ISL95816AHRZ

Special Purpose Regulators Overview

The ISL95816AHRZ is a single-output voltage regulator controller from Renesas, designed for Intel VR12.5 and VR12.6 compliant microprocessor core power supplies. It utilizes Robust Ripple Regulator (R3) technology to provide fast transient response and improved light-load efficiency through variable switching frequency. The device operates with an input voltage range of 4.5V to 28V and delivers an adjustable output voltage between 0.5V and 2.3V. It supports 1-phase configurations and functions within a junction temperature range of -10°C to 100°C. The component is housed in a 32-QFN (4x4mm) package.

Special Purpose Regulators Feature Summary

• Implements Robust Ripple Regulator (R3) technology for enhanced transient response and adaptive frequency modulation during load changes.
• Provides complete control and protection logic for Voltage Regulators compliant with Intel VR12.5 and VR12.6 specifications.
• Supports flexible current sensing options including DCR sensing with NTC compensation or precise resistor-based sensing.
• Features programmable parameters for V_BOOT, maximum current limits, voltage transition slew rates, and switching frequencies.

Special Purpose Regulators Applications

• Intel VR12.5 compliant microprocessor core power supplies
• Intel VR12.6 compliant microprocessor core power supplies
• Single-phase Voltage Regulator (VR) designs

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'A' against official Renesas documentation to confirm the exact temperature grade and revision level, as suffixes define environmental ratings. Confirm that the 32-QFN package dimensions match the target PCB footprint. Check for any Product Change Notifications (PCN) regarding label updates or manufacturing site transfers. Ensure the design accounts for the Moisture Sensitivity Level (MSL 3) requirements during assembly processing.

Special Purpose Regulators Selection Notes

Select this controller when designing for Intel VR12.5 or VR12.6 architectures requiring a single-phase solution. The R3 technology is advantageous for applications demanding rapid transient recovery and high efficiency at light loads. Consider the -10°C to 100°C operating range for standard commercial environments. Evaluate the need for remote voltage sense and programmable slew rates if system stability requires precise control over voltage transitions.

Special Purpose Regulators Part Context

This component belongs to the ISL95816 series of PWM controllers. Variants such as the ISL95816IRZ differ primarily in operating temperature ranges (-40°C to 100°C). The series is part of Renesas's portfolio for CPU core power management, utilizing the proprietary R3 modulator architecture to replace traditional PWM controllers in modern processor power delivery networks.

Special Purpose Regulators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The ISL95816IRZ serves as a temperature-range variant but may require verification for direct pin-to-pin compatibility and thermal performance equivalence.