ISL95857HRTZ-T

Special Purpose Regulators Overview

The ISL95857HRTZ-T is a multi-phase switching controller designed for Intel IMVP8 architecture, featuring a 1+2+1 output configuration. It operates with an input voltage range of 4.5V to 25V and provides adjustable output voltages from 250mV to 1.52V. The device supports output currents up to 75A across its three channels. Packaged in a 40-lead TQFN (5x5mm) with a height of 0.75mm, it utilizes Robust Ripple Regulator technology for fast transient response and variable switching frequency.

Special Purpose Regulators Feature Summary

• Implements Robust Ripple Regulator technology for improved light-load efficiency and faster transient settling times
• Configurable multi-phase architecture supporting one phase for VR A, two or one phases for VR B, and one phase for VR C
• Integrates lossless inductor DCR current sensing and precision resistor current sensing methods
• Supports Intel DrMOS power stages and discrete power stages via dedicated PWM outputs

Special Purpose Regulators Applications

• Intel microprocessor core, graphics, and system agent rail power solutions
• Notebook and ultrabook platforms compliant with IMVP8 specifications
• Desktop and tablet computer power management systems

Special Purpose Regulators Procurement Notes

Verify the specific suffix 'T' indicates tape-and-reel packaging if required by assembly equipment. Confirm RoHS3 compliance status as per the latest datasheet revision. Check for End-of-Life notices or Product Change Notifications regarding manufacturing site transfers or label updates before finalizing procurement plans.

Special Purpose Regulators Selection Notes

Select this component when designing for Intel IMVP8 processors requiring a single-chip solution for core, graphics, and system agent rails. Ensure the design accommodates the 40-lead TQFN footprint and thermal requirements. Verify compatibility with selected power stages, such as Intersil ISL95808 drivers, for proper interface signaling.

Special Purpose Regulators Part Context

This part belongs to the ISL95857 series of IMVP8-compatible controllers. It shares architectural similarities with variants like the ISL95857AHRTZ and ISL95857CIRTZ but differs in package type or temperature grade. The series leverages Renesas's R3 technology to replace traditional two-chip approaches, reducing board area and cost while maintaining high accuracy.

Special Purpose Regulators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Evaluate cross-reference options within the ISL95857 family based on specific suffix requirements and verify pin-to-pin compatibility with existing PCB layouts.