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Renesas ISL8026IRTAJZ-T
- Part No.:
- ISL8026IRTAJZ-T
- Manufacturer:
- Renesas
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ISL8026IRTAJZ-T.pdf
- Description:
- IC REG BUCK ADJ 6A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,246
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Product details
Overview
ISL8026IRTAJZ-T from Renesas (formerly Intersil) is a monolithic synchronous buck DC/DC regulator delivering 6A continuous output current from a 2.5V–5.5V input, featuring integrated 36mΩ P-channel and 13mΩ N-channel MOSFETs, 1MHz default switching frequency, and 0.6V reference voltage with ±1% accuracy over –40°C to +85°C. It powers microcontroller cores, FPGAs, and SoCs in space-constrained industrial and portable systems.
For engineers reviewing the ISL8026IRTAJZ-T datasheet, ISL8026IRTAJZ-T pinout, ISL8026IRTAJZ-T application, or ISL8026IRTAJZ-T equivalent, key selection criteria include its 16-pin 3×3mm TQFN package with exposed thermal pad, adjustable 500kHz–4MHz frequency, soft-start/soft-stop control, and integrated hiccup-mode overcurrent protection for reliable POL deployment.
Technical Context
The ISL8026IRTAJZ-T employs current-mode PWM control with slope compensation for fast transient response and stable loop behavior across wide duty cycles-including 100% operation for <180mV dropout at 6A. Its dual-MOSFET power stage enables high efficiency up to 95% while minimizing external component count.
It supports configurable light-load operation (forced continuous or discontinuous mode), external synchronization up to 4MHz, and comprehensive fault protection including overtemperature shutdown (150°C trip), overvoltage, undervoltage, and negative current limiting-ensuring robustness in dynamic load environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous-supports high-current digital loads like FPGA I/O banks without external boost stages. |
| Input Voltage Range | 2.5V to 5.5V-compatible with single-cell Li-ion (3.0–4.2V), 3.3V rails, and USB-powered systems. |
| Default Switching Frequency | 1MHz-enables compact magnetics (e.g., 1µH inductor) and balances EMI vs. efficiency trade-offs. |
| Reference Voltage Accuracy | ±1.0% over –40°C to +85°C-ensures tight output regulation for sensitive logic supplies. |
| ON-Resistance (HS/LG) | 36mΩ / 13mΩ typical-minimizes conduction loss and improves full-load efficiency beyond 93%. |
| Soft-Start Time | 1ms internal (SS tied to SGND)-prevents inrush current during power-up in multi-rail systems. |
| Thermal Shutdown | 150°C with 25°C hysteresis-protects against sustained overload or poor PCB heatsinking. |
Pinout & Package
ISL8026IRTAJZ-T is housed in a RoHS-compliant, thermally enhanced 16-lead 3×3mm TQFN package with exposed pad (L16.3x3D), optimized for low θJA = 47°C/W and minimal board area (<142mm² total solution).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 1,2,16) | Input supply rail | Accepts 2.5–5.5V; requires ≥2×22µF ceramic decoupling close to pins for stability. |
| PHASE (Pins 11,12,13,14,15) | Switch node | Connects to inductor; carries high di/dt; internal 100Ω discharge path when disabled. |
| PGND/SGND (Pin 10) | Signal/power ground reference | Separate ground return for feedback and control circuitry; must tie to exposed pad. |
| PGND (Pins 3,11,12) | Power ground | Low-impedance return for high-current paths; multiple pins reduce IR drop and noise coupling. |
| FB (Pin 8) | Feedback input | Senses output voltage via resistor divider; sets VOUT = 0.6V × (1 + R2/R3); bias current <0.1µA. |
| COMP (Pin 9) | Error amplifier output | Internal compensation node; connect to VIN for standard configuration; external network optional for tuning. |
| EN (Pin 5) | Enable control | Active-high logic input; pulls output capacitor to ground via internal soft-stop switch when low. |
| FS (Pin 6) | Frequency select | Resistor-to-GND sets fSW from 500kHz–4MHz; default 1MHz when tied to VIN. |
| SYNC (Pin 4) | Mode/sync input | Selects PWM/PFM or external clock sync (positive-edge triggered); internal 1MΩ pull-down. |
| SS (Pin 7) | Soft-start timing | Capacitor-to-SGND extends ramp time; 1ms default when shorted to SGND; max 33nF. |
| PG (Pin 3) | Power-good indicator | Open-drain output with 1ms delay after regulation; requires external pull-up to VIN. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 36mΩ HS P-FET + 13mΩ LS N-FET eliminates external MOSFETs and reduces BOM count by ≥4 components. |
| 100% Duty Cycle Operation | Enables ultra-low dropout (<180mV @ 6A), critical for battery-powered systems near end-of-discharge. |
| Adjustable Switching Frequency | 500kHz–4MHz range allows optimization of inductor size, efficiency, and EMI filtering for each design. |
| Internal Soft-Start & Soft-Stop | 1ms controlled ramp-up prevents inrush; active discharge during disable avoids floating outputs in multi-rail sequencing. |
| Hiccup-Mode Overcurrent Protection | Auto-retry current limiting during short-circuit events maintains system integrity without latch-off. |
| Thermal & Electrical Protections | Includes overtemperature (150°C), overvoltage, undervoltage, and negative current detection-no external monitoring IC needed. |
Applications
| Microcontroller Core Supply | FPGA I/O Bank Power |
|---|---|
Use Scenario: Providing clean, tightly regulated 1.2V/1.8V to ARM Cortex-A/M series processors in industrial gateways. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering 6A peak current with fast load-step response (<5% deviation). Use Value: Maintains CPU stability during burst-mode execution; ±1% VREF ensures timing margin compliance per ARM spec. | Use Scenario: Powering Xilinx Artix-7 or Intel Cyclone V FPGA I/O banks requiring 2.5V/3.3V at up to 6A. IC Role / Device Role / Timing Role: High-current, low-noise DC/DC converter with forced continuous mode to suppress RF interference near high-speed transceivers. Use Value: Reduces EMI-induced bit errors in PCIe or Gigabit Ethernet interfaces; 1MHz switching avoids critical band harmonics. |
| Portable Instrument Power | Industrial PC VRM |
Use Scenario: Supplying 0.8V–1.5V to ADC/DAC signal chains and microcontrollers in handheld test equipment. IC Role / Device Role / Timing Role: Compact, thermally efficient buck regulator enabling battery life extension via PFM mode at light loads. Use Value: Achieves >90% efficiency at 100mA (PFM), doubling runtime versus fixed-frequency alternatives in standby. | Use Scenario: Delivering 1.05V/1.8V to Intel Atom or AMD G-series SoCs in fanless IPCs operating at –40°C to +85°C. IC Role / Device Role / Timing Role: Industrial-grade POL regulator with extended temp rating and robust thermal shutdown (150°C). Use Value: Eliminates need for external thermal sensors; exposed pad + vias ensure junction temp stays within spec under full load. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2315DJ-LF-Z | 4A rated, 2.5–5.5V input, fixed 1.2MHz fSW, no SYNC pin, smaller 8-pin SOIC-EP package | Limited to lower-current applications; lacks external sync and programmable frequency | Choose for cost-sensitive, space-constrained designs where 4A suffices and frequency flexibility is unnecessary. |
| TPS54620RGYT | 6A rated, 4.5–17V input, 350kHz–3.5MHz adjustable fSW, integrated boot capacitor, higher VIN range | Requires higher minimum input voltage; better suited for 5V/12V intermediate bus architectures | Prefer when sourcing from 5V/12V rails rather than Li-ion or 3.3V; offers superior high-VIN transient performance. |
Compared with MP2315DJ-LF-Z and TPS54620RGYT, the ISL8026IRTAJZ-T uniquely combines 6A capability, 2.5V minimum input, 1MHz default frequency, and full protection suite in a 3×3mm footprint-making it optimal for low-input-voltage, high-density POL designs where thermal management and light-load efficiency are critical.
Availability
ISL8026IRTAJZ-T is available at Aetrix Electronics and suitable for industrial PCs, portable instrumentation, and FPGA-based embedded systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across temperature extremes.
Supply support for ISL8026IRTAJZ-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 is a global semiconductor leader formed from the merger of Renesas Technology and NEC Electronics, specializing in microcontrollers, analog power, and connectivity solutions for industrial, automotive, and infrastructure markets.
The ISL8026IRTAJZ-T belongs to Renesas' high-efficiency monolithic buck regulator product line, designed specifically for demanding point-of-load applications in space- and thermal-constrained embedded systems where reliability, integration, and precision regulation are essential.
FAQ
What is the maximum output current supported by the ISL8026IRTAJZ-T?
The ISL8026IRTAJZ-T delivers up to 6A of continuous output current under recommended operating conditions (TA ≤ +85°C, proper PCB layout, and thermal management). Peak current capability reaches 11A before hiccup-mode overcurrent protection activates, ensuring safe operation during transient surges without damage.
Does the ISL8026IRTAJZ-T support external frequency synchronization?
Yes, the ISL8026IRTAJZ-T supports external synchronization via the SYNC pin, accepting positive-edge-triggered clock signals up to 4MHz. This enables precise timing alignment with system clocks or other converters to minimize beat frequencies and simplify EMI filter design in multi-rail power architectures.
How does the ISL8026IRTAJZ-T handle light-load efficiency?
The ISL8026IRTAJZ-T offers selectable light-load operation: forced continuous conduction mode (CCM) reduces noise and EMI, while discontinuous conduction mode (DCM) improves efficiency by eliminating switching losses below ~1A. Mode selection is controlled via the SYNC pin, allowing dynamic optimization per system state.
What thermal performance can be expected from the ISL8026IRTAJZ-T in a typical 2-layer PCB layout?
In a standard 2-layer PCB with 1oz copper, 6 thermal vias under the exposed pad, and 1in² of 2oz copper pour on the bottom layer, the ISL8026IRTAJZ-T achieves θJA ≈ 65°C/W. At 6A and 5V input, this yields ~45°C junction rise above ambient-well within the 125°C max rating and enabling reliable operation without forced airflow.
Can the ISL8026IRTAJZ-T operate with a 2.5V input and 0.8V output at full 6A load?
Yes, the ISL8026IRTAJZ-T supports 2.5V input down to 0.6V output and maintains regulation at 6A with <180mV dropout due to its 100% duty-cycle capability. At 2.5VIN/0.8VOUT, efficiency exceeds 88% (per Figure 4), and thermal performance remains within spec when using recommended layout practices and thermal vias.
ISL8026IRTAJZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 6A
- Frequency - Switching:
- 490kHz ~ 4.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
ISL8026IRTAJZ-T FAQ
1.How can I place an order for ISL8026IRTAJZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8026IRTAJZ-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 ISL8026IRTAJZ-T reliable?
The price and inventory of ISL8026IRTAJZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8026IRTAJZ-T is usually 5 days.
3.What payment methods are accepted for ISL8026IRTAJZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8026IRTAJZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8026IRTAJZ-T?
ISL8026IRTAJZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8026IRTAJZ-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 ISL8026IRTAJZ-T?
For technical support, including ISL8026IRTAJZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8026IRTAJZ-T requirements.
6.How does Aetrix verify that ISL8026IRTAJZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8026IRTAJZ-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 ISL8026IRTAJZ-T meets industry standards.
7.What is the process for return or replacement of ISL8026IRTAJZ-T?
All ISL8026IRTAJZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8026IRTAJZ-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 ISL8026IRTAJZ-T part is unused and in its original packaging.
Return procedure for ISL8026IRTAJZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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