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Renesas ISL80019AIRZ-T
- Part No.:
- ISL80019AIRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-WFDFN Exposed Pad
- Datasheet:
-
ISL80019AIRZ-T.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,932
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Product details
Overview
ISL80019AIRZ-T from Renesas (formerly Intersil) is a monolithic synchronous buck DC/DC regulator delivering up to 1.5A continuous output current from a 2.7V–5.5V input, operating at 2MHz switching frequency with internal/external compensation options and selectable PFM/PWM light-load operation. It integrates low-rDS(ON) PMOS/NMOS FETs, eliminates boot capacitor requirement, and supports 100% duty cycle at 1MHz (not applicable at 2MHz).
For engineers reviewing the ISL80019AIRZ-T datasheet, ISL80019AIRZ-T pinout, ISL80019AIRZ-T application, or ISL80019AIRZ-T equivalent, key selection criteria include its 2MHz high-frequency operation enabling compact 1.0–3.3µH inductor use, ±0.5% feedback voltage accuracy (0.600V typ), integrated thermal/overcurrent/UVLO/OVP protections, and TDFN-8 (2mm×2mm) package with exposed thermal pad for industrial-grade thermal performance.
Technical Context
The ISL80019AIRZ-T employs peak current-mode control with slope compensation (900mV/Ts) for stable operation across wide duty cycles and fast transient response. Its architecture uses a PMOS high-side switch-eliminating boot capacitor dependency-and an NMOS low-side switch, enabling efficient synchronous rectification without external diode.
It supports dual operating modes: PWM for low-noise, fixed-frequency regulation under medium-to-heavy loads, and PFM for ultra-low quiescent current (35µA typ) during light loads. Protection features include cycle-by-cycle overcurrent limiting (2.5A typ), thermal shutdown at +150°C, and independent VOUT overvoltage (115% typ) and undervoltage (85% typ) detection via the FB pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5A continuous - sufficient for FPGA core rails, DDR termination, and low-power SoC domains. |
| Switching Frequency | 2MHz - enables use of sub-3.3µH inductors and <22µF ceramic output capacitors for space-constrained designs. |
| Feedback Voltage | 0.600V ±5mV - sets precise output voltage via resistor divider; supports 0.6V–5.5V adjustable VOUT. |
| Quiescent Current | 35µA (PFM mode, 2MHz) - extends battery life in always-on subsystems like sensor hubs or RTC power rails. |
| Input Voltage Range | 2.7V–5.5V - compatible with single-cell Li-ion (3.0–4.2V), USB 5V, and 3.3V/5V system rails. |
| Efficiency Peak | 95% - achieved at mid-load (e.g., 1.2V/1A, 3.3V input), minimizing thermal dissipation in sealed enclosures. |
| Protection Features | Overcurrent (2.5A typ), thermal shutdown (+150°C), UVLO (2.7V rising), OVP/UVP on FB - reduces need for external supervision ICs. |
Pinout & Package
ISL80019AIRZ-T is housed in an 8-pin 2mm×2mm TDFN package with exposed thermal pad (Pin 9, connected to PGND), optimized for high-power density and thermal reliability in space-limited applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Input power supply rail | Supplies both power stage and internal LDO bias; requires ≥10µF local ceramic decoupling. |
| EN (Pin 2) | Enable control input | Active-high logic (≥1.4V); pulls PHASE low via 100Ω when disabled for controlled output discharge. |
| MODE (Pin 3) | Operating mode select | Logic high = PWM (fixed 2MHz); logic low = PFM (variable frequency); internal 1MΩ pull-down prevents floating. |
| PG (Pin 4) | Power-good open-drain output | Asserts low during soft-start or if VOUT deviates >5% from regulation; includes 5MΩ internal pull-up. |
| COMP (Pin 5) | Error amplifier output | Tied to VIN for internal compensation (27pF/200kΩ network); external RC for custom loop tuning. |
| FB (Pin 6) | Feedback input | Monitors output via resistor divider; used by PG, UVLO, and OVP circuits - critical for stability and safety. |
| PGND (Pin 7) | Power and analog ground | Must connect directly to PCB ground plane; shares return path with PHASE and thermal pad. |
| PHASE (Pin 8) | Switching node | Connects to inductor; carries high di/dt switching current; discharged via 100Ω when disabled. |
Key Features
| Feature | Design Value |
|---|---|
| PMOS high-side switch | Eliminates boot capacitor requirement, reducing BOM count and layout complexity. |
| Selectably PFM/PWM operation | Enables dynamic efficiency optimization: PFM for µA-level idle current, PWM for EMI-sensitive systems. |
| Internal/external compensation | Default internal RC (27pF/200kΩ) simplifies design; external option allows fine-tuning for diverse output caps/inductors. |
| 100% duty cycle capability (1MHz version only) | Not applicable to ISL80019AIRZ-T (2MHz variant), but confirms family-level dropout robustness (200mV @2A in 1MHz parts). |
| Integrated protection suite | Single-chip solution for overcurrent, thermal, input UVLO, and output OVP/UVP - no external fault monitoring needed. |
Applications
| FPGA Core Power | USB-Powered Peripheral |
|---|---|
Use Scenario: Supplying 1.2V/1.5A to Xilinx Artix-7 or Intel MAX 10 FPGA core logic with tight ripple and fast load transient requirements. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing regulated core voltage; manages dynamic current steps up to 1A/µs. Use Value: 2MHz operation ensures <500ns response to load steps; 95% peak efficiency minimizes heat near FPGA die. |
Use Scenario: Powering a USB-C peripheral (e.g., docking station port controller) from 5V bus with strict inrush and thermal limits. IC Role / Device Role / Timing Role: Step-down converter generating 3.3V/1.2A rail; EN pin enables hot-plug sequencing with host controller. Use Value: PFM mode draws only 35µA at light load, meeting USB suspend current budgets; PG signal confirms rail readiness to host. |
| Industrial Sensor Node | Automotive Infotainment Display |
Use Scenario: Battery-backed environmental sensor node requiring 0.9V/1.0A for ultra-low-power MCU and ADC, operating over -40°C to +85°C. IC Role / Device Role / Timing Role: Main system regulator with thermal shutdown and wide-input tolerance; MODE pin tied low for PFM longevity. Use Value: 35µA quiescent current extends 10-year battery life; -40°C to +125°C junction rating ensures field reliability. |
Use Scenario: Generating 1.8V/1.5A for LCD timing controller in automotive cluster display, subject to load dumps and cold cranking. IC Role / Device Role / Timing Role: Secondary point-of-load regulator downstream of main 5V rail; withstands 5.5V max input during transients. Use Value: Integrated OVP/UVP protects display ICs during battery voltage excursions; exposed thermal pad sustains 1.5A continuously at +85°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL80019IRZ-T | Same 1.5A/1MHz architecture but lower switching frequency; higher minimum on-time (80ns vs 60ns at 2MHz). | Better suited for higher-VOUT (>2.5V) or lower-ripple applications where 1MHz allows larger, lower-ESR output caps. | Choose for cost-sensitive designs where 2MHz EMI sensitivity or board area is not critical. |
| TPS62864DRLR | 1.5A, 2.5V–5.5V input, 2.4MHz, 0.6V reference, but uses NMOS/NMOS topology requiring boot cap; smaller 1.5mm×2.0mm WSON. | Lacks integrated OVP/UVP; requires external resistive divider for feedback; tighter input range excludes 2.7V battery start-up. | Prefer when footprint is paramount and system-level supervision already exists; verify boot circuit compatibility. |
Compared with ISL80019IRZ-T, the ISL80019AIRZ-T delivers faster transient response and smaller magnetics due to 2MHz operation, while the TPS62864DRLR offers superior size reduction at the expense of added external components and reduced input flexibility.
Availability
ISL80019AIRZ-T is available at Aetrix Electronics and suitable for FPGA power, USB-powered peripherals, industrial sensor nodes, and automotive infotainment displays requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ISL80019AIRZ-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 acquired Intersil in 2017 and maintains full technical and manufacturing continuity for its precision analog and power management portfolio.
The ISL80019AIRZ-T belongs to Renesas' ISL800x family of compact synchronous buck regulators, designed specifically for space-constrained, high-efficiency point-of-load applications in portable, industrial, and automotive electronics.
FAQ
What is the maximum output current supported by the ISL80019AIRZ-T?
The ISL80019AIRZ-T supports up to 1.5A of continuous output current across its full operating temperature range (-40°C to +125°C junction), as confirmed in Table 1 of the FN7888 datasheet. This rating assumes proper PCB thermal design with ≥4 thermal vias under the exposed pad and adequate copper area for heat dissipation.
Does the ISL80019AIRZ-T require an external boot capacitor?
No, the ISL80019AIRZ-T does not require an external boot capacitor because it uses a PMOS high-side MOSFET. This architecture eliminates the need for charge-pump or bootstrap circuitry, reducing component count and simplifying layout - a key differentiator versus NMOS/NMOS synchronous buck controllers.
Can the ISL80019AIRZ-T operate at 100% duty cycle?
No, the ISL80019AIRZ-T (2MHz variant) does not support 100% duty cycle operation. That feature is explicitly documented only for the 1MHz versions (ISL80019 and ISL8002) in the datasheet's "100% Duty Cycle (1MHz Version)" section on page 18. The 2MHz variants prioritize high-frequency performance over dropout extension.
How is power-good (PG) functionality implemented on the ISL80019AIRZ-T?
The ISL80019AIRZ-T implements PG as an open-drain output (Pin 4) that remains low during soft-start and asserts high only when VOUT reaches and maintains regulation within ±5% of target (OVP threshold 115%, UVP 85%). It includes a 5MΩ internal pull-up and 15µs falling-edge delay, enabling reliable system power sequencing without external comparators.
What are the recommended external components for a typical 1.8V/1.5A application using the ISL80019AIRZ-T?
Per Table 2 in the FN7888 datasheet, a typical 1.8V/1.5A design uses: 22µF input capacitor (C1), two 22µF output capacitors (C5/C6), 1.2µH inductor (L1), and resistor divider R1=200kΩ/R2=100kΩ. Compensation defaults to internal (COMP tied to VIN); external RC is optional for custom loop shaping.
ISL80019AIRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-WFDFN 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:
- 1.5A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TDFN-EP (2x2)
ISL80019AIRZ-T FAQ
1.How can I place an order for ISL80019AIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL80019AIRZ-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 ISL80019AIRZ-T reliable?
The price and inventory of ISL80019AIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL80019AIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL80019AIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL80019AIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL80019AIRZ-T?
ISL80019AIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL80019AIRZ-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 ISL80019AIRZ-T?
For technical support, including ISL80019AIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL80019AIRZ-T requirements.
6.How does Aetrix verify that ISL80019AIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL80019AIRZ-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 ISL80019AIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL80019AIRZ-T?
All ISL80019AIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL80019AIRZ-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 ISL80019AIRZ-T part is unused and in its original packaging.
Return procedure for ISL80019AIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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