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Renesas ISL80015AIRZ-T
- Part No.:
- ISL80015AIRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80015AIRZ-T.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,806
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Product details
Overview
ISL80015AIRZ-T from Renesas (formerly Intersil) is a monolithic synchronous buck DC/DC converter delivering up to 1.5A 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 in an 8-pin 2mm×2mm TDFN package. It enables compact point-of-load regulation in space-constrained industrial and telecom systems.
For engineers reviewing the ISL80015AIRZ-T datasheet, ISL80015AIRZ-T pinout, ISL80015AIRZ-T application, or ISL80015AIRZ-T equivalent, key selection criteria include its 2MHz operation enabling small external inductors, 100% duty-cycle capability at 1MHz (not applicable to this A-version), integrated soft-start/soft-stop, and thermal shutdown with 25°C hysteresis - all verified in FN6692 Rev 3.00.
Technical Context
The ISL80015AIRZ-T employs peak current-mode PWM control with internal slope compensation (900mV/Ts) and a transconductance error amplifier (40µA/V) clamped at 1.6V max output. Its architecture supports fast transient response and pulse-by-pulse current limiting using a 300mV/A current-sense gain.
It integrates low-rDS(ON) PMOS (117mΩ) and NMOS (86mΩ) switches, eliminating the need for a boot capacitor. Protection includes overcurrent (2.1–2.9A trip), short-circuit (VFB < 0.3V triggers 1/3-frequency mode), negative current detection (−1.5A valley over 2 cycles), UVLO (2.2–2.7V), and thermal shutdown (150°C with 25°C hysteresis).
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 external regulators. |
| IOUT Max | 1.5A continuous - sufficient for FPGA I/O banks, microcontroller cores, and sensor signal chains. |
| fSW | 2MHz nominal - enables use of ≤2.2µH inductors and reduces output ripple without increasing EMI filtering burden. |
| VFB Reference | 0.600V ±6mV - sets output voltage via resistor divider; allows precise 0.8V–5.5V programmability with minimal external components. |
| Efficiency Peak | Up to 95% - achieved at mid-load with 3.3VIN/1.8VOUT, minimizing thermal stress in sealed enclosures. |
| Thermal Shutdown | 150°C with 25°C hysteresis - prevents latch-up during sustained overload while enabling automatic recovery after cooling. |
| Quiescent Current | 10–22mA at 2MHz no-load - balances light-load efficiency against startup speed and control-loop stability. |
Pinout & Package
ISL80015AIRZ-T is housed in an RoHS-compliant 8-pin 2mm×2mm TDFN package with exposed thermal pad (EPAD) connected to PGND. The package occupies <64mm² PCB area and requires ≥4 vias under EPAD for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input power supply rail | Supplies both power stage and internal LDO; requires ≥10µF ceramic decoupling placed adjacent to pin. |
| EN | Enable control input | Active-high logic (1.4V threshold); pulls PHASE low via 100Ω when disabled to discharge output. |
| SGND | Signal ground reference | Must be tied directly to EPAD; separates analog sensing from high-current return paths. |
| PG | Power-good open-drain output | Indicates regulation status with 5MΩ internal pull-up; asserts low during soft-start or if VFB deviates >15% from 0.6V. |
| FB | Feedback node for voltage loop | Connects to resistor divider; monitors output and feeds error amplifier; leakage ±350nA affects high-resistor designs. |
| NC | No-connect terminal | Internally unconnected; must be tied to EPAD per datasheet for mechanical stability and thermal conduction. |
| PGND | Power and analog ground | Primary return path for inductor current and IC ground; requires direct connection to board GND plane. |
| PHASE | Switching node | Connects to inductor; carries high di/dt; discharges via 100Ω when disabled to prevent output hold-up. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated PMOS/NMOS power stage | Eliminates external boot capacitor and reduces BOM count by two components versus controllers. |
| 2MHz fixed-frequency operation | Enables 1.0–2.2µH inductors, cutting solution size by ~40% vs 1MHz variants while maintaining <10mV ripple. |
| Internal soft-start and soft-stop | 1ms controlled ramp-up prevents inrush current; discharge path via 100Ω limits output droop during shutdown. |
| Comprehensive protection suite | Includes OCP, SCP, negative current, UVLO, OV/UV on PG, and thermal shutdown - reduces need for external fault management. |
| 0.6V precision feedback reference | Supports accurate low-voltage outputs (e.g., 0.8V, 1.2V) with standard 1% resistors; minimizes divider current error. |
Applications
| Industrial PLC I/O Modules | Medical Patient Monitoring Sensors |
|---|---|
Use Scenario: Regulating 1.8V for isolated ADC front-ends and digital isolators in DIN-rail mounted controllers. IC Role / Device Role / Timing Role: Primary point-of-load converter supplying noise-sensitive analog circuitry with tight load regulation (<±0.2%/A). Use Value: 2MHz operation avoids interference with 1kHz–10kHz sensor sampling clocks; 95% efficiency reduces heat in thermally constrained enclosures. | Use Scenario: Powering low-noise op-amps and SAR ADCs in portable ECG/SpO₂ units powered by single-cell Li-ion. IC Role / Device Role / Timing Role: Compact, high-efficiency buck regulator replacing linear regulators to extend battery life without compromising signal integrity. Use Value: Integrated soft-start prevents ECG baseline shift during power-on; thermal shutdown protects against overheating in skin-contact devices. |
| Telecom Small-Cell Baseband | Gaming Console SoC I/O Rails |
Use Scenario: Generating 3.3V for FPGAs and SerDes transceivers in LTE/5G remote radio units with strict EMI limits. IC Role / Device Role / Timing Role: High-frequency POL converter minimizing conducted emissions through controlled edge rates and small passive footprint. Use Value: 2MHz switching moves fundamental noise above critical 1–2GHz RF bands; 8-pin TDFN eases layout near RF sections. | Use Scenario: Supplying configurable 1.2V–1.5V I/O voltage to GPU memory interfaces during dynamic voltage scaling. IC Role / Device Role / Timing Role: Fast-transient buck regulator responding to 10A/µs load steps with <1% output deviation. Use Value: Peak current-mode control delivers sub-10µs recovery from 0→1.5A steps; PG signal synchronizes voltage rail sequencing with SoC reset. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL80015IRZ-T | 1MHz switching frequency; identical 1.5A rating, VIN range, and package. | Better light-load efficiency; larger inductor required (2.2µH vs 1.2µH); slower transient response. | Select when EMI sensitivity outweighs size constraints or when lower quiescent current (7–15mA) is prioritized. |
| TPS62130ARGTR | 1.2–5.5V input; 3A output; 2.5MHz switching; different pinout and enable polarity (active-low). | Higher current headroom; requires layout revision; lacks integrated negative current protection. | Choose for future-proofing with higher load margin or when TI's WEBENCH support is preferred for design validation. |
Compared with ISL80015IRZ-T, the ISL80015AIRZ-T trades slightly higher no-load current for 2× faster switching, enabling smaller passives and improved transient immunity; versus TPS62130ARGTR, it offers tighter thermal protection hysteresis and simpler enable interface but lower output current capability.
Availability
ISL80015AIRZ-T is available at Aetrix Electronics and suitable for industrial PLCs, medical sensor modules, telecom small cells, and gaming console power delivery requiring stable component supply across extended temperature ranges (−40°C to +125°C).
Supply support for ISL80015AIRZ-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 acquired Intersil in 2017 and maintains its high-performance analog and power management portfolio. Renesas is a global semiconductor leader focused on embedded solutions for automotive, industrial, and IoT markets.
The ISL80015AIRZ-T belongs to Renesas' ISL800xx family of compact synchronous buck converters, designed specifically for space-constrained, high-efficiency point-of-load applications in battery-powered and thermally demanding environments.
FAQ
What is the maximum output current supported by the ISL80015AIRZ-T?
The ISL80015AIRZ-T delivers up to 1.5A of continuous output current across the full operating temperature range (−40°C to +125°C), as confirmed in Table 1 of FN6692 Rev 3.00. This rating assumes proper thermal management via the exposed pad and adequate PCB copper area. Peak current limit is 2.1–2.9A depending on input voltage, providing short-term overload tolerance without immediate shutdown.
Does the ISL80015AIRZ-T require an external boot capacitor?
No, the ISL80015AIRZ-T does not require an external boot capacitor because it integrates a PMOS high-side switch. This eliminates the need for charge-pump circuitry and associated external components, reducing BOM count and PCB area. The architecture is explicitly documented in the datasheet's "Features" section and functional block diagram on page 4.
What is the feedback reference voltage of the ISL80015AIRZ-T and how is output voltage set?
The ISL80015AIRZ-T uses a precision 0.600V ±6mV internal feedback reference voltage (VFB). Output voltage is set using an external resistor divider connected between VOUT, FB, and GND, calculated via R1 = R2 × (VOUT / 0.6 − 1). Equation 5 on page 13 of FN6692 confirms this relationship, and typical values (e.g., 200kΩ/100kΩ for 1.8V) are validated in Figure 1.
How does the ISL80015AIRZ-T handle thermal overload conditions?
The ISL80015AIRZ-T activates thermal shutdown at +150°C junction temperature and remains latched off until the die cools to +125°C (25°C hysteresis), as specified in the Electrical Specifications table on page 6. Upon recovery, it executes a full 1ms soft-start sequence before resuming regulation. This behavior is detailed in the "Thermal Shutdown" subsection of the Theory of Operation section (page 12).
Can the ISL80015AIRZ-T operate at 100% duty cycle?
No, the ISL80015AIRZ-T is rated for 2MHz operation and does not support 100% duty cycle. That feature is explicitly reserved for the non-A variants (ISL80015/ISL80020) operating at 1MHz, as stated in the first paragraph of the datasheet and Table 1. Attempting 100% duty cycle at 2MHz would violate the device's timing architecture and is not characterized or guaranteed.
ISL80015AIRZ-T 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:
- 1.5A
- 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)
ISL80015AIRZ-T FAQ
1.How can I place an order for ISL80015AIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80015AIRZ-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 ISL80015AIRZ-T reliable?
The price and inventory of ISL80015AIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80015AIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL80015AIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80015AIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80015AIRZ-T?
ISL80015AIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80015AIRZ-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 ISL80015AIRZ-T?
For technical support, including ISL80015AIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80015AIRZ-T requirements.
6.How does Aetrix verify that ISL80015AIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL80015AIRZ-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 ISL80015AIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL80015AIRZ-T?
All ISL80015AIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL80015AIRZ-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 ISL80015AIRZ-T part is unused and in its original packaging.
Return procedure for ISL80015AIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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