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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

Renesas ISL6266AHRZ-T

Name: ISL6266AHRZ-T
Brand: Renesas
SKU: ISL6266AHRZ-T
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ISL6266AHRZ-T

Manufacturer:: Renesas

Category:: Special Purpose Regulators

Package:: 48-VFQFN Exposed Pad

Datasheet:: ISL6266AHRZ-T.pdf

Description:: IC REG CONV INTEL 1OUT 48QFN

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Product details

Overview

ISL6266AHRZ-T from Renesas (formerly Intersil) is a two-phase buck core voltage regulator implementing Intel IMVP-6+ protocol with integrated 2A gate drivers, R3 Technology™ modulator, 7-bit VID DAC (0.300V–1.500V), and differential remote CPU die sensing. It delivers up to 50A output with dynamic phase shedding, diode emulation in deep sleep, and CPU power monitoring via analog PMON output - deployed in Intel mobile platform VRMs for Pentium/Core processors.

For engineers reviewing the ISL6266AHRZ-T datasheet, ISL6266AHRZ-T pinout, ISL6266AHRZ-T application, or ISL6266AHRZ-T equivalent, key selection criteria include IMVP-6+ compliance, R3 modulator transient response, dual-phase CCM/DCM mode switching, DCR/resistive current sensing support, and thermal monitoring via NTC input and VR_TT#.

Technical Context

The ISL6266AHRZ-T uses R3 Technology™ - a hybrid modulator synthesizing noise-free inductor ripple current analogs for hysteretic PWM control while retaining an error amplifier for 0.5% system accuracy. Unlike fixed-frequency PWM, its switching frequency dynamically increases during load transients (280–320 kHz nominal, 100–600 kHz adjustable) to achieve faster regulation.

It implements Intel's IMVP-6+ smart voltage positioning: active-mode two-phase CCM, PSI#-triggered single-phase CCM, and DPRSLPVR-enabled deeper-sleep diode emulation. Current sensing supports lossless DCR (with NTC thermal compensation) or precision resistive methods, with static/dynamic current sharing across phases and droop-based overcurrent protection referenced to OCSET.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage Range	0.300V to 1.500V via 7-bit VID input (12.5mV steps); enables precise microprocessor core voltage scaling per IMVP-6+ spec.
System Accuracy	±0.5% over temperature (−40°C to +100°C) for VID = 0.75V–1.5V; ensures stable CPU operation under thermal stress.
Switching Frequency	280–320 kHz nominal (2-channel), adjustable 100–600 kHz via VW resistor; balances efficiency, EMI, and component size.
Gate Drive Capability	UGATE/LGATE: 2A sink/source (UGATE), 4A sink (LGATE); drives high-side/lower-side MOSFETs directly without external drivers.
Current Sensing	Supports both inductor DCR (with NTC thermal compensation) and discrete resistor sensing; enables accurate load-line tracking and OCP.
Power Monitor Output	PMON analog output proportional to VSEN × (DROOP − VO); interfaces directly with ADC for real-time CPU power reporting.
Thermal Protection	NTC input with 60µA bias; VR_TT# open-drain output asserts on overtemperature (1.2V NTC threshold); supports system-level thermal shutdown.

Pinout & Package

ISL6266AHRZ-T is housed in a 48-lead 7×7 mm QFN package (Pb-free, RoHS-compliant) with exposed thermal pad. Pin functions are validated per FN6398 Rev 4.00 datasheet, Page 7–8.

Pin/Terminal	Circuit Role	Design Meaning
VID0–VID6	Digital voltage identification inputs	7-bit LSB-to-MSB interface setting core output voltage (0.300V–1.500V) per IMVP-6+ VID table.
PSI#, DPRSTP#, DPRSLPVR	Intel IMVP-6+ power-state control inputs	Enable dynamic phase shedding (PSI#), deeper-sleep entry/exit timing (DPRSTP#, DPRSLPVR), and mode transitions.
VSEN / RTN	Differential remote CPU die sense inputs	Enable closed-loop regulation at processor die using unity-gain differential amplifier - critical for IMVP-6+ compliance.
ISEN1 / ISEN2	Per-phase current sense inputs	Accept DCR voltage drop or resistor voltage for channel current measurement; feed VSUM summation node.
UGATE1/2, LGATE1/2	Integrated gate driver outputs	Direct drive signals for high-side and low-side MOSFETs; 2A UGATE source/sink, 4A LGATE sink capability.
PMON	Analog CPU power monitor output	Linear output proportional to instantaneous CPU power; connects to system ADC without signal conditioning.
VR_TT#, PGOOD	Open-drain status outputs	VR_TT# indicates thermal overload (10Ω pull-down); PGOOD confirms regulated output within ±10% for 13 cycles.

Key Features

Feature	Design Value
R3 Technology™ modulator	Combines hysteretic speed with error amplifier accuracy; achieves fastest transient response among IMVP-6+ controllers (frequency scales with dI/dt).
Dynamic phase management	Automatically transitions between two-phase CCM (heavy load), one-phase CCM (medium load), and diode-emulation DCM (deep sleep) to maximize efficiency.
Dual current sensing architecture	Supports both lossless DCR sensing (with NTC thermal compensation) and precision resistive sensing - eliminates need for dedicated current-sense ICs.
IMVP-6+ compliant load line	Programmable droop via DROOP/DFB pins; maintains specified V-I slope across full load range for Intel processor compatibility.
Integrated CPU power monitor	PMON output provides real-time analog power data (VSEN × droop voltage); enables OS-level power optimization and thermal management.

Applications

Mobile CPU Core VRM	Intel Pentium/Core Notebook Power Delivery
Use Scenario: Regulating core voltage for Intel mobile CPUs (e.g., Core 2 Duo, Pentium M) in ultraportable notebooks with strict thermal and efficiency requirements. IC Role / Device Role / Timing Role: Primary two-phase buck controller implementing IMVP-6+ protocol with R3 modulator, dynamic phase shedding, and remote die sensing. Use Value: Enables >90% efficiency at 35A load (VIN=12.6V), reduces output ripple by doubling switching frequency via interleaving, and extends battery life via deeper-sleep modes.	Use Scenario: Power delivery solution for Intel Montevina platform laptops requiring IMVP-6+ compliance, fast transient response, and thermal-aware operation. IC Role / Device Role / Timing Role: Core voltage regulator with integrated gate drivers, CPU power monitor (PMON), and NTC-based thermal protection for system-level thermal management. Use Value: Eliminates external gate drivers and current-sense amplifiers; reduces BOM count by 7+ components versus discrete controller solutions.
High-Efficiency Notebook VRM	IMVP-6+ Reference Design Platform
Use Scenario: High-density VRM design where board space and thermal performance are constrained - e.g., 12–19V input, 0.75–1.15V output, up to 50A. IC Role / Device Role / Timing Role: Two-phase controller supporting coupled inductors, DCR current sensing, and soft-start slew-rate control via SOFT capacitor. Use Value: Achieves 2.5mV/µs soft-start slew rate (15nF SOFT cap), minimizes inrush current, and supports all-ceramic output capacitors for compact layout.	Use Scenario: Reference design validation for Intel IMVP-6+ compliance testing, including load-line accuracy, PSI#-driven phase transitions, and PGOOD timing. IC Role / Device Role / Timing Role: Certified IMVP-6+ controller with documented VID table, VR_ON/CLK_EN#/PGOOD timing, and IMVP-6_PWRGD signaling. Use Value: Reduces qualification time by providing pre-validated timing margins (e.g., 7.6ms PGOOD delay), guaranteed ±0.5% system accuracy, and full datasheet test conditions.

Mobile CPU Core VRM

Intel Pentium/Core Notebook Power Delivery

Use Scenario: Regulating core voltage for Intel mobile CPUs (e.g., Core 2 Duo, Pentium M) in ultraportable notebooks with strict thermal and efficiency requirements.

IC Role / Device Role / Timing Role: Primary two-phase buck controller implementing IMVP-6+ protocol with R3 modulator, dynamic phase shedding, and remote die sensing.

Use Value: Enables >90% efficiency at 35A load (VIN=12.6V), reduces output ripple by doubling switching frequency via interleaving, and extends battery life via deeper-sleep modes.

Use Scenario: Power delivery solution for Intel Montevina platform laptops requiring IMVP-6+ compliance, fast transient response, and thermal-aware operation.

IC Role / Device Role / Timing Role: Core voltage regulator with integrated gate drivers, CPU power monitor (PMON), and NTC-based thermal protection for system-level thermal management.

Use Value: Eliminates external gate drivers and current-sense amplifiers; reduces BOM count by 7+ components versus discrete controller solutions.

High-Efficiency Notebook VRM

IMVP-6+ Reference Design Platform

Use Scenario: High-density VRM design where board space and thermal performance are constrained - e.g., 12–19V input, 0.75–1.15V output, up to 50A.

IC Role / Device Role / Timing Role: Two-phase controller supporting coupled inductors, DCR current sensing, and soft-start slew-rate control via SOFT capacitor.

Use Value: Achieves 2.5mV/µs soft-start slew rate (15nF SOFT cap), minimizes inrush current, and supports all-ceramic output capacitors for compact layout.

Use Scenario: Reference design validation for Intel IMVP-6+ compliance testing, including load-line accuracy, PSI#-driven phase transitions, and PGOOD timing.

IC Role / Device Role / Timing Role: Certified IMVP-6+ controller with documented VID table, VR_ON/CLK_EN#/PGOOD timing, and IMVP-6_PWRGD signaling.

Use Value: Reduces qualification time by providing pre-validated timing margins (e.g., 7.6ms PGOOD delay), guaranteed ±0.5% system accuracy, and full datasheet test conditions.

Equivalent & Alternatives

The following parts are listed as comparable options for similar two-phase IMVP-6+ core regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ISL6266AIRZ-T	Same silicon, extended temp range (−40°C to +100°C vs. −10°C to +100°C for HRZ variants); identical electrical specs and pinout.	Required for industrial or extended-temperature notebook designs; HRZ variants discontinued per ordering table.	Select ISL6266AIRZ-T for new designs - ISL6266AHRZ-T is no longer available or supported.
RT8802CGQW	Single-chip two-phase IMVP-6+ controller with integrated MOSFET drivers; supports 0.3–1.5V VID, but lacks R3 modulator and PMON output.	Suitable for cost-sensitive platforms where CPU power telemetry is not required; lower gate drive strength (1.5A UGATE).	Choose RT8802CGQW only if PMON, NTC thermal monitoring, and R3 transient performance are not needed.

Compared with ISL6266AHRZ-T, ISL6266AIRZ-T offers identical functionality with broader operating temperature support, while RT8802CGQW provides a lower-cost alternative lacking R3 Technology™, PMON, and NTC-based thermal compensation - making ISL6266AHRZ-T optimal for thermally demanding, high-efficiency mobile VRMs requiring real-time power telemetry.

Availability

ISL6266AHRZ-T is available at Aetrix Electronics and suitable for mobile CPU core VRMs, Intel Montevina platform power delivery, and high-efficiency notebook VRM designs requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for ISL6266AHRZ-T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Renesas Electronics Corporation (acquired Intersil in 2017) is a global semiconductor leader specializing in microcontrollers, analog, power management, and timing solutions for automotive, industrial, and computing markets.

The ISL6266AHRZ-T belongs to Renesas' legacy IMVP-6+ core controller product line, designed specifically for Intel mobile processor voltage regulation - emphasizing fast transient response, multi-phase efficiency, and seamless integration with Intel power-state protocols.

FAQ

What is the operating temperature range for ISL6266AHRZ-T?

The ISL6266AHRZ-T is rated for ambient temperatures from −10°C to +100°C, with junction temperature limits of −40°C to +125°C. This range supports mainstream notebook thermal environments but excludes extended-temperature industrial use - for which the ISL6266AIRZ-T (−40°C to +100°C) is recommended. All electrical specifications in the FN6398 datasheet are validated across this range.

Does ISL6266AHRZ-T support both DCR and resistive current sensing?

Yes, ISL6266AHRZ-T supports both lossless inductor DCR current sensing (with NTC thermal compensation via the NTC pin) and discrete resistive current sensing. The ISEN1 and ISEN2 pins accept either method, feeding summed current data to the VSUM node for droop generation and overcurrent protection - enabling flexible, high-accuracy load-line implementation per IMVP-6+.

How does the R3 Technology™ modulator in ISL6266AHRZ-T improve transient response?

The R3 Technology™ modulator in ISL6266AHRZ-T synthesizes noise-free analogs of inductor ripple current and applies hysteretic comparison relative to the error amplifier output. During load transients, this causes automatic switching frequency increase (up to 600 kHz), reducing regulation delay versus fixed-frequency PWM - delivering faster voltage recovery while maintaining 0.5% steady-state accuracy across the 0.300V–1.500V VID range.

What is the function of the PMON pin on ISL6266AHRZ-T?

The PMON pin on ISL6266AHRZ-T provides an analog output proportional to the product of VSEN and the droop voltage (DROOP − VO), enabling direct measurement of instantaneous CPU core power. It sources/sinks up to 2mA, operates linearly from 0.308V to 2.8V, and interfaces with system ADCs without external amplification - supporting OS-level power management and thermal throttling decisions.

Is ISL6266AHRZ-T pin-compatible with ISL6266AIRZ-T?

Yes, ISL6266AHRZ-T and ISL6266AIRZ-T share identical 48-lead 7×7 mm QFN packaging, pinout, and electrical functionality. The only difference is the specified ambient temperature range (−10°C to +100°C vs. −40°C to +100°C) and part marking (HRZ vs. AIRZ). Since ISL6266AHRZ-T is marked "no longer available or supported" in the datasheet, ISL6266AIRZ-T is the recommended drop-in replacement for new designs.

ISL6266AHRZ-T Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: Robust Ripple Regulator™ (R3)

Package/Case:: 48-VFQFN Exposed Pad

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Applications:: Converter, Intel IMVP-6

Voltage - Input:: 5V ~ 25V

Number of Outputs:: 1

Voltage - Output:: 0.3V ~ 1.5V

Operating Temperature:: -10°C ~ 100°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-QFN (7x7)

ISL6266AHRZ-T FAQ

1.How can I place an order for ISL6266AHRZ-T through Aetrix?

Please submit a Request for Quotation (RFQ) for ISL6266AHRZ-T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for ISL6266AHRZ-T reliable?

The price and inventory of ISL6266AHRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6266AHRZ-T is usually 5 days.

3.What payment methods are accepted for ISL6266AHRZ-T?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6266AHRZ-T transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ISL6266AHRZ-T?

ISL6266AHRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ISL6266AHRZ-T order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for ISL6266AHRZ-T?

For technical support, including ISL6266AHRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6266AHRZ-T requirements.

6.How does Aetrix verify that ISL6266AHRZ-T is sourced from the original manufacturer or authorized distributors?

All ISL6266AHRZ-T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that ISL6266AHRZ-T meets industry standards.

7.What is the process for return or replacement of ISL6266AHRZ-T?

All ISL6266AHRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6266AHRZ-T, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The ISL6266AHRZ-T part is unused and in its original packaging.

Return procedure for ISL6266AHRZ-T:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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