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Renesas ISL80020AIRZ-T7A
- Part No.:
- ISL80020AIRZ-T7A
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80020AIRZ-T7A.pdf
- Description:
- IC REG BUCK ADJ 2A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,012
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Product details
Overview
ISL80020AIRZ-T7A from Renesas (formerly Intersil) is a monolithic synchronous buck DC/DC converter delivering up to 2A continuous output current from a 2.7V–5.5V input, operating at 2MHz switching frequency with 0.6V feedback reference and integrated PMOS/NMOS power stage. It enables compact point-of-load regulation in space-constrained industrial and telecom systems.
For engineers reviewing the ISL80020AIRZ-T7A datasheet, ISL80020AIRZ-T7A pinout, ISL80020AIRZ-T7A application, or ISL80020AIRZ-T7A equivalent, key selection criteria include its 2MHz operation for small external inductors, 100% duty-cycle capability at 1MHz (not applicable here), thermal shutdown at +150°C, and integrated soft-start with 1ms ramp time.
Technical Context
The ISL80020AIRZ-T7A uses peak current-mode PWM control with internal slope compensation (900mV/Ts) and a transconductance error amplifier (40µA/V) clamped at 1.6V. Its architecture supports fast transient response and pulse-by-pulse overcurrent limiting via a 300mV/A current-sense gain.
It integrates low-rDS(ON) PMOS (117mΩ) and NMOS (86mΩ) switches, eliminating the need for an external boot capacitor. Protection includes overcurrent (trip at ~3.18A), short-circuit (VFB < 0.3V triggers 1/3-frequency mode), negative current detection (−1.5A valley over 2 cycles), thermal shutdown (+150°C), and UVLO (2.7V rising threshold).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.7V to 5.5V - supports single-cell Li-ion, USB, and 3.3V/5V rails without pre-regulation. |
| IOUT Max | 2A continuous - sufficient for FPGA I/O banks, DSP cores, and ASIC auxiliary rails. |
| fSW | 2MHz nominal - enables use of ≤1.2µH inductors and reduces output ripple without increasing board area. |
| VFB Reference | 0.600V ±6mV - sets output voltage via resistor divider; enables precise 0.8V–5.5V programmability. |
| Efficiency Peak | Up to 95% - achieved at mid-load with 3.3VIN/1.8VOUT, minimizing thermal load in sealed enclosures. |
| Thermal Shutdown | +150°C with +25°C hysteresis - ensures safe recovery after overload or poor airflow conditions. |
| Quiescent Current | 10–22mA at no load (2MHz) - balances light-load efficiency against startup speed and regulation stability. |
Pinout & Package
ISL80020AIRZ-T7A is housed in an 8-pin, 2mm × 2mm TDFN package with exposed thermal pad (EPAD), RoHS-compliant and moisture-sensitive level 2a (MSL2a). The EPAD must be soldered to PGND for electrical integrity and optimal thermal performance (θJA = 71°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply rail | Supplies both power stage and internal LDO bias; requires ≥10µF ceramic decoupling adjacent to pin. |
| EN | Enable control input | Active-high logic: device enables when >1.4V; pulls PHASE low via 100Ω during disable for controlled output discharge. |
| SGND | Signal ground reference | Must be connected directly to EPAD; separates analog sensing from high-current return paths. |
| PG | Power-good open-drain output | Asserts high-Z after 1ms soft-start if VOUT is within ±15% of target; pulled low on fault or during enable delay. |
| FB | Feedback node for voltage regulation | Connects to resistor divider midpoint; monitors output and feeds error amplifier; used by UV/OV protection circuits. |
| NC | No-connect terminal | Internally unconnected; must be tied to EPAD for mechanical stability and thermal conduction. |
| PGND | Power and analog ground return | Primary return path for inductor current and IC ground; requires low-impedance plane connection under EPAD. |
| PHASE | Switching node | Connects to inductor; carries high di/dt square wave; must be routed short and wide to minimize EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PMOS/NMOS power stage | Eliminates external boot capacitor and discrete MOSFET layout complexity; reduces BOM count by ≥3 components. |
| 2MHz fixed-frequency operation | Enables use of sub-2.2µH inductors (e.g., 1.2µH), cutting solution size by >30% vs. 1MHz alternatives. |
| Internal soft-start (1ms) | Prevents inrush current into downstream capacitance; avoids brownout on shared input rails during power-up. |
| Overcurrent & short-circuit protection | Detects >3.18A peak current and forces immediate P-FET turn-off; SCP reduces fSW to 1/3 during VFB < 0.3V events. |
| Thermal shutdown with hysteresis | Shuts down at +150°C and resumes only after cooling to +125°C, preventing thermal cycling damage during sustained overload. |
Applications
| Industrial PLC I/O Modules | Telecom Line Card Power |
|---|---|
Use Scenario: Regulating 1.8V/2A for FPGA configuration I/O banks in DIN-rail mounted controllers with limited PCB area and no forced airflow. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing stable, low-noise core voltage with fast load-step response to digital logic switching. Use Value: 2MHz operation allows 1.2µH inductor and 22µF output cap in <64mm² footprint; thermal pad ensures operation up to +85°C ambient without derating. | Use Scenario: Generating 3.3V/2A for Ethernet PHY and SerDes interfaces on carrier-grade line cards where EMI compliance and reliability are critical. IC Role / Device Role / Timing Role: High-efficiency POL converter with integrated protections, replacing multi-chip solutions requiring external MOSFET drivers and sense resistors. Use Value: 95% peak efficiency reduces heat dissipation; PG signal sequences power-up with MAC controller; EN pin enables hot-swap sequencing. |
| Medical Imaging Sensor Interface | Game Console SoC Auxiliary Rail |
Use Scenario: Supplying clean 1.2V/2A to CMOS image sensor ADC front-ends in portable ultrasound devices where low noise and rapid transient recovery are mandatory. IC Role / Device Role / Timing Role: Low-ripple DC/DC converter with tight line/load regulation (±0.28%/V, <−0.2%/A) and minimal output voltage deviation (<±5mV at 2A step). Use Value: Internal compensation and 2MHz fSW suppress switching artifacts near sensitive analog signal bands; soft-stop discharges output safely during sleep mode entry. | Use Scenario: Delivering 1.5V/2A to GPU voltage domains in handheld gaming platforms with aggressive thermal constraints and battery-life targets. IC Role / Device Role / Timing Role: Compact, high-efficiency buck converter supporting dynamic voltage scaling (DVS) via external EN control and FB resistor network reconfiguration. Use Value: 100% duty-cycle capability not supported (ISL80020A variant operates at 2MHz only), but 2A rating and 2MHz fSW enable fast DVS transitions with <1ms settling time. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL80020IRZ-T7A | Same package and pinout; 1MHz switching frequency instead of 2MHz; identical 2A rating and 0.6V VFB. | Better light-load efficiency at 1MHz; requires larger inductor (2.2µH vs. 1.2µH); slower transient response. | Select ISL80020IRZ-T7A when board area allows larger magnetics and lower EMI is prioritized over size reduction. |
| TPS62231DRYR | 2MHz, 2A, 2.05–6.5V input; 0.6V VFB; but uses NMOS/NMOS topology requiring external bootstrap capacitor. | Wider VIN range enables direct battery input; higher quiescent current (25µA shutdown vs. 1.2µA); no negative current protection. | Select TPS62231DRYR when input exceeds 5.5V or when TI's WEBENCH support and broader qualification data are required. |
Compared with ISL80020AIRZ-T7A, ISL80020IRZ-T7A trades switching frequency for improved light-load efficiency and relaxed EMI filtering, while TPS62231DRYR extends input voltage range at the cost of added external components and reduced protection features.
Availability
ISL80020AIRZ-T7A is available at Aetrix Electronics and suitable for industrial PLC I/O modules, telecom line card power, medical imaging sensor interfaces, and game console SoC auxiliary rails requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL80020AIRZ-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 acquired Intersil in 2017 and maintains full technical and supply chain responsibility for the ISL800xx family. Renesas is a global semiconductor leader focused on microcontrollers, analog, power, and connectivity solutions.
The ISL800xx series was designed specifically for compact, high-efficiency point-of-load regulation in space- and thermally-constrained applications such as industrial automation, telecom infrastructure, and portable medical equipment.
FAQ
What is the maximum output current capability of the ISL80020AIRZ-T7A?
The ISL80020AIRZ-T7A delivers up to 2A of continuous output current across its full operating temperature range (−40°C to +125°C junction), as confirmed in Table 1 of the FN6692 datasheet. This rating assumes proper thermal design with the EPAD soldered to a robust PGND plane and adequate copper area for heat dissipation. Derating begins above +85°C ambient depending on layout and airflow.
Does the ISL80020AIRZ-T7A support 100% duty cycle operation?
No, the ISL80020AIRZ-T7A does not support 100% duty cycle operation. That feature is explicitly specified only for the 1MHz variants (ISL80020 and ISL80015) per the datasheet summary table on page 2. The ISL80020AIRZ-T7A operates at 2MHz and uses a different control architecture that does not enable dropout-free regulation at VIN ≈ VOUT.
What is the purpose of the NC pin on the ISL80020AIRZ-T7A?
The NC (No Connect) pin on the ISL80020AIRZ-T7A is internally unconnected but must be electrically and thermally tied to the exposed pad (EPAD) as stated in the Pin Descriptions section (page 3). This connection ensures mechanical stability, improves thermal conduction from the die to the PCB ground plane, and prevents floating metal that could affect EMI performance or solder joint reliability.
How does the ISL80020AIRZ-T7A handle short-circuit conditions?
During a short-circuit event, the ISL80020AIRZ-T7A activates short-circuit protection (SCP) by monitoring the FB pin voltage. When VFB drops below 0.3V, the SCP comparator forces the switching frequency to drop to one-third of its normal value (≈667kHz), reducing power dissipation and limiting thermal stress. This behavior is distinct from overcurrent protection and is active during start-up or sustained short conditions.
Can the ISL80020AIRZ-T7A be used with ceramic output capacitors only?
Yes, the ISL80020AIRZ-T7A is fully compatible with ceramic output capacitors - in fact, it is optimized for them. Its current-mode control loop and internal compensation are designed for low-ESR ceramics (X5R/X7R dielectrics). The datasheet recommends 22µF ceramic capacitance and notes that electrolytic or polymer caps may be used only if additional ESR is needed for stability, which is unnecessary with proper ceramic selection and layout.
ISL80020AIRZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WFDFN 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):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 2A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80020AIRZ-T7A FAQ
1.How can I place an order for ISL80020AIRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80020AIRZ-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 ISL80020AIRZ-T7A reliable?
The price and inventory of ISL80020AIRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80020AIRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL80020AIRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80020AIRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80020AIRZ-T7A?
ISL80020AIRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80020AIRZ-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 ISL80020AIRZ-T7A?
For technical support, including ISL80020AIRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80020AIRZ-T7A requirements.
6.How does Aetrix verify that ISL80020AIRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL80020AIRZ-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 ISL80020AIRZ-T7A meets industry standards.
7.What is the process for return or replacement of ISL80020AIRZ-T7A?
All ISL80020AIRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL80020AIRZ-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 ISL80020AIRZ-T7A part is unused and in its original packaging.
Return procedure for ISL80020AIRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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