ISL95855CHRTZ-T

Special Purpose Regulators Overview

The ISL95855CHRTZ-T is a multi-phase switching controller compliant with Intel IMVP8 standards, designed for powering Intel microprocessors. It features three independent voltage regulator outputs: VR A (configurable as 3, 2, or 1 phase), VR B (configurable as 2 or 1 phase), and VR C (1 phase). The device operates within an input voltage range of 4.5V to 25V and supports output voltages from 0V to 1.52V. It utilizes Robust Ripple Regulator (R3) technology for fast transient response and variable switching frequency. The component is housed in a 48-lead TQFN package.

Special Purpose Regulators Feature Summary

• Supports Intel IMVP8 standard with SVID interface compatibility
• Configurable multi-phase architecture for core, graphics, and system agent rails
• Integrates R3 modulation for improved transient response and light-load efficiency
• Includes programmable current sensing via DCR or precision resistors

Special Purpose Regulators Applications

• Intel CPU power solutions for notebooks
• Desktop computer motherboard designs
• Ultrabook power management systems
• Tablet PC voltage regulation

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging versus 'Z' for tray. Confirm RoHS compliance status through official datasheets. Check for End-of-Life notifications as this series may be discontinued. Validate moisture sensitivity levels before assembly. Ensure compatibility with intended Intel processor generations.

Special Purpose Regulators Selection Notes

Select based on required phase configuration flexibility for VR A, B, and C outputs. Consider thermal performance requirements given the TQFN package. Verify support for DrMOS or discrete MOSFET drivers. Evaluate current sensing method preferences between DCR and resistor-based detection. Ensure system input voltage ranges match application needs.

Special Purpose Regulators Part Context

This component belongs to the ISL95855 family of IMVP8 controllers. It serves as a complete power solution for Intel processors. The device integrates control and protection for three distinct voltage rails. It replaces older two-chip approaches by consolidating functions into a single IC.

Special Purpose Regulators Replacement Considerations

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