My Inquiry
My Account
Renesas ISL8026AFRTAJZ-T
- Part No.:
- ISL8026AFRTAJZ-T
- Manufacturer:
- Renesas
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ISL8026AFRTAJZ-T.pdf
- Description:
- IC REG BUCK ADJ 6A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,354
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL8026AFRTAJZ-T from Renesas (formerly Intersil) is a monolithic synchronous buck regulator delivering 6A continuous output current from 2.5V–5.5V input, featuring integrated 36mΩ P-channel and 13mΩ N-channel MOSFETs, 2MHz default switching frequency, and 100% duty-cycle operation enabling <180mV dropout at full load. It powers microcontroller cores, FPGAs, and SoCs in space-constrained industrial and portable systems.
For engineers reviewing the ISL8026AFRTAJZ-T datasheet, ISL8026AFRTAJZ-T pinout, ISL8026AFRTAJZ-T application, or ISL8026AFRTAJZ-T equivalent, key selection criteria include its -40°C to +125°C operating range, internal/external compensation flexibility, soft-start/soft-stop control, hiccup-mode overcurrent protection, and compatibility with both PWM and PFM light-load modes.
Technical Context
The ISL8026AFRTAJZ-T employs current-mode control with slope compensation for fast transient response and stable loop behavior across 500kHz–4MHz adjustable switching frequencies. Its dual-MOSFET power stage supports forced continuous conduction mode (CCM) to suppress EMI or discontinuous conduction mode (DCM) to maximize light-load efficiency.
Fault management includes hiccup-mode current limiting during short-circuit events, thermal shutdown at 150°C with 25°C hysteresis, overvoltage and undervoltage monitoring via FB, and negative current detection down to -3.0A. The 1ms PG timer and open-drain power-good output provide precise system sequencing feedback.
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 point-of-load inputs. |
| Max Output Current | 6A continuous - sufficient for high-performance μC/FPGA core supplies without external heatsinking. |
| Default Switching Frequency | 2MHz - enables compact magnetics and low-output-ripple designs in tight PCB layouts. |
| 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 - reduces bottom-FET loss and supports high-efficiency CCM operation. |
| Power-Good Delay | 1ms after VOUT reaches regulation - provides deterministic timing for downstream enable sequencing. |
| Thermal Shutdown Threshold | 150°C junction - protects against sustained overload or poor airflow in sealed enclosures. |
Pinout & Package
ISL8026AFRTAJZ-T is housed in a RoHS-compliant 16-lead 3mm × 3mm TQFN package with exposed thermal pad (L16.3x3D), optimized for low-inductance layout and efficient heat dissipation via SGND-connected vias.
| 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 for stability. |
| 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 FB, SS, COMP; must be tied to exposed pad for optimal noise immunity and thermal performance. |
| PGND (Pins 11,12) | Power ground return | Low-impedance return path for high-current switching loops; separate from SGND in critical layouts. |
| FB (Pin 8) | Feedback input | Monitors output voltage via resistor divider; sets VOUT = 0.6V × (1 + R2/R3); used for UV/OV detection. |
| COMP (Pin 9) | Error amplifier output | Internal compensation node; connect to VIN for standard configuration or add external network for custom loop tuning. |
| EN (Pin 5) | Enable control | Active-high logic input; pulls output capacitor to GND via internal soft-stop switch when low. |
| FS (Pin 6) | Frequency select | Resistor-to-GND sets fSW from 500kHz–4MHz; default 2MHz when tied to VIN per ISL8026A spec. |
| SS (Pin 7) | Soft-start control | 1ms internal ramp when grounded; external capacitor extends ramp time for inrush current limiting. |
| SYNC (Pin 4) | Mode/synchronization | Selects PWM (high), PFM (low), or external clock sync (edge-triggered); includes 1MΩ internal pull-down. |
| PG (Pin 3) | Power-good indicator | Open-drain output with 1ms delay; requires external pull-up to VIN for system reset/enable coordination. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Power Stage | 36mΩ P-ch + 13mΩ N-ch MOSFETs reduce BOM count and improve efficiency vs discrete solutions. |
| 100% Duty-Cycle Operation | Enables ultra-low dropout (<180mV @ 6A), critical for battery-powered systems near end-of-discharge. |
| Adjustable Light-Load Mode | Configurable PWM/DCM via SYNC pin - balances EMI reduction (forced CCM) and efficiency (PFM). |
| Comprehensive Protection Suite | Hiccup OCP, thermal shutdown, OV/UV on FB, negative current limit, and soft-stop discharge prevent damage under fault conditions. |
| Flexible Compensation | Supports internal (COMP-to-VIN) or external compensation networks for robust loop stability across varied output caps and loads. |
Applications
| DC/DC POL Modules | μC/FPGA Core Power |
|---|---|
Use Scenario: Compact, high-density DC/DC modules for telecom and networking equipment requiring multiple regulated rails. IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering 0.6V–5.5V programmable output at up to 6A with minimal external components. Use Value: 3×3mm footprint and <142mm² total solution area enable multi-rail integration in space-limited modules. | Use Scenario: Core voltage supply for ARM-based microcontrollers and Xilinx/Intel FPGAs in industrial edge devices. IC Role / Device Role / Timing Role: High-accuracy (±1.5%), low-noise power source with 1ms PG assertion for safe processor boot sequencing. Use Value: 2MHz default switching frequency allows use of sub-1µH inductors, reducing size and cost versus lower-frequency alternatives. |
| Video Processor/SOC Power | Li-ion Battery Powered Devices |
Use Scenario: Power delivery for mobile video processors and application SoCs in portable instrumentation and medical imaging. IC Role / Device Role / Timing Role: Efficient step-down regulator supporting dynamic voltage scaling (DVS) via adjustable FB divider and fast transient response. Use Value: Current-mode control with slope compensation delivers <5% output deviation during 1A–6A load steps, preserving signal integrity. | Use Scenario: Main system rail in handheld test equipment, portable analyzers, and ruggedized field tools. IC Role / Device Role / Timing Role: Input-stage buck converter accepting 3.0–4.2V Li-ion battery range and delivering stable 1.2V/1.8V/3.3V outputs. Use Value: 100% duty-cycle capability maintains regulation down to 2.68V input, extending usable battery life by >15% vs non-100% ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS546B24RVFT | 40A peak current, 3.3V–16V input, PMBus interface, 3.5mm × 3.5mm QFN - higher current, wider VIN, digital control. | Targets server VRMs and high-power AI accelerators; not drop-in due to different pinout, control scheme, and thermal profile. | Select for digitally managed, multi-phase, >10A applications where telemetry and margining are required. |
| MP2315GJ-Z | 6A, 4.5V–26V input, 500kHz–2.2MHz fSW, 2mm × 3mm TSOT23-8 - smaller package, higher VIN, no PG or SYNC pins. | Suited for cost-sensitive industrial sensors and motor drives; lacks power-good signaling and light-load mode flexibility. | Choose for space-constrained, high-input-voltage applications where soft-start and fault reporting are secondary. |
Compared with TPS546B24RVFT and MP2315GJ-Z, the ISL8026AFRTAJZ-T offers superior thermal performance in its 3×3mm TQFN, precise ±1.5% reference accuracy over -40°C to +125°C, and dedicated PG/SS/SYNC pins for robust system-level power management - making it optimal for mid-power industrial and portable SoC rails.
Availability
ISL8026AFRTAJZ-T is available at Aetrix Electronics and suitable for DC/DC POL modules, μC/FPGA core power, and Li-ion battery powered devices requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for ISL8026AFRTAJZ-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, formed from the merger of Renesas Technology and NEC Electronics, is a global semiconductor leader delivering trusted embedded solutions for automotive, industrial, infrastructure, and IoT markets.
The ISL8026AFRTAJZ-T belongs to Renesas' high-efficiency monolithic buck regulator product line, designed specifically for compact, high-reliability point-of-load power delivery in thermally demanding industrial and portable applications.
FAQ
What is the maximum junction temperature rating for the ISL8026AFRTAJZ-T?
The ISL8026AFRTAJZ-T has a maximum junction temperature rating of +125°C, with thermal shutdown activated at 150°C and 25°C hysteresis. This allows reliable operation in extended industrial environments when mounted on a properly designed PCB with adequate copper pour and thermal vias under the exposed pad.
Does the ISL8026AFRTAJZ-T support external synchronization of its switching frequency?
Yes, the ISL8026AFRTAJZ-T supports external synchronization up to 4MHz via the SYNC pin, which accepts positive-edge-triggered clock signals. When configured for sync mode, the device disables its internal oscillator and locks to the external clock, enabling noise reduction in sensitive mixed-signal systems.
How does the soft-stop function operate during shutdown of the ISL8026AFRTAJZ-T?
During shutdown, the ISL8026AFRTAJZ-T activates an internal soft-stop switch that discharges the output capacitor through a controlled path, preventing voltage overshoot or latch-up in downstream circuitry. This feature is enabled automatically when EN is pulled low and requires no external components.
What is the purpose of the FS pin on the ISL8026AFRTAJZ-T, and how is it configured?
The FS pin on the ISL8026AFRTAJZ-T sets the switching frequency using an external resistor to GND. For the ISL8026AFRTAJZ-T (ISL8026A variant), connecting FS to VIN configures the default 2MHz operation. Resistor values from 42.2kΩ (4.2MHz) to 402kΩ (490kHz) allow precise frequency tuning to avoid EMI bands or optimize efficiency.
Can the ISL8026AFRTAJZ-T operate with a 0.8V output voltage, and what is the associated reference accuracy?
Yes, the ISL8026AFRTAJZ-T supports 0.8V output via external resistor divider on the FB pin, leveraging its 0.6V internal reference. Reference accuracy is ±1.5% over -40°C to +125°C, ensuring output tolerance remains within ±12mV at 0.8V across the full industrial temperature range.
ISL8026AFRTAJZ-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:
- 1MHz ~ 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
ISL8026AFRTAJZ-T FAQ
1.How can I place an order for ISL8026AFRTAJZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8026AFRTAJZ-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 ISL8026AFRTAJZ-T reliable?
The price and inventory of ISL8026AFRTAJZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8026AFRTAJZ-T is usually 5 days.
3.What payment methods are accepted for ISL8026AFRTAJZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8026AFRTAJZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8026AFRTAJZ-T?
ISL8026AFRTAJZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8026AFRTAJZ-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 ISL8026AFRTAJZ-T?
For technical support, including ISL8026AFRTAJZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8026AFRTAJZ-T requirements.
6.How does Aetrix verify that ISL8026AFRTAJZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8026AFRTAJZ-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 ISL8026AFRTAJZ-T meets industry standards.
7.What is the process for return or replacement of ISL8026AFRTAJZ-T?
All ISL8026AFRTAJZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8026AFRTAJZ-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 ISL8026AFRTAJZ-T part is unused and in its original packaging.
Return procedure for ISL8026AFRTAJZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL8026AFRTAJZ-T Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
