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Renesas ISL8009AIRZ-T
- Part No.:
- ISL8009AIRZ-T
- Manufacturer:
- Renesas
- Package:
- 8-VFDFN Exposed Pad
- Datasheet:
-
ISL8009AIRZ-T.pdf
- Description:
- IC REG BUCK ADJ 1.5A 8DFN
- Quantity:
- Payment:
- Shipping:
Inventory:9,745
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Product details
Overview
ISL8009AIRZ-T from Intersil is a monolithic synchronous buck regulator delivering up to 1.5A continuous output current with 0.8V minimum output voltage, 1.6MHz switching frequency, and 17µA quiescent current in PFM mode-designed for portable instrumentation and µP/FPGA point-of-load power.
For engineers reviewing the ISL8009AIRZ-T datasheet, ISL8009AIRZ-T pinout, ISL8009AIRZ-T application, or ISL8009AIRZ-T equivalent, this page delivers verified electrical specs, validated DFN-8 pin functions, confirmed thermal shutdown at 140°C, and real-world efficiency curves across 2.7–5.5V input and 0–1.5A load.
Technical Context
The ISL8009AIRZ-T employs current-mode PWM control with internal slope compensation for fast transient response and stable loop behavior across 0–1.5A loads. Its dual MOSFET architecture integrates 120mΩ P-Channel and 110mΩ N-Channel switches, enabling 95% peak efficiency and <400mV dropout at full load.
Operation supports selectable forced PWM or automatic PFM/PWM mode via the SKIP pin, with 2ms POR timer, soft-start, and RSI-controlled reset. Thermal shutdown activates at 140°C with 25°C hysteresis, and the device enters 100% duty-cycle mode below input UVLO (2.5V rising).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 1.5A continuous-supports FPGA core rails and microcontroller I/O domains without external current boosting. |
| Input Voltage Range | 2.7V to 5.5V-compatible with single Li+ cell, three NiMH cells, or regulated 5V supplies. |
| Switching Frequency | 1.6MHz typical-enables use of compact 2.2µH inductors and 20µF ceramic output capacitors. |
| Quiescent Current | 17µA in PFM mode-extends battery runtime in always-on sensor nodes and portable test equipment. |
| Feedback Reference | 0.8V ±2%-sets output voltage via external resistor divider; enables 0.8V–3.6V adjustable regulation. |
| Duty Cycle Max | 90%-ensures <400mV dropout at 1.5A, critical for low-VIN battery brownout operation. |
| Thermal Shutdown | 140°C activation with 25°C hysteresis-prevents permanent damage during sustained overload or poor PCB heatsinking. |
Pinout & Package
ISL8009AIRZ-T is housed in an 8-lead 2mm × 3mm DFN package (L8.2x3) with exposed thermal pad requiring direct connection to GND for electrical integrity and thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Input supply rail | Accepts 2.7–5.5V; requires 10µF ceramic decoupling capacitor to GND for EMI suppression and transient stability. |
| EN | Enable control input | Active-high logic; enables regulation when pulled ≥1.4V, discharges output via 100Ω internal resistor when low. |
| POR | Power-On-Reset output | Open-drain 2ms delayed Power-Good signal; resets on RSI low pulse and asserts only when VFB is within ±3% of 0.8V. |
| SKIP | Mode selection input | High = PFM/PWM auto-switching (17µA IQ); low = forced PWM (fixed 1.6MHz), essential for noise-sensitive analog subsystems. |
| LX | Switch node | Connects to inductor; carries high di/dt switching current-requires short, low-inductance trace to minimize ringing and EMI. |
| GND | System ground reference | Primary return path for power and signal; must be tied to exposed pad for thermal and electrical performance. |
| VFB | Feedback input | Senses output voltage via resistor divider; 0.1µA bias current limits max divider resistance to 200kΩ for accuracy. |
| RSI | Reset inhibit input | Active-low asynchronous reset for POR timer; pulls POR low immediately and restarts timing when released. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated MOSFETs | P-Channel (120mΩ) + N-Channel (110mΩ) switches eliminate external FETs and gate drivers, reducing BOM count and layout area. |
| Current-mode control | Internal slope compensation ensures stable operation across all duty cycles and load conditions without external compensation components. |
| Digital soft-start | 1.1ms controlled ramp prevents inrush current and output overshoot during power-up, protecting downstream logic and analog circuits. |
| Overcurrent protection | Peak current limit set at 2.1A (typical) with cycle-by-cycle shutdown-prevents MOSFET failure during short-circuit or startup faults. |
| Soft discharge | 100Ω internal resistor between LX and GND actively discharges output capacitor on shutdown, preventing floating or back-powering issues. |
Applications
| Portable Instrumentation | µC/µP Core Power |
|---|---|
Use Scenario: Handheld multimeters and portable oscilloscopes requiring stable 1.2V/1.5A rails from single-cell Li+ batteries. IC Role / Device Role / Timing Role: Primary DC/DC POL regulator converting 3.3V battery output to low-noise digital core voltage. Use Value: 17µA quiescent current extends battery life >2× versus fixed-frequency alternatives; 1.6MHz operation minimizes inductor size for compact form factor. |
Use Scenario: Powering ARM Cortex-M4 microcontrollers in industrial edge nodes with tight thermal constraints. IC Role / Device Role / Timing Role: Synchronous buck converter supplying configurable core voltage (0.8–1.3V) with precise 3% output accuracy over temperature. Use Value: 90% maximum duty cycle maintains regulation down to 2.8V input, ensuring uninterrupted operation during battery discharge. |
| FPGA I/O Bank Supply | DC/DC POL Modules |
Use Scenario: Providing 1.8V/1.5A to FPGA I/O banks in plug-in router modules where board space is constrained. IC Role / Device Role / Timing Role: High-efficiency step-down regulator with integrated MOSFETs and minimal external components. Use Value: 2mm × 3mm DFN package occupies <1cm² total area; 95% peak efficiency reduces thermal load in dense multi-rail systems. |
Use Scenario: Embedded DC/DC module designs requiring drop-in, RoHS-compliant regulators with proven reliability. IC Role / Device Role / Timing Role: Monolithic buck IC used as the power stage in compact, shielded POL modules for telecom and networking equipment. Use Value: Built-in thermal shutdown, overcurrent protection, and soft-start eliminate need for discrete protection circuitry-accelerating time-to-market. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62130ARGTR | 3.0V–17V input range; 3A output; 2.5MHz switching; no integrated POR or RSI functionality. | Better suited for wide-input industrial systems; lacks dedicated reset coordination for sequenced power-up. | Select when higher input voltage or output current is required; verify external sequencing circuitry replaces ISL8009AIRZ-T's integrated RSI/POR. |
| MP2143GJ-Z | 2.5V–5.5V input; 1.5A output; 1.5MHz switching; no PFM mode-fixed PWM only; 25µA quiescent current. | Lower light-load efficiency due to absence of PFM; simpler control interface but no skip-mode flexibility. | Choose for cost-sensitive designs where ultra-low IQ is noncritical and fixed-frequency EMI profile is preferred. |
Compared with TPS62130ARGTR and MP2143GJ-Z, the ISL8009AIRZ-T uniquely combines 17µA PFM quiescent current, integrated 2ms POR with RSI reset, and 90% duty cycle for low-dropout operation-making it optimal for battery-powered portable instruments and tightly sequenced µP/FPGA systems.
Availability
ISL8009AIRZ-T is available at Aetrix Electronics and suitable for portable instrumentation, µC/µP core power, FPGA I/O bank supply, and DC/DC POL modules requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL8009AIRZ-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
Intersil (now part of Renesas Electronics) is a semiconductor manufacturer specializing in high-performance analog and power management ICs for industrial, computing, and communications markets.
The ISL8009A product line was designed specifically for low-voltage, high-efficiency point-of-load conversion in space-constrained portable and battery-powered systems-emphasizing ultra-low quiescent current, small footprint, and robust protection features.
FAQ
What is the maximum output current capability of the ISL8009AIRZ-T?
The ISL8009AIRZ-T delivers up to 1.5A continuous output current under recommended operating conditions (TA = –40°C to +85°C, VIN = 2.7V–5.5V). This rating is guaranteed across temperature and line/load variations, supported by internal peak current limiting at 2.1A and thermal shutdown at 140°C to prevent damage during overload events.
Does the ISL8009AIRZ-T support adjustable output voltage?
Yes, the ISL8009AIRZ-T supports adjustable output voltage from 0.8V to 3.6V using an external resistor divider connected to the VFB pin. The internal 0.8V reference has ±2% accuracy over temperature and load, and VFB bias current is limited to 0.1µA-requiring R3 ≤200kΩ to maintain output accuracy per the datasheet design guidelines.
How does the SKIP pin affect ISL8009AIRZ-T operation?
The SKIP pin selects between forced PWM mode (pin low) and automatic PFM/PWM mode (pin high). In PFM mode, quiescent current drops to 17µA at light load, maximizing battery life; in forced PWM mode, switching remains fixed at 1.6MHz-reducing output ripple and simplifying EMI filtering for noise-sensitive analog circuits.
What thermal management requirements apply to the ISL8009AIRZ-T?
The ISL8009AIRZ-T requires connection of its exposed thermal pad directly to a solid GND plane with ≥5 thermal vias for effective heat dissipation. With θJA = 55°C/W and θJC = 5.5°C/W, maintaining junction temperature below 125°C demands adequate copper area-especially at 1.5A output under worst-case ambient and input conditions.
Is the ISL8009AIRZ-T RoHS compliant and lead-free?
Yes, the ISL8009AIRZ-T is Pb-free and RoHS compliant per Intersil's specification (ordering info notes Pb-free material sets, 100% matte tin plating, and JEDEC J-STD-020 reflow compatibility). The "RZ" suffix in the part number explicitly denotes RoHS-compliant packaging, and the device meets IPC/JEDEC moisture sensitivity level (MSL) requirements for surface-mount assembly.
ISL8009AIRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-VFDFN 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):
- 0.8V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 1.5A
- Frequency - Switching:
- 1.6MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-DFN (2x3)
ISL8009AIRZ-T FAQ
1.How can I place an order for ISL8009AIRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL8009AIRZ-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 ISL8009AIRZ-T reliable?
The price and inventory of ISL8009AIRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL8009AIRZ-T is usually 5 days.
3.What payment methods are accepted for ISL8009AIRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL8009AIRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL8009AIRZ-T?
ISL8009AIRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL8009AIRZ-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 ISL8009AIRZ-T?
For technical support, including ISL8009AIRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL8009AIRZ-T requirements.
6.How does Aetrix verify that ISL8009AIRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL8009AIRZ-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 ISL8009AIRZ-T meets industry standards.
7.What is the process for return or replacement of ISL8009AIRZ-T?
All ISL8009AIRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL8009AIRZ-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 ISL8009AIRZ-T part is unused and in its original packaging.
Return procedure for ISL8009AIRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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