ISL95857CHRTZ-T

Special Purpose Regulators Overview

The ISL95857CHRTZ-T is a multi-phase core controller compliant with Intel IMVP8 specifications, designed for notebook and desktop applications. It provides three Voltage Regulator outputs: VR A (1-phase), VR B (configurable 2- or 1-phase), and VR C (1-phase). The device operates with an input voltage range of 4.5V to 25V and supports output voltages from 0.25V to 1.52V. It utilizes Robust Ripple Regulator technology for fast transient response and variable switching frequency. The component is housed in a 40-VFQFN package with dimensions of 5x5mm.

Special Purpose Regulators Feature Summary

• Complies with Intel IMVP8 standards for CPU power management
• Integrates three independent Voltage Regulator channels with shared serial control bus
• Features Robust Ripple Regulator technology for improved light-load efficiency
• Supports multiple current sensing methods including lossless inductor DCR

Special Purpose Regulators Applications

• Intel IMVP8 compatible notebooks
• Desktop computer systems
• Ultrabook platforms
• Tablet devices

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'T' indicates tape and reel packaging configuration against official Renesas documentation. Confirm that the CHRTZ variant aligns with the required temperature grade and operational parameters for the target design. Ensure compatibility with Intel DrMOS power stages or discrete MOSFET drivers as specified in the datasheet. Cross-reference the part number with the latest product change notices to verify manufacturing status and availability constraints.

Special Purpose Regulators Selection Notes

Select this component when designing power solutions for Intel microprocessors requiring IMVP8 compliance. The configurable phase architecture allows optimization for varying load requirements across core, graphics, and system agent rails. Consider the shared serial bus capability for reduced board area compared to two-chip approaches. Evaluate the need for expanded Iccmax register ranges if supporting specific CFL/CNL CPU variants.

Special Purpose Regulators Part Context

The ISL95857 series belongs to Renesas's portfolio of specialized power management ICs targeting high-performance computing applications. Based on Intersil's Robust Ripple Regulator technology, these controllers offer advantages over traditional modulators, including faster transient settling times. The family supports various packaging options and addresses to maximize flexibility in supporting different IMVP8 CPU configurations.

Special Purpose Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.