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Renesas ISL6266AIRZ-T
- Part No.:
- ISL6266AIRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6266AIRZ-T.pdf
- Description:
- IC REG CONV INTEL 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,838
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Product details
Overview
ISL6266AIRZ-T from Renesas (formerly Intersil) is a two-phase buck core controller implementing Intel IMVP-6+ protocol with integrated 2A gate drivers, supporting 0.300V–1.500V output via 7-bit VID, ±0.8% system accuracy over temperature, and R3 Technology™ for fast transient response in laptop CPU power delivery.
For engineers reviewing the ISL6266AIRZ-T datasheet, ISL6266AIRZ-T pinout, ISL6266AIRZ-T application, or ISL6266AIRZ-T equivalent, this page delivers verified technical context, validated pin functions, confirmed IMVP-6+ compliance, real-world load-line behavior, and direct alternatives for mobile voltage regulator design and replacement.
Technical Context
The ISL6266AIRZ-T uses R3 Technology™-a proprietary Robust Ripple Regulator modulator that synthesizes inductor ripple current analogs and applies hysteretic comparison against error amplifier output, enabling variable switching frequency during transients while maintaining 0.5% regulation accuracy across 0.75V–1.5V VID range.
It supports dynamic phase add/drop via PSI# input, implements diode emulation in deeper sleep mode (DPRSLPVR/DPRSTP#), provides differential remote sensing (VDIFF/VSEN/RTN), and enables lossless DCR or discrete resistor current sensing with NTC thermal compensation on ISEN1/ISEN2 inputs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage Range | 0.300V to 1.500V in 12.5mV steps; digitally set by 7-bit VID interface for Intel IMVP-6+ compliant CPU core regulation. |
| System Accuracy | ±0.8% over –40°C to +100°C ambient; ensures stable core voltage under thermal stress without external calibration. |
| Switching Frequency | 280–320kHz nominal (2-phase); adjustable 100–600kHz via VW pin resistor; optimized for low EMI and high efficiency in thin-profile notebooks. |
| Gate Drive Capability | 2A source/sink per UGATE/LGATE; supports fast MOSFET switching with <8ns rise/fall times and <44ns propagation delay. |
| Current Sensing | Supports both lossless inductor DCR sensing and precision resistive sensing; VSUM summation node enables accurate multi-phase current sharing. |
| Protection Features | Programmable overcurrent (OCSET), overvoltage (155–235mV trip), undervoltage (–360 to –240mV), thermal shutdown (VR_TT#), and PGOOD with 7.6ms delay. |
| Power Monitor | PMON analog output proportional to VSEN × droop voltage; enables real-time CPU power estimation via external ADC. |
Pinout & Package
ISL6266AIRZ-T is housed in a 48-lead 7mm × 7mm QFN package with exposed thermal pad (PKG DWG L48.7x7), rated for –40°C to +100°C operation and RoHS-compliant matte tin (e3) termination.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID6 | Digital voltage identification input | 7-bit LSB-to-MSB interface setting core output voltage per IMVP-6+ table; supports on-the-fly VID changes. |
| PSI# | Phase reduction control input | Asserted low initiates single-phase CCM operation to improve light-load efficiency in medium-load CPU states. |
| DPRSLPVR / DPRSTP# | Deeper sleep mode enable signals | Coordinate entry/exit from ultra-low-power C4 state; trigger diode emulation and soft-slew transitions via SOFT pin. |
| VSEN / RTN | Differential remote sense inputs | Enable precise die-level voltage regulation by measuring CPU core voltage directly at the die, rejecting PCB IR drop. |
| ISEN1 / ISEN2 | Per-phase current sense inputs | Accept DCR or resistor-based current signals; feed into VSUM for droop generation and static/dynamic current balancing. |
| UGATE1/LGATE1/PHASE1/BOOT1 UGATE2/LGATE2/PHASE2/BOOT2 |
Phase 1 & 2 gate drive terminals | Direct drive capability for external high-side/low-side MOSFETs; internal bootstrap diodes simplify high-side driver design. |
| PMON | Analog power monitor output | Provides voltage proportional to instantaneous CPU power (VSEN × droop), enabling firmware-based power budgeting. |
| VR_TT# | Open-drain thermal fault indicator | Pulls low when junction temperature exceeds threshold; 10Ω pull-down enables immediate system-level thermal response. |
Key Features
| Feature | Design Value |
|---|---|
| R3 Technology™ modulator | Variable-frequency hysteretic control with error amplifier feedback achieves fastest transient response among IMVP-6+ controllers while maintaining tight DC regulation. |
| Dynamic phase management | Automatic transition between 2-phase CCM → 1-phase CCM → diode-emulation DCM based on PSI#, DPRSLPVR, and DPRSTP# logic states. |
| Differential remote sensing | VSEN/RTN inputs with unity-gain amplifier reject PCB trace resistance, ensuring ±0.8% core voltage accuracy at the CPU die under all load conditions. |
| Flexible current sensing | Hardware-selectable DCR or resistive sensing with single NTC thermistor network compensating copper winding drift across temperature. |
| Programmable soft-start | SOFT pin capacitor sets output slew rate (e.g., 2.5mV/µs); prevents inrush current and enables controlled power-up sequencing. |
| Integrated power monitoring | PMON output enables real-time CPU power telemetry without external multiplier ICs-critical for adaptive thermal and performance management. |
Applications
| Intel Mobile CPU Power Delivery | Laptop VRM Reference Design |
|---|---|
Use Scenario: Core voltage regulation for Intel Pentium/Core i-series processors in ultrabooks and business laptops requiring IMVP-6+ compliance. IC Role / Device Role / Timing Role: Two-phase synchronous buck controller with embedded gate drivers, VID decoding, and dynamic phase scaling. Use Value: Enables >90% efficiency at 35A load (12.6V input), reduces component count vs discrete controller+driver solutions, and supports rapid VID transitions during turbo boost. |
Use Scenario: Primary voltage regulator module (VRM) in OEM reference designs targeting Intel Montevina platform certification. IC Role / Device Role / Timing Role: IMVP-6+ compliant core controller managing coupled-inductor topology, DCR sensing, and CPU sleep-state coordination. Use Value: Delivers verified load-line accuracy (<±5mV deviation), meets Intel's 35A transient response spec (1000A/µs), and integrates CLK_EN# timing sync for system clock enable. |
| Thermal-Aware CPU Power Management | Multi-Mode Notebook Power Architecture |
Use Scenario: Real-time CPU power telemetry and thermal throttling in fanless or thermally constrained designs. IC Role / Device Role / Timing Role: Analog PMON output feeding microcontroller ADC; VR_TT# open-drain signal triggering OS-level thermal mitigation. Use Value: Eliminates need for external current shunt + op-amp + ADC chain; provides sub-10µs thermal fault response and millivolt-level power resolution. |
Use Scenario: Adaptive power architecture supporting active (2-phase CCM), balanced (1-phase CCM), and ultra-low-power (diode-emulation DCM) modes. IC Role / Device Role / Timing Role: Central IMVP-6+ controller interpreting PSI#, DPRSTP#, and DPRSLPVR to orchestrate mode transitions and soft-slew boundaries. Use Value: Extends battery life by >18% in idle/deep-sleep states while maintaining <200µs wake-up latency and seamless mode handoff. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar two-phase IMVP-6+ core controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6266HRZ-T | Legacy ISL6266 variant; lacks R3 Technology™, fixed 410–470kHz frequency, no DPRSLPVR support, and ±0.5% accuracy only at 0°C–100°C (not –40°C). | Valid for older Montevina designs without deeper sleep requirements; not suitable for new IMVP-6+ implementations needing C4/C6 state support. | Select ISL6266HRZ-T only for legacy repair or backward-compatible VRM upgrades where R3 performance and extended temp range are unnecessary. |
| RTQ2136B-QA | Active-part Ricoh controller; supports IMVP-8/9, 3–6 phases, 0.25–1.52V output, ±0.5% accuracy, but requires external gate drivers and has no integrated PMON. | Targets newer Intel platforms (Whiskey Lake+, Tiger Lake); incompatible with IMVP-6+ signaling and pinout; demands redesign of gate drive and sensing circuitry. | Choose RTQ2136B-QA for next-generation designs requiring higher phase count, lower minimum voltage, or automotive AEC-Q100 qualification-not for ISL6266AIRZ-T drop-in replacement. |
Compared with ISL6266HRZ-T, the ISL6266AIRZ-T delivers faster transient response via R3 modulation and full –40°C support; versus RTQ2136B-QA, it offers integrated gate drivers and PMON but lacks IMVP-8/9 compatibility-making it optimal for cost-sensitive, thermally demanding IMVP-6+ notebook VRMs.
Availability
ISL6266AIRZ-T is available at Aetrix Electronics and suitable for Intel Montevina platform laptop VRMs, IMVP-6+-compliant CPU power delivery systems, and thermally constrained embedded computing applications requiring stable component supply and long-term lifecycle support.
Supply support for ISL6266AIRZ-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 and maintains full support for its high-performance analog and power management portfolio, including IMVP-compliant core controllers.
The ISL6266AIRZ-T belongs to Renesas' legacy Intersil IMVP-6+ controller family, engineered specifically for efficient, compact, and thermally robust CPU voltage regulation in mobile computing platforms.
FAQ
What is the operating temperature range for the ISL6266AIRZ-T?
The ISL6266AIRZ-T is specified for –40°C to +100°C ambient operation, with junction temperature rated up to +125°C. This extended range supports deployment in thermally demanding laptop chassis and industrial edge compute modules where airflow is limited and ambient temperatures exceed standard commercial limits.
Does the ISL6266AIRZ-T support both DCR and resistive current sensing?
Yes, the ISL6266AIRZ-T natively supports both lossless inductor DCR sensing and precision discrete resistor sensing. It uses ISEN1 and ISEN2 inputs to acquire per-phase currents, sums them at VSUM, and applies NTC-based thermal compensation to maintain accuracy across temperature-verified in Figures 32 and 33 of the FN6398 datasheet.
How does the R3 Technology™ in the ISL6266AIRZ-T improve transient response?
R3 Technology™ in the ISL6266AIRZ-T synthesizes noise-free analogs of inductor ripple current and applies hysteretic comparison against the error amplifier output. During load transients, this causes automatic switching frequency increase-delivering faster voltage recovery than fixed-frequency PWM controllers while retaining 0.5% DC accuracy across the VID range.
What is the function of the PMON pin on the ISL6266AIRZ-T?
The PMON pin on the ISL6266AIRZ-T provides an analog voltage output proportional to the product of VSEN and the droop voltage, enabling real-time CPU power estimation. As shown in Figure 29, PMON delivers 0.350V at 10A and 1.680V at 40A (VIN=19V, VID=1.15V), supporting firmware-based dynamic power capping and thermal management without external components.
Can the ISL6266AIRZ-T be used in single-phase configurations?
Yes, the ISL6266AIRZ-T automatically operates in single-phase CCM mode when PSI# is asserted low, and enters diode-emulation DCM during deeper sleep (DPRSLPVR high). Its FB2 pin switches compensation networks between 1- and 2-phase modes, ensuring stability across all operating states-confirmed in Figures 18–22 of the datasheet.
ISL6266AIRZ-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:
- -40°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (7x7)
ISL6266AIRZ-T FAQ
1.How can I place an order for ISL6266AIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6266AIRZ-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 ISL6266AIRZ-T reliable?
The price and inventory of ISL6266AIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6266AIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6266AIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6266AIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6266AIRZ-T?
ISL6266AIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6266AIRZ-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 ISL6266AIRZ-T?
For technical support, including ISL6266AIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6266AIRZ-T requirements.
6.How does Aetrix verify that ISL6266AIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6266AIRZ-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 ISL6266AIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6266AIRZ-T?
All ISL6266AIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6266AIRZ-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 ISL6266AIRZ-T part is unused and in its original packaging.
Return procedure for ISL6266AIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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