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Renesas ISL8026AFRTAJZ-T7A
- Part No.:
- ISL8026AFRTAJZ-T7A
- Manufacturer:
- Renesas
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ISL8026AFRTAJZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 6A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,574
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Product details
Overview
ISL8026AFRTAJZ-T7A from Renesas (formerly Intersil) is a monolithic synchronous buck 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 0.6V reference voltage with ±1.5% accuracy over –40°C to +125°C. It powers FPGA core rails in industrial embedded systems requiring high efficiency and thermal robustness.
For engineers reviewing the ISL8026AFRTAJZ-T7A datasheet, ISL8026AFRTAJZ-T7A pinout, ISL8026AFRTAJZ-T7A application, or ISL8026AFRTAJZ-T7A equivalent, key selection criteria include its 2MHz fixed-frequency operation, 100% duty-cycle capability for ultra-low dropout (<180mV at 6A), internal/external compensation flexibility, and full-temperature-range (-40°C to +125°C) rated performance.
Technical Context
The ISL8026AFRTAJZ-T7A employs current-mode control architecture enabling fast transient response and stable loop behavior at high frequencies. Its dual-MOSFET power stage-optimized for low conduction loss-supports forced continuous conduction mode (CCM) to suppress EMI or discontinuous conduction mode (DCM) for light-load efficiency.
Fault protection includes hiccup-mode overcurrent limiting, thermal shutdown at 150°C with 25°C hysteresis, overvoltage and undervoltage monitoring via FB, and soft-stop output discharge during disable. The PG signal provides 1ms delay after regulation is achieved, and EN supports logic-level shutdown with sub-8µA quiescent current.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous - supports high-power SoC/FPGA core rails without external current boosting |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion, 3.3V, and 5V intermediate bus architectures |
| Default Switching Frequency | 2MHz - enables compact magnetics and reduces output ripple without sacrificing efficiency |
| Reference Voltage Accuracy | ±1.5% over –40°C to +125°C - ensures stable output regulation across extended industrial temperature range |
| High-Side RDS(on) | 36mΩ typical at 5V VIN - minimizes conduction loss and improves full-load efficiency up to 95% |
| Low-Side RDS(on) | 13mΩ typical at 5V VIN - complements high-side FET for balanced power-stage efficiency |
| Duty Cycle Range | 0–100% - supports ultra-low dropout operation (e.g., 1.8VOUT from 2.0V input) |
| Power-Good Delay | 1ms - provides deterministic system sequencing timing for downstream logic initialization |
Pinout & Package
ISL8026AFRTAJZ-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 2.5–5.5V; requires ≥2×22µF local ceramic decoupling to PGND |
| PHASE (Pins 11,12,13,14,15) | Switching node | Connects directly to inductor; internally discharged via 100Ω resistor during shutdown |
| PGND/SGND (Pin 10) | Signal ground reference | Separate ground return for feedback and error amplifier; must tie to exposed pad |
| PGND (Pins 11,12) | Power ground | Low-impedance return path for high-current switching loops |
| FB (Pin 8) | Feedback input | Monitors output voltage via resistor divider; sets VOUT = 0.6V × (1 + R2/R3) |
| COMP (Pin 9) | Error amplifier output | Supports internal compensation (tie to VIN) or external network for custom loop tuning |
| EN (Pin 5) | Enable control | Active-high logic input; pulls output capacitor to ground when low for safe discharge |
| FS (Pin 6) | Frequency select | Resistor-to-GND sets fSW from 500kHz–4MHz; tied to VIN for 2MHz default |
| SS (Pin 7) | Soft-start control | 1ms internal ramp when shorted to SGND; capacitor extends ramp time for inrush control |
| SYNC (Pin 4) | Mode/sync input | Selects PWM (high), PFM (low), or external clock sync (edge-triggered) |
| 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 eliminates external MOSFETs and gate drivers, reducing BOM count and layout complexity |
| 100% Duty-Cycle Operation | Enables <180mV dropout at 6A, critical for low-VIN applications like battery backup or post-regulation |
| Thermal Robustness | Rated for –40°C to +125°C ambient and 150°C junction shutdown with 25°C hysteresis for reliable industrial operation |
| Flexible Compensation | Internal compensation (COMP-to-VIN) simplifies design; external COMP network allows optimization for varied output capacitors and loads |
| Programmable Frequency | 500kHz–4MHz adjustment via FS resistor supports EMI compliance and size/efficiency trade-offs |
| Soft-Stop Discharge | Internal switch actively discharges output capacitor during disable, preventing floating-rail issues in multi-rail systems |
Applications
| Industrial PC Core Power | FPGA I/O Bank Supply |
|---|---|
Use Scenario: Powering 1.2V/3A I/O banks in programmable logic devices deployed in factory automation controllers. IC Role / Device Role / Timing Role: Primary synchronous buck converter regulating tightly-toleranced I/O voltage with fast load-step response. Use Value: 2MHz switching enables small 0.33µH inductors and low-ESR ceramic output caps, reducing board area by >30% vs. 500kHz solutions. | Use Scenario: Delivering 1.8V/6A to FPGA core logic in ruggedized edge AI inference modules operating at +125°C ambient. IC Role / Device Role / Timing Role: High-current DC/DC POL regulator with full-temperature-rated reference and thermal shutdown. Use Value: ±1.5% VREF accuracy and 150°C thermal cutoff ensure reliable operation where cooling is constrained. |
| Li-ion Powered Test Equipment | Rugged Router Line Card |
Use Scenario: Regulating 3.3V/4A from a 3.6V nominal Li-ion cell in portable oscilloscope front-end modules. IC Role / Device Role / Timing Role: Input-efficient buck converter maintaining regulation down to 2.7V cell voltage. Use Value: 100% duty cycle and low RDS(on) deliver >92% efficiency at 2.7VIN/3.3VOUT, extending battery runtime. | Use Scenario: Generating 1.0V/5A for network processor cores in telecom line cards subjected to wide ambient swings. IC Role / Device Role / Timing Role: High-density, thermally optimized POL regulator on space-constrained carrier boards. Use Value: 3×3mm TQFN package with exposed pad achieves θJA = 47°C/W, enabling 6A delivery without heatsinks. |
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, 2MHz fixed, 2.5–5.5V input, but lacks 100% duty cycle and has only 1.2% VREF accuracy over –40°C to +125°C | Suitable for lower-current applications where ultra-low dropout is not required | Choose MP2315DJ-LF-Z only if output current ≤4A and dropout margin >300mV is acceptable |
| TPS546B24RVFT | 6A rated, 4-phase capable, 3.0–20V input, supports PMBus, but larger 20-pin QFN and higher minimum input voltage | Better for high-input-voltage, digitally controlled, multi-phase systems | Select TPS546B24RVFT when input exceeds 5.5V or digital telemetry and phase interleaving are needed |
Compared with MP2315DJ-LF-Z and TPS546B24RVFT, the ISL8026AFRTAJZ-T7A uniquely balances 6A capability, 2.5V minimum input, 100% duty cycle, and compact 3×3mm footprint - making it optimal for space- and input-voltage-constrained industrial POL designs.
Availability
ISL8026AFRTAJZ-T7A is available at Aetrix Electronics and suitable for industrial PCs, FPGA power modules, and Li-ion-powered test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL8026AFRTAJZ-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, formed from the merger of Intersil and Renesas, delivers high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and computing markets.
The ISL8026AFRTAJZ-T7A belongs to Renesas' high-efficiency monolithic buck regulator product line, designed specifically for point-of-load power delivery in thermally demanding, space-constrained industrial and embedded applications.
FAQ
What is the maximum output current rating of the ISL8026AFRTAJZ-T7A?
The ISL8026AFRTAJZ-T7A is rated for 6A continuous output current under recommended operating conditions (2.5V–5.5V input, –40°C to +125°C ambient). This rating assumes proper PCB thermal design using the exposed pad and adequate input/output capacitance per the datasheet guidelines. Derating applies above +85°C ambient per thermal resistance curves in FN8736 Rev 2.00.
Does the ISL8026AFRTAJZ-T7A support 100% duty-cycle operation, and what is its practical benefit?
Yes, the ISL8026AFRTAJZ-T7A supports true 100% duty-cycle operation, enabling output voltages within ~180mV of the input rail at 6A load. This is essential for applications like Li-ion battery backup (e.g., 3.3VOUT from 3.48V cell) or post-regulation where minimal dropout preserves system headroom and extends usable battery life.
How does the ISL8026AFRTAJZ-T7A differ from the ISL8026FRTAJZ variant?
The ISL8026AFRTAJZ-T7A features a 2MHz default switching frequency and is rated for –40°C to +125°C operation, whereas the ISL8026FRTAJZ defaults to 1MHz and shares the same temperature range. Both use identical pinout and package, but the 'A' suffix denotes the higher-frequency variant optimized for smaller passive components in thermally aggressive environments.
Can the ISL8026AFRTAJZ-T7A be synchronized to an external clock, and what are the timing requirements?
Yes, the ISL8026AFRTAJZ-T7A supports external synchronization via the SYNC pin, accepting TTL/CMOS-compatible clocks up to 4MHz with positive-edge triggering. The SYNC pin has 0.75V threshold and 0.15V hysteresis; external clock rise/fall times must be ≤10ns to avoid metastability, and duty cycle should be 40–60% for reliable locking per FN8736 Section "Frequency Adjust".
What protection features are integrated into the ISL8026AFRTAJZ-T7A?
The ISL8026AFRTAJZ-T7A integrates hiccup-mode overcurrent protection, thermal shutdown at 150°C (25°C hysteresis), output overvoltage and undervoltage detection via FB, negative current limiting (–1.5A to –4.5A), and soft-stop output discharge during disable. All protections operate without external components and are active across the full –40°C to +125°C temperature range.
ISL8026AFRTAJZ-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 ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
ISL8026AFRTAJZ-T7A FAQ
1.How can I place an order for ISL8026AFRTAJZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8026AFRTAJZ-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 ISL8026AFRTAJZ-T7A reliable?
The price and inventory of ISL8026AFRTAJZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8026AFRTAJZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL8026AFRTAJZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8026AFRTAJZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8026AFRTAJZ-T7A?
ISL8026AFRTAJZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8026AFRTAJZ-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 ISL8026AFRTAJZ-T7A?
For technical support, including ISL8026AFRTAJZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8026AFRTAJZ-T7A requirements.
6.How does Aetrix verify that ISL8026AFRTAJZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL8026AFRTAJZ-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 ISL8026AFRTAJZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL8026AFRTAJZ-T7A?
All ISL8026AFRTAJZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL8026AFRTAJZ-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 ISL8026AFRTAJZ-T7A part is unused and in its original packaging.
Return procedure for ISL8026AFRTAJZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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