power solutions for modern processors. The series emphasizes programmability and efficiency through digital control loops. Related parts in the ecosystem include variants with different phase configurations or updated feature sets for newer CPU generations.

Replacement Considerations

Check for direct pin-compatible upgrades such as the ISL95857AHRTZ-T if phase count differences are acceptable. Consult Renesas datasheets for functional equivalents with updated manufacturing processes. Ensure any substitute maintains IMVP8 compliance and similar input/output voltage ranges.