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Renesas ISL8026AIRTAJZ-T7A
- Part No.:
- ISL8026AIRTAJZ-T7A
- Manufacturer:
- Renesas
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ISL8026AIRTAJZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 6A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,697
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Product details
Overview
ISL8026AIRTAJZ-T7A from Renesas Electronics (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, 2MHz default switching frequency, and 1.0% reference 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 ISL8026AIRTAJZ-T7A datasheet, ISL8026AIRTAJZ-T7A pinout, ISL8026AIRTAJZ-T7A application, or ISL8026AIRTAJZ-T7A equivalent, key selection criteria include its 2MHz fixed-frequency PWM operation, internal soft-start with 1ms ramp, hiccup-mode overcurrent protection, and compatibility with external synchronization up to 4MHz.
Technical Context
The ISL8026AIRTAJZ-T7A employs current-mode control architecture for fast transient response and stable loop behavior at high duty cycles, including 100% duty-cycle operation enabling <180mV dropout at 6A. Its dual-MOSFET power stage supports forced continuous conduction mode (CCM) to suppress EMI or discontinuous conduction mode (DCM) for light-load efficiency optimization.
Fault management includes internal hiccup-mode current limiting, thermal shutdown at 150°C with 25°C hysteresis, overvoltage and undervoltage protection on FB, and negative current limiting down to –3.0A. The PG signal provides 1ms delay after regulation is achieved and monitors output voltage via the FB pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5V to 5.5V - supports single-cell Li-ion, 3.3V/5V rails, and intermediate bus architectures |
| Max Output Current | 6A continuous - sufficient for high-performance µP/FPGA core supplies without external heatsinking |
| Default Switching Frequency | 2MHz - enables compact magnetics and low-profile output capacitors (e.g., 2×22µF ceramic) |
| Reference Voltage Accuracy | ±1.0% (–40°C to +85°C) - ensures tight output regulation across industrial temperature range |
| High-Side RDS(on) | 36mΩ typical at 5V VIN - minimizes conduction loss and improves full-load efficiency up to 95% |
| Soft-Start Time | 1ms (internal) - prevents inrush current during power-up; adjustable via external capacitor on SS pin |
| Power-Good Delay | 1ms - provides deterministic system sequencing timing for downstream logic or reset controllers |
Pinout & Package
The ISL8026AIRTAJZ-T7A is housed in a RoHS-compliant, thermally enhanced 16-lead 3mm × 3mm TQFN package with exposed pad (L16.3x3D), optimized for PCB heat dissipation via multiple vias to SGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 1,2,16) | Input power supply | Accepts 2.5V–5.5V; requires ≥2×22µF local ceramic decoupling to PGND |
| PHASE (Pins 13–15) | Switching node | Connects directly to inductor; carries high di/dt; internal 100Ω discharge path when disabled |
| PGND/SGND (Pin 10) | Combined power/signal ground | Reference for feedback and control circuits; must be tied to exposed pad |
| PGND (Pins 11,12) | Power ground return | Low-impedance path for high-current switch node return; separate from SGND in layout best practice |
| FB (Pin 8) | Feedback input | Senses output voltage via resistor divider; used by PG and UV/OV protection circuitry |
| 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; pulls output capacitor to ground via internal soft-stop switch when low |
| FS (Pin 6) | Frequency select | Resistor-to-GND sets fSW from 500kHz to 4MHz; default 2MHz when tied to VIN |
| SS (Pin 7) | Soft-start control | 1ms internal ramp when shorted to SGND; external capacitor extends ramp time |
| SYNC (Pin 4) | Mode/synchronization | Selects PWM (high), PFM (low), or external clock sync (edge-triggered up to 4MHz) |
| PG (Pin 3) | Power-good indicator | Open-drain output with 1ms delay; requires external pull-up to VIN |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 36mΩ P-FET + 13mΩ N-FET reduces BOM count and improves thermal performance vs discrete solutions |
| 100% Duty-Cycle Operation | Enables ultra-low dropout (<180mV @ 6A), critical for near-input-output voltage applications |
| Configurable Light-Load Mode | PFM or forced CCM selection via SYNC pin balances efficiency vs EMI requirements |
| Comprehensive Fault Protection | Hiccup OCP, thermal shutdown, OV/UV on FB, and negative current limit prevent damage under fault conditions |
| Flexible Compensation | Supports both internal (COMP tied to VIN) and external compensation networks for stability across wide output capacitor ranges |
Applications
| Microprocessor Core Supply | FPGA I/O Bank Power |
|---|---|
Use Scenario: Providing tightly regulated 0.8V–1.2V at up to 6A to ARM Cortex-A series or Intel Atom processors in industrial gateways. IC Role / Device Role / Timing Role: Primary POL regulator delivering dynamic load current with sub-100ns transient response and ±1% output accuracy. Use Value: Eliminates need for external MOSFET drivers and discrete compensation components, reducing board area by >30% vs controller+external FET solution. | Use Scenario: Powering 1.8V or 2.5V I/O banks of Xilinx Artix-7 or Intel Cyclone V FPGAs in test equipment with strict noise budgets. IC Role / Device Role / Timing Role: Synchronous buck converter operating in forced CCM mode to suppress switching noise near sensitive analog sections. Use Value: 2MHz switching frequency allows use of small 0.33µH inductors and low-ESR ceramic capacitors, minimizing conducted EMI. |
| Li-ion Powered Portable Instrument | Industrial PC VR12-Compatible Rail |
Use Scenario: Generating 3.3V at 4A from a single 3.7V nominal Li-ion cell in handheld spectrum analyzers. IC Role / Device Role / Timing Role: High-efficiency step-down regulator supporting battery discharge down to 2.8V while maintaining regulation. Use Value: 95% peak efficiency and 50µA quiescent current in PFM mode extend runtime between charges. | Use Scenario: Delivering 1.05V/6A VR12-compliant CPU core rail in fanless IPCs requiring robust thermal performance. IC Role / Device Role / Timing Role: Monolithic buck regulator with exposed-pad TQFN package mounted directly to inner ground plane for low-θJA (47°C/W). Use Value: Integrated 100% duty-cycle capability maintains regulation during cold-start brownout events below 3.0V input. |
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 max output, 2MHz fixed frequency, no internal soft-start timer, lower VIN min (2.5V same), higher RDS(on) (60mΩ/30mΩ) | Limited to ≤4A loads; lacks programmable frequency and hiccup-mode OCP | Lower-cost option for non-critical 4A applications where thermal margin is ample and sequencing simplicity is prioritized |
| TPS54620RGYT | 6A output, 2.2MHz default, integrated boot capacitor, higher IQ (120µA), no 100% duty cycle | Requires external boot capacitor; cannot support ultra-low dropout scenarios | Better for designs needing tighter EMI control via spread-spectrum and higher integration, but unsuitable for <300mV dropout cases |
Compared with MP2315DJ-LF-Z and TPS54620RGYT, the ISL8026AIRTAJZ-T7A uniquely combines 6A capability, 2MHz operation, 100% duty cycle, and hiccup-mode protection in a 3×3mm footprint-making it optimal for high-density, thermally constrained POL applications demanding reliability across industrial temperature ranges.
Availability
ISL8026AIRTAJZ-T7A is available at Aetrix Electronics and suitable for FPGA power delivery, microprocessor core supplies, and Li-ion powered portable instrumentation requiring stable component supply and long-term industrial lifecycle support.
Supply support for ISL8026AIRTAJZ-T7A 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 ICs, and embedded solutions.
The ISL8026AIRTAJZ-T7A belongs to Renesas' high-efficiency monolithic buck regulator product line, designed specifically for point-of-load power delivery in space- and thermal-constrained industrial, computing, and portable electronics.
FAQ
What is the default switching frequency of the ISL8026AIRTAJZ-T7A?
The ISL8026AIRTAJZ-T7A has a factory-configured default switching frequency of 2MHz when the FS pin is connected to VIN. This value is confirmed in the Ordering Information table (Page 4) and Electrical Specifications (Page 7) of FN8736 Rev 2.00, and remains stable across –40°C to +85°C ambient temperatures. The ISL8026AIRTAJZ-T7A supports adjustment from 500kHz to 4MHz using an external resistor on the FS pin.
Does the ISL8026AIRTAJZ-T7A support 100% duty-cycle operation?
Yes, the ISL8026AIRTAJZ-T7A supports true 100% duty-cycle operation, enabling output voltages within 180mV of the input rail at 6A load. This feature is explicitly documented in the datasheet introduction (Page 1) and Theory of Operation section (Page 18), allowing the ISL8026AIRTAJZ-T7A to maintain regulation during low-input-voltage conditions such as Li-ion battery discharge or cold-start scenarios.
How does the ISL8026AIRTAJZ-T7A handle overcurrent faults?
The ISL8026AIRTAJZ-T7A implements hiccup-mode overcurrent protection, which latches off the power stage upon detection of excessive current (typical 7.5–11A peak limit), waits for thermal recovery, then attempts automatic restart. This behavior is detailed in the "Overcurrent Protection" subsection (Page 18) and Electrical Specifications (Page 6). The ISL8026AIRTAJZ-T7A also includes negative current limiting (–3.0A) and zero-cross sensing to prevent reverse inductor current.
Can the ISL8026AIRTAJZ-T7A be synchronized to an external clock?
Yes, the ISL8026AIRTAJZ-T7A supports external synchronization up to 4MHz via the SYNC pin, which accepts positive-edge-triggered clock signals. When SYNC is driven by an external source, the internal oscillator locks to the incoming frequency, enabling noise-sensitive systems to avoid beat frequencies. This capability is specified in the Pin Descriptions (Page 3) and Electrical Specifications (Page 7) of FN8736 Rev 2.00.
What is the thermal resistance (θJA) of the ISL8026AIRTAJZ-T7A package?
The ISL8026AIRTAJZ-T7A in its 16-lead 3×3mm TQFN package has a junction-to-ambient thermal resistance (θJA) of 47°C/W under standard JEDEC high-efficiency board conditions. This value is listed in the Thermal Information table (Page 6) and assumes proper PCB layout with the exposed pad soldered to a solid SGND plane using multiple thermal vias. θJC is 6.5°C/W to the exposed pad.
ISL8026AIRTAJZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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)
ISL8026AIRTAJZ-T7A FAQ
1.How can I place an order for ISL8026AIRTAJZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8026AIRTAJZ-T7A 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 ISL8026AIRTAJZ-T7A reliable?
The price and inventory of ISL8026AIRTAJZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8026AIRTAJZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL8026AIRTAJZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8026AIRTAJZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8026AIRTAJZ-T7A?
ISL8026AIRTAJZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8026AIRTAJZ-T7A 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 ISL8026AIRTAJZ-T7A?
For technical support, including ISL8026AIRTAJZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8026AIRTAJZ-T7A requirements.
6.How does Aetrix verify that ISL8026AIRTAJZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL8026AIRTAJZ-T7A 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 ISL8026AIRTAJZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL8026AIRTAJZ-T7A?
All ISL8026AIRTAJZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL8026AIRTAJZ-T7A, 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 ISL8026AIRTAJZ-T7A part is unused and in its original packaging.
Return procedure for ISL8026AIRTAJZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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