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Renesas ISL8026AIRTAJZ
- Part No.:
- ISL8026AIRTAJZ
- Manufacturer:
- Renesas
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ISL8026AIRTAJZ.pdf
- Description:
- IC REG BUCK ADJ 6A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,111
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Product details
Overview
ISL8026AIRTAJZ 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, 2MHz default switching frequency, and 0.6V reference voltage with ±1.0% 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 datasheet, ISL8026AIRTAJZ pinout, ISL8026AIRTAJZ application, or ISL8026AIRTAJZ equivalent, key selection criteria include its 2MHz fixed-frequency PWM operation, internal/external compensation flexibility, soft-start/soft-stop control, hiccup-mode overcurrent protection, and thermal shutdown at 150°C - all in a compact 3×3mm TQFN-16 package with exposed pad.
Technical Context
The ISL8026AIRTAJZ employs current-mode control with slope compensation for stable high-frequency operation up to 4MHz and fast transient response. Its dual-MOSFET power stage supports 100% duty-cycle operation, enabling <180mV dropout at 6A load.
It offers selectable light-load modes: forced continuous conduction (reducing EMI) or discontinuous conduction (improving light-load efficiency), controlled via the SYNC pin. Protection includes overvoltage, overtemperature, negative current limiting, and hiccup-mode short-circuit response with auto-restart.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 6A continuous - supports high-power digital loads like FPGA I/O banks or processor cores without external boost stages. |
| Input Voltage Range | 2.5V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and intermediate bus rails. |
| Default Switching Frequency | 2MHz - enables use of sub-1µH inductors and reduces output capacitor count for compact POL designs. |
| Reference Voltage Accuracy | ±1.0% over –40°C to +85°C - ensures tight output regulation across industrial temperature range without calibration. |
| 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 - reduces bottom-FET loss during synchronous rectification phase. |
| Power-Good Delay | 1ms after regulation - provides deterministic system reset timing for downstream logic and processors. |
Pinout & Package
ISL8026AIRTAJZ is housed in a RoHS-compliant, thermally enhanced 16-lead 3×3mm TQFN package with exposed pad (L16.3x3D), requiring connection of the EPAD to SGND for optimal thermal performance and electrical stability.
| 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 to suppress high di/dt noise. |
| PHASE (Pins 11, 12, 13, 14, 15) | Switching node | Connects directly to inductor; carries high dv/dt and pulsed current - must be routed with minimal loop area. |
| PGND/SGND (Pin 10) | Combined power/signal ground | Reference point for feedback and control circuits; separates analog and power return paths internally. |
| PGND (Pins 3, 11, 12) | Power ground | Carries high-current return path from low-side FET and input capacitors - connects to PGND plane under EPAD. |
| FB (Pin 8) | Feedback input | Senses output voltage via resistor divider; sets VOUT = 0.6V × (1 + R2/R3); bias current <0.1µA enables high-impedance dividers. |
| COMP (Pin 9) | Error amplifier output | Provides compensation node for external Type II/III networks; transconductance = 120µA/V in external mode. |
| EN (Pin 5) | Enable control | Active-high logic input; pulls output to 0V and discharges VOUT via internal soft-stop switch when low. |
| FS (Pin 6) | Frequency select | Resistor-to-GND sets fSW from 500kHz–4MHz; tied to VIN for default 2MHz operation (ISL8026A). |
| SS (Pin 7) | Soft-start control | Capacitor-to-SGND adjusts ramp time; shorted to SGND yields fixed 1ms startup; limits inrush current. |
| SYNC (Pin 4) | Mode selection/synchronization | Logic high = PWM mode; low = PFM; external clock input enables system-wide switching synchronization. |
| PG (Pin 3) | Open-drain power-good | Asserts after 1ms delay once VOUT reaches regulation; requires external pull-up to VIN for proper logic level. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 36mΩ P-ch + 13mΩ N-ch MOSFETs reduce BOM count and PCB area while enabling >95% peak efficiency at 3.3VOUT/6A. |
| Adjustable Switching Frequency | 500kHz–4MHz programmability allows optimization for size (high-f) vs. efficiency (low-f) and EMI compliance. |
| Internal/External Compensation | Configurable COMP node supports both simplified internal compensation (VIN tie) and precision external loop tuning. |
| Soft-Stop Output Discharge | Internal switch actively discharges VOUT during disable - prevents floating outputs and ensures safe sequencing. |
| Hiccup-Mode Overcurrent Protection | Auto-restarts after fault clearance; avoids thermal runaway during sustained short-circuit conditions. |
| 100% Duty-Cycle Operation | Enables ultra-low dropout (<180mV @6A) - critical for battery-powered systems near end-of-discharge. |
Applications
| Microprocessor Core Supply | FPGA I/O Bank Power |
|---|---|
|
Use Scenario: Delivering tightly regulated 0.8–1.2V at up to 6A to ARM Cortex-A series or Intel Atom processor cores. IC Role / Device Role / Timing Role: Primary point-of-load (POL) regulator with fast transient response to handle dynamic CPU load steps. Use Value: ±1.0% reference accuracy and 2MHz switching ensure stable core voltage during burst-mode execution without external LDO post-regulation. |
Use Scenario: Powering configurable 1.2V/1.35V/1.8V I/O banks on Xilinx Artix-7 or Intel Cyclone V FPGAs. IC Role / Device Role / Timing Role: High-current, low-noise buck converter supporting multiple independent voltage domains. Use Value: Dual-mode (PWM/PFM) operation maintains >85% efficiency from 10mA to 6A, reducing heat in dense FPGA carrier boards. |
| Industrial PLC I/O Module | Portable Medical Instrument |
|
Use Scenario: Generating 3.3V/5V rails for isolated CAN, RS-485, and ADC front-end circuitry in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Robust, thermally efficient DC/DC stage operating continuously at –40°C to +85°C ambient. Use Value: Integrated overtemperature shutdown (150°C) and hiccup-mode OCP prevent field failures in unventilated enclosures. |
Use Scenario: Providing clean, low-noise 1.8V and 2.5V supplies for high-resolution ADCs and low-power Bluetooth SoCs in handheld diagnostics devices. IC Role / Device Role / Timing Role: Compact, low-quiescent-current buck regulator powered from single Li-ion cell (3.0–4.2V). Use Value: 50µA shutdown current and soft-stop discharge extend battery runtime and ensure safe power-down sequencing. |
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 | 3A rated, 2MHz fixed frequency, no internal soft-start timer, lower integration (no PG, no SYNC). | Limited to mid-power applications; lacks power-good signaling and light-load mode control. | Select when cost sensitivity outweighs need for 6A capability, sequencing control, or system-level monitoring. |
| TPS546B24RVFT | 6A, 1.5–18V input, PMBus interface, adjustable current limit, higher quiescent current (120µA in shutdown). | Targets digitally managed power systems; adds telemetry and dynamic margining not present in ISL8026AIRTAJZ. | Choose when firmware-based configuration, fault logging, or multi-rail coordination is required. |
Compared with MP2315DJ-LF-Z and TPS546B24RVFT, the ISL8026AIRTAJZ delivers optimal balance of analog simplicity, thermal efficiency in a 3×3mm footprint, and essential system features (PG, soft-stop, SYNC) - making it ideal for cost-sensitive, high-reliability industrial and portable POL designs where digital control overhead is unnecessary.
Availability
ISL8026AIRTAJZ is available at Aetrix Electronics and suitable for microprocessor core supplies, FPGA power delivery, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8026AIRTAJZ 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, is a global semiconductor leader specializing in microcontrollers, analog power ICs, and embedded solutions for industrial, automotive, and communications markets.
The ISL8026AIRTAJZ belongs to Renesas' high-efficiency monolithic buck regulator product line, designed specifically for space-constrained, high-current point-of-load applications in industrial automation, computing, and portable electronics.
FAQ
What is the default switching frequency of the ISL8026AIRTAJZ?
The ISL8026AIRTAJZ has a factory-default switching frequency of 2MHz, set by connecting the FS pin to VIN. This value is confirmed across –40°C to +85°C ambient and enables compact magnetics and low-output-ripple designs. Frequency can be adjusted between 500kHz and 4MHz using an external resistor from FS to GND.
Does the ISL8026AIRTAJZ support forced continuous conduction mode (FCCM)?
Yes, the ISL8026AIRTAJZ supports FCCM via the SYNC pin: driving SYNC high selects PWM mode, which enforces continuous inductor current regardless of load. This reduces output voltage ripple and EMI compared to discontinuous mode, making it suitable for noise-sensitive analog or RF subsystems powered by the ISL8026AIRTAJZ.
How does the ISL8026AIRTAJZ handle output capacitor discharge during shutdown?
The ISL8026AIRTAJZ integrates a soft-stop function that activates when EN is pulled low: an internal switch connects the output to SGND, actively discharging the output capacitor. This prevents floating voltages and ensures safe, controlled power-down sequencing - a critical feature for systems requiring strict voltage monotonicity, such as those using the ISL8026AIRTAJZ to power FPGA configuration banks.
What is the maximum output voltage accuracy specification for the ISL8026AIRTAJZ over temperature?
The ISL8026AIRTAJZ guarantees ±1.0% reference voltage accuracy over the industrial temperature range of –40°C to +85°C, and ±1.5% over –40°C to +125°C. This tolerance applies to the 0.6V internal bandgap reference, meaning output voltage error due to reference drift remains within ±12mV for a 1.2V output - verified across load, line, and temperature per datasheet Table "Electrical Specifications".
Can the ISL8026AIRTAJZ operate with 100% duty cycle, and what is the practical benefit?
Yes, the ISL8026AIRTAJZ supports true 100% duty-cycle operation, enabling output voltages approaching the input rail minus small losses. At 6A load, dropout is less than 180mV - allowing the ISL8026AIRTAJZ to maintain regulation even as input voltage sags near battery end-of-life (e.g., 3.0V Li-ion → 2.82V out), extending usable runtime in portable devices powered by the ISL8026AIRTAJZ.
ISL8026AIRTAJZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-WFQFN Exposed Pad
- Packaging:
- Tray
- 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)
ISL8026AIRTAJZ FAQ
1.How can I place an order for ISL8026AIRTAJZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8026AIRTAJZ 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 reliable?
The price and inventory of ISL8026AIRTAJZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8026AIRTAJZ is usually 5 days.
3.What payment methods are accepted for ISL8026AIRTAJZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8026AIRTAJZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8026AIRTAJZ?
ISL8026AIRTAJZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8026AIRTAJZ 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?
For technical support, including ISL8026AIRTAJZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8026AIRTAJZ requirements.
6.How does Aetrix verify that ISL8026AIRTAJZ is sourced from the original manufacturer or authorized distributors?
All ISL8026AIRTAJZ 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 meets industry standards.
7.What is the process for return or replacement of ISL8026AIRTAJZ?
All ISL8026AIRTAJZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL8026AIRTAJZ, 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 part is unused and in its original packaging.
Return procedure for ISL8026AIRTAJZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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