My Inquiry
My Account
Renesas ISL8025IRTAJZ-T
- Part No.:
- ISL8025IRTAJZ-T
- Manufacturer:
- Renesas
- Package:
- 16-WFQFN Exposed Pad
- Datasheet:
-
ISL8025IRTAJZ-T.pdf
- Description:
- IC REG BUCK ADJ 5A 16TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:10,123
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL8025IRTAJZ-T from Renesas Electronics is a monolithic synchronous buck DC/DC regulator delivering 5A continuous output current from 2.7V–5.5V input, featuring 36mΩ P-channel and 13mΩ N-channel integrated MOSFETs, 1MHz default switching frequency, and 0.6V reference voltage with 0.8% accuracy over temperature/load/line. It enables compact point-of-load power for FPGA core rails in space-constrained embedded systems.
For engineers reviewing the ISL8025IRTAJZ-T datasheet, ISL8025IRTAJZ-T pinout, ISL8025IRTAJZ-T application, or ISL8025IRTAJZ-T equivalent, key selection criteria include its 100% duty-cycle capability (≤180mV dropout at 5A), internal/external compensation flexibility, hiccup-mode overcurrent protection, soft-stop output discharge, and compatibility with 3×3 mm QFN thermal design requirements.
Technical Context
The ISL8025IRTAJZ-T employs current-mode control architecture to ensure fast transient response and stable loop behavior across 500kHz–4MHz programmable switching frequencies. Its dual-MOSFET integration-P-channel high-side (36mΩ typ.) and N-channel low-side (13mΩ typ.)-minimizes conduction loss and eliminates external driver components.
Operation supports both forced continuous conduction mode (reducing EMI) and discontinuous mode (improving light-load efficiency), with configurable soft-start (1ms fixed or adjustable), power-good monitoring with 1ms delay, and comprehensive fault protection including overtemperature (150°C trip), overvoltage, negative overcurrent (−3A typ.), and hiccup-mode short-circuit limiting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 5A continuous - supports high-current FPGA, µP, and DSP core rails without external current boosting. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and intermediate bus architectures. |
| Default Switching Frequency | 1MHz - balances efficiency and component size; adjustable from 500kHz to 4MHz via FS pin resistor. |
| Reference Voltage Accuracy | ±0.8% over temperature/load/line - ensures tight output regulation for sensitive digital loads like ARM cores. |
| ON-Resistance (HS/LG) | 36mΩ / 13mΩ typical - reduces conduction loss and improves full-load efficiency up to 95%. |
| Duty Cycle Range | 0–100% - enables ultra-low dropout operation (e.g., 1.8VOUT from 2.0V input) in battery-depleted conditions. |
| Thermal Package | 16-lead 3×3 mm TQFN with exposed pad - achieves θJA = 47°C/W for high-power density PCB layouts. |
Pinout & Package
ISL8025IRTAJZ-T is housed in a RoHS-compliant, Pb-free 16-lead 3×3 mm TQFN package with exposed thermal pad (PKG DWG L16.3x3D), optimized for low-inductance layout and efficient heat transfer to SGND plane via multiple vias.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1,16) | Input supply rail | Primary power input; requires ≥2×22µF ceramic decoupling close to pins for stability under 5A transients. |
| PHASE (13–15) | Switching node | Connects directly to inductor; carries high di/dt; internal 100Ω discharge path during shutdown. |
| PGND (11,12) | Power ground return | Low-impedance return path for high-side and low-side FET currents; separate from SGND. |
| SGND (10) | Signal ground reference | Analog reference for FB, COMP, SS; must be connected to exposed pad and isolated from PGND at single point. |
| FB (8) | Feedback input | Senses output voltage via resistor divider; sets VOUT = 0.6V × (1 + R2/R3); monitors PG and UVLO. |
| COMP (9) | Error amplifier output | Internal compensation node; connect to VDD for standard config; external network required for custom loop tuning. |
| EN (5) | Enable control | Active-high logic input; pulls output capacitor to SGND via internal soft-stop switch when disabled. |
| PG (3) | Power-good indicator | Open-drain output with 1ms delay after regulation; requires external pull-up to VIN for system sequencing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | 36mΩ P-ch HS + 13mΩ N-ch LS - eliminates external drivers and reduces BOM count by ≥4 components. |
| 100% Duty-Cycle Operation | Enables ≤180mV dropout at 5A - critical for maintaining core voltage during Li-ion battery sag below 3.0V. |
| Configurable Light-Load Mode | PFM (high efficiency) or forced CCM (low noise) - selectable via SYNC pin for mixed-signal system optimization. |
| Robust Fault Protection | Hiccup OCP, −3A negative current limit, 150°C thermal shutdown, OV/UV lockout - prevents damage during faults without external circuitry. |
| Flexible Compensation | Internal (COMP-to-VDD) or external (COMP-to-SGND network) - simplifies design for standard apps or enables fine-tuned loop response. |
Applications
| DC/DC POL Modules | µC/µP and FPGA Core Power |
|---|---|
|
Use Scenario: Compact, board-mounted DC/DC modules supplying 1.2V–3.3V at up to 5A to ASICs and SoCs in telecom line cards. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing regulated core voltage with fast load-step response. Use Value: 95% peak efficiency and 3×3 mm footprint enable <0.22 in² total solution area - ideal for dense module designs. |
Use Scenario: Powering ARM Cortex-A series processors and Xilinx Artix-7 FPGAs requiring tightly regulated 1.0V–1.8V rails. IC Role / Device Role / Timing Role: Point-of-load regulator with ±0.8% reference accuracy and 1ms PG delay for safe processor boot sequencing. Use Value: 0.6V reference and precision FB sensing ensure <±15mV output deviation across temp/load - meets core voltage tolerance specs. |
| Portable Test Instruments | Li-ion Battery-Powered Devices |
|
Use Scenario: Handheld oscilloscopes and multimeters needing low-noise, high-efficiency 3.3V/5A analog and digital supplies. IC Role / Device Role / Timing Role: Dual-mode regulator operating in forced CCM to suppress RF interference in sensitive measurement front-ends. Use Value: SYNC-controlled PFM/CCM mode selection allows dynamic trade-off between 20µA quiescent current (PFM) and <10mVpp ripple (CCM). |
Use Scenario: Medical wearables and ruggedized tablets powered by single-cell Li-ion batteries (2.7–4.2V). IC Role / Device Role / Timing Role: Input-wide buck converter supporting full battery voltage range with 100% duty cycle for extended runtime. Use Value: ≤180mV dropout at 5A maintains 1.8V output even at 2.8V battery voltage - extends usable battery capacity by >12%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL8023IRAJZ-T | 3A output rating, same 3×3 QFN package and pinout, 1MHz default frequency, but lacks SYNC pin and PFM mode. | Not suitable for 5A loads or noise-sensitive PFM operation; limited to simpler, lower-current POL use cases. | Select only when 3A max current suffices and system-level EMI constraints allow fixed PWM-only operation. |
| TPS54560BQPWPRQ1 | 6A output, wider 3.5–60V input, external MOSFETs, no integrated FETs; requires additional gate drivers and discrete power stage. | Designed for automotive 12V/24V systems, not low-voltage battery apps; larger solution size and higher BOM cost. | Choose only for high-input-voltage industrial applications where ISL8025IRTAJZ-T's 5.5V VIN limit is insufficient. |
Compared with ISL8025IRTAJZ-T, ISL8023IRAJZ-T offers identical footprint and control interface but reduced current capability, while TPS54560BQPWPRQ1 provides higher voltage range and current but demands external power stage design effort and sacrifices integration benefits.
Availability
ISL8025IRTAJZ-T is available at Aetrix Electronics and suitable for DC/DC POL modules, µC/FPGA core power, and portable test instrumentation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8025IRTAJZ-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 is a global semiconductor leader specializing in microcontrollers, analog power management, and timing solutions for automotive, industrial, and infrastructure markets.
The ISL8025 product line delivers highly integrated, thermally optimized synchronous buck regulators targeting space-constrained, high-efficiency point-of-load applications in portable and embedded systems.
FAQ
What is the maximum continuous output current supported by the ISL8025IRTAJZ-T?
The ISL8025IRTAJZ-T supports 5A of continuous output current across its full operating temperature range (−40°C to +85°C) when properly heatsinked on a 4-layer PCB with thermal vias to SGND. This rating assumes 2.7V–5.5V input, 1MHz switching, and adequate output capacitance per the datasheet recommendations.
Does the ISL8025IRTAJZ-T support external synchronization of its switching frequency?
Yes, the ISL8025IRTAJZ-T supports external synchronization up to 4MHz via the SYNC pin. When driven with a clean CMOS clock signal, the device locks its internal oscillator to the external source, enabling deterministic EMI reduction and multi-rail phase alignment in complex power systems.
How does the soft-stop function operate during shutdown of the ISL8025IRTAJZ-T?
When the EN pin is pulled low, the ISL8025IRTAJZ-T activates an internal soft-stop switch that discharges the output capacitor through a controlled path, preventing voltage overshoot or reverse current flow into the load. This ensures safe, sequenced power-down in systems with multiple dependent rails.
What is the purpose of the PHASE pin on the ISL8025IRTAJZ-T, and how should it be routed?
The PHASE pin on the ISL8025IRTAJZ-T is the high-current switching node connecting to the inductor's input terminal. It must be routed with minimal trace length and width ≥15 mils to reduce parasitic inductance and EMI. The internal 100Ω discharge path activates during shutdown, so routing must avoid coupling to sensitive analog traces.
Can the ISL8025IRTAJZ-T operate with a 0.8V output voltage, and what is the minimum achievable output?
Yes, the ISL8025IRTAJZ-T can regulate down to 0.6V - its internal reference voltage - making 0.8V fully supported. Output is set by the FB resistor divider: VOUT = 0.6V × (1 + R2/R3). For 0.8V, a common configuration uses R2 = 33kΩ and R3 = 100kΩ, verified in Table 2 of the datasheet.
ISL8025IRTAJZ-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):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 5A
- Frequency - Switching:
- 1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-TQFN (3x3)
ISL8025IRTAJZ-T FAQ
1.How can I place an order for ISL8025IRTAJZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8025IRTAJZ-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 ISL8025IRTAJZ-T reliable?
The price and inventory of ISL8025IRTAJZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8025IRTAJZ-T is usually 5 days.
3.What payment methods are accepted for ISL8025IRTAJZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8025IRTAJZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8025IRTAJZ-T?
ISL8025IRTAJZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8025IRTAJZ-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 ISL8025IRTAJZ-T?
For technical support, including ISL8025IRTAJZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8025IRTAJZ-T requirements.
6.How does Aetrix verify that ISL8025IRTAJZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8025IRTAJZ-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 ISL8025IRTAJZ-T meets industry standards.
7.What is the process for return or replacement of ISL8025IRTAJZ-T?
All ISL8025IRTAJZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8025IRTAJZ-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 ISL8025IRTAJZ-T part is unused and in its original packaging.
Return procedure for ISL8025IRTAJZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL8025IRTAJZ-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…
